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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4768758422001/metamorphic-rocks</loc>
  <lastmod>2025-06-30T03:38:42.968Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/e24ea93b-11b2-4801-a0a1-e657cb294e84/4d9d4488-ba93-48a5-863c-c2dfcd58a119/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Metamorphic Rocks
    </video:title>
    <video:description>
      CPS2009NVa
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4768758422001
    </video:player_loc>
    <video:duration>
      246
    </video:duration>
    <video:publication_date>
      2016-02-23T04:29:19.407Z
    </video:publication_date>
    <video:category>
      Earth Science Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4768875328001/silica-enrichment</loc>
  <lastmod>2025-06-30T03:32:02.161Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/aa37d575-8d89-4905-aa2f-d1944a41b0e0/326a3de5-b518-47ca-955e-f66534f3a17c/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Silica Enrichment
    </video:title>
    <video:description>
      CPS2005NVa
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4768875328001
    </video:player_loc>
    <video:duration>
      328
    </video:duration>
    <video:publication_date>
      2016-02-23T04:08:17.705Z
    </video:publication_date>
    <video:category>
      Earth Science Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4768997904001/tectonic-rock-cycle</loc>
  <lastmod>2025-06-30T03:57:16.507Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/89f5c288-fdc3-4e76-90f1-457ad6caa7e4/8705acec-2118-42aa-97fb-3cfbc4680b5f/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Tectonic Rock Cycle
    </video:title>
    <video:description>
      CPS2107NVa
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4768997904001
    </video:player_loc>
    <video:duration>
      165
    </video:duration>
    <video:publication_date>
      2016-02-23T04:41:42.242Z
    </video:publication_date>
    <video:category>
      Earth Science Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2722279748001/part-a:-an-introduction-to-our-sun</loc>
  <lastmod>2023-06-13T22:17:12.810Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/858df13d-e2a3-4b96-9223-bd868aec8747/9617355a-4d39-42a2-bc4b-2b9bbc54ab26/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Part A: An Introduction to our Sun
    </video:title>
    <video:description>
      How the Sun rotates and generates much activity at its surface, such as solar flares and coronal mass ejections,  are explored. Duration: 6:38.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2722279748001
    </video:player_loc>
    <video:duration>
      399
    </video:duration>
    <video:publication_date>
      2013-10-06T01:06:54.988Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2717953930001/part-a:-a-quick-tour-of-the-planets</loc>
  <lastmod>2023-06-13T22:17:22.515Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/762186bc-21b7-4c51-9628-b39aac537d78/3d282b11-6f18-4e6d-b340-b84cce6b3dd4/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Part A: A Quick Tour of the Planets
    </video:title>
    <video:description>
      The eight planets of our solar system are shown to scale both in their relative sizes and distances from the Sun. Some interesting facts about each of these planets are also presented. Duration: 12:01.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2717953930001
    </video:player_loc>
    <video:duration>
      721
    </video:duration>
    <video:publication_date>
      2013-10-04T05:46:14.651Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3256568219001/speed-of-light-and-the-light-year</loc>
  <lastmod>2025-03-06T22:32:27.981Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/aa2563b0-a7f6-47b9-90b0-17681cdd4889/5683dbd0-0db7-493f-b31f-e22b43ba6889/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Speed of Light and the Light-Year
    </video:title>
    <video:description>
      A perspective on how fast light travels is given followed by an introduction to the light-year, which is a basic unit of astronomical distances. Duration: 4:45.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3256568219001
    </video:player_loc>
    <video:duration>
      286
    </video:duration>
    <video:publication_date>
      2014-02-25T21:58:56.261Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2725276961001/planet-mars</loc>
  <lastmod>2025-02-28T04:11:33.741Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/5969093c-e705-4b7d-a5c3-732382dd8166/f773f080-1448-4496-882c-a324b3869d19/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Planet Mars
    </video:title>
    <video:description>
      How Mars lost most of its geologic activity is discussed along with current geological features such as massive impact basins, ancient volcanoes, and carbon dioxide geysers. The possibility of terraforming Mars is also explored. Duration: 13:36.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2725276961001
    </video:player_loc>
    <video:duration>
      816
    </video:duration>
    <video:publication_date>
      2013-10-07T04:07:28.051Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3583463884001/gravity-due-to-acceleration</loc>
  <lastmod>2023-06-13T22:07:01.642Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/cb8f1a12-a71d-4bd4-9ce1-6fd200c12d04/15e0e9b4-fbe6-488c-8796-065050398ea2/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Gravity Due to Acceleration
    </video:title>
    <video:description>
      Is gravity truly a force, or is it what we experience when mass has the effect of warping both space and time? Duration: 6:40.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3583463884001
    </video:player_loc>
    <video:duration>
      401
    </video:duration>
    <video:publication_date>
      2014-05-23T06:04:47.669Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3407243203001/black-hole-formation</loc>
  <lastmod>2025-03-06T23:01:29.214Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/f4e8aa81-600c-47b2-ac3e-aa9148eac615/0c736900-ffae-438c-87dd-b14ddf41ab3d/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Black Hole Formation
    </video:title>
    <video:description>
      The effect of gravity on light is explored followed by how this can lead to the formation of a black hole. Duration: 8:20.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3407243203001
    </video:player_loc>
    <video:duration>
      500
    </video:duration>
    <video:publication_date>
      2014-03-29T16:34:57.489Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3304256535001/the-hertzsprung-russell-diagram</loc>
  <lastmod>2023-06-13T22:26:28.155Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/d78f6dc2-6b61-4219-a608-b985bf84c262/de3e3670-4691-4d51-bb7c-82b12b347309/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      The Hertzsprung-Russell Diagram
    </video:title>
    <video:description>
      This lesson explores the relationship between a star&#39;s luminosity its surface temperature, which, when correlated together, can be used to deduce the size of the star. Duration: 9:53.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3304256535001
    </video:player_loc>
    <video:duration>
      593
    </video:duration>
    <video:publication_date>
      2014-03-06T23:06:55.987Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3358985214001/novae-and-supernovae</loc>
  <lastmod>2023-06-13T22:17:06.772Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/6a0373b6-9b2a-4563-b5b4-7bb23d6ef4a4/d6fec3f2-a31d-4539-b462-eaf3adec028b/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Novae and Supernovae
    </video:title>
    <video:description>
      A nova results from the re-ignition of a white dwarf, while a supernova results from the collapse of a super massive star. Duration: 8:38.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3358985214001
    </video:player_loc>
    <video:duration>
      519
    </video:duration>
    <video:publication_date>
      2014-03-19T02:00:33.150Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3554543884001/introduction-to-cosmic-inflation</loc>
  <lastmod>2023-06-13T22:17:22.895Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/7d29adfd-7989-4ec1-9aa2-58de61fb9af7/674f5aac-17fc-49cf-9371-c890b16f3710/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Introduction to Cosmic Inflation
    </video:title>
    <video:description>
      A short introduction to the idea of cosmic inflation: Duration: 2:36.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3554543884001
    </video:player_loc>
    <video:duration>
      156
    </video:duration>
    <video:publication_date>
      2014-05-11T03:29:22.533Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3129916942001/why-one-side-always-faces-us</loc>
  <lastmod>2025-02-28T04:24:00.382Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/874d405b-4311-4f9e-aac1-e1cdea372b72/df2f7fcc-b6fd-4d41-9d6a-91610c69e1af/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Why One Side Always Faces Us
    </video:title>
    <video:description>
      Only one side of the Moon ever faces us because Earth&#39;s force of gravity on it is not uniform. This is related to our ocean tides and a lengthening of days on Earth. Duration: 7:58.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3129916942001
    </video:player_loc>
    <video:duration>
      478
    </video:duration>
    <video:publication_date>
      2014-01-31T06:41:56.433Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3073846939001/saturn-s-rings</loc>
  <lastmod>2025-03-07T23:54:38.177Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/2ff1991e-4aad-4abb-ab4b-a617ad69de39/b2ad6e29-e093-4f7a-aa60-f971a6df9651/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Saturn&#39;s Rings
    </video:title>
    <video:description>
      The dynamics resulting in Saturn&#39;s icy rings are explored as well as the system for naming these rings. Duration: 5:53.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3073846939001
    </video:player_loc>
    <video:duration>
      345
    </video:duration>
    <video:publication_date>
      2014-01-19T06:13:24.416Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3470028944001/types-of-galaxies</loc>
  <lastmod>2023-06-13T22:26:36.023Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/87bc2f3e-2823-4341-aa21-286fb5e4f237/8d4fb41d-1527-4e24-93fe-2e746d33bdf8/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Types of Galaxies
    </video:title>
    <video:description>
      This lesson introduces the elliptical, spiral, and irregular galaxies and how some of these galaxies may be unusually active in the production of stars or with the presence of a large central black hole. Duration: 9:30.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3470028944001
    </video:player_loc>
    <video:duration>
      571
    </video:duration>
    <video:publication_date>
      2014-04-15T06:03:35.336Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3293482089001/stellar-luminosity-and-color</loc>
  <lastmod>2023-06-13T22:26:06.053Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/97597380-d20e-41b4-90b3-5f4821106f95/e28e1062-a288-443f-8727-53fcccf0d8df/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Stellar Luminosity and Color
    </video:title>
    <video:description>
      Apparent brightness and luminosity are distinguished followed by a description of the meaning of a star&#39;s color. Duration: 6:24.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3293482089001
    </video:player_loc>
    <video:duration>
      384
    </video:duration>
    <video:publication_date>
      2014-03-05T01:08:34.401Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3129927045001/eclipses</loc>
  <lastmod>2025-02-28T04:25:13.971Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/a9f12277-f7ae-4989-be6b-0fc8931482a5/c77204ec-7b59-4fda-9fa4-c5e4dbb8d59f/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Eclipses
    </video:title>
    <video:description>
      The different types of solar and lunar eclipses and how they form are discussed. Duration: 7:09.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3129927045001
    </video:player_loc>
    <video:duration>
      429
    </video:duration>
    <video:publication_date>
      2014-01-31T06:46:53.314Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3162588460001/asteroids-and-meteors</loc>
  <lastmod>2025-02-28T04:33:23.565Z</lastmod>
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    </video:thumbnail_loc>
    <video:title>
      Asteroids and Meteors
    </video:title>
    <video:description>
      A brief introduction to the non-planet bodies of our solar system followed by a more in depth discussion of asteroids and meteors. Duration: 9:53.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3162588460001
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    <video:duration>
      593
    </video:duration>
    <video:publication_date>
      2014-02-06T21:54:31.890Z
    </video:publication_date>
    <video:category>
      Astronomy Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6053612899001/conceptual-academy-trailer</loc>
  <lastmod>2023-06-13T22:06:44.538Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/34e8fc3c-3c83-4461-b94d-fb34a2e4970b/5cafa1fd-e903-4cce-a24d-48aa75498136/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Conceptual Academy Trailer
    </video:title>
    <video:description>
      The heart of Conceptual Academy in 73 seconds. (Duration: 1:13)
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6053612899001
    </video:player_loc>
    <video:duration>
      73
    </video:duration>
    <video:publication_date>
      2019-06-28T18:03:35.549Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5577970175001/molecular-shapes---from-electron-pair-repulsion</loc>
  <lastmod>2024-07-13T19:42:56.998Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/7feeab9f-2f7d-44ae-8827-4bcd3f423927/3339713b-4b10-49d0-9edf-5882e68f3fc5/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Molecular Shapes - From Electron Pair Repulsion
    </video:title>
    <video:description>
      A quick review of how molecular shape can be determined from VSEPR: Valence Shell Electron Pair Repulsion. Duration: 6:53.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5577970175001
    </video:player_loc>
    <video:duration>
      413
    </video:duration>
    <video:publication_date>
      2017-09-16T05:39:25.619Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4728572373001/separating-mixtures</loc>
  <lastmod>2024-07-18T01:47:21.489Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/03fa2f1e-2fb5-4c8b-abc7-8c1bac0a0a69/fe4b1259-76a9-4b5a-8928-d7bb2f8e4623/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Separating Mixtures
    </video:title>
    <video:description>
      The components of a mixture are separated from one another by taking advantage of differences in their physical properties. Various examples are shown. Duration: 6:25 [C0306NNb]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4728572373001
    </video:player_loc>
    <video:duration>
      384
    </video:duration>
    <video:publication_date>
      2016-01-29T22:22:56.656Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5292583432001/how-small-are-atoms</loc>
  <lastmod>2024-07-13T23:06:47.840Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/a5c2a6a2-061c-4f2b-9e0d-9511845b8f75/868b37e3-67b4-42eb-85e0-faea57023dde/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      How Small Are Atoms?
    </video:title>
    <video:description>
      Dive into the head of a pin to get a sense of the smallness of atoms. Duration: 4:57. [C0201a]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5292583432001
    </video:player_loc>
    <video:duration>
      296
    </video:duration>
    <video:publication_date>
      2017-01-22T18:17:40.659Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4087700307001/scientific-notation</loc>
  <lastmod>2024-07-20T02:18:13.389Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/de32f850-6a55-4452-bc47-f4686b720b71/616fe487-5039-4282-a0e0-9a64c4e7e07f/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Scientific Notation
    </video:title>
    <video:description>
      A brief introduction to scientific notation. Duration: 7:31. [C0106b]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4087700307001
    </video:player_loc>
    <video:duration>
      451
    </video:duration>
    <video:publication_date>
      2015-03-02T04:23:58.132Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5337093641001/drinking-water-safe-to-drink</loc>
  <lastmod>2024-07-13T20:07:56.900Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/c93af4b8-c3d4-4554-8567-e102e8ffc4b2/399bad34-334d-4568-8aa2-65c1d69ecd74/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Drinking Water Safe to Drink
    </video:title>
    <video:description>
      A look into how municipal water is treated so as to be safe to drink. Duration: 4:39. [C0707a2]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5337093641001
    </video:player_loc>
    <video:duration>
      279
    </video:duration>
    <video:publication_date>
      2017-02-25T07:30:24.305Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5337093654001/sisomso</loc>
  <lastmod>2024-07-13T19:55:00.285Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/1b9ee039-9082-4335-acbf-233e29818240/c8936fb8-f85a-41cf-8cb9-b4686ec41dab/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Sisomso
    </video:title>
    <video:description>
      A look at semipermeable membranes and reverse osmosis for purifying water. Duration: 5:04. [C0707b2]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5337093654001
    </video:player_loc>
    <video:duration>
      304
    </video:duration>
    <video:publication_date>
      2017-02-25T07:37:32.994Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5269704009001/skepticism-and-denialism</loc>
  <lastmod>2024-07-13T23:09:28.256Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/77032d13-6c18-4f37-90a6-bea65a9f9d5b/37cd07dc-801d-42e4-9e28-e40d8df1f880/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Skepticism and Denialism
    </video:title>
    <video:description>
      How to distinguish between skepticism and denialism. Duration: 5:31. [C0201Nb]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5269704009001
    </video:player_loc>
    <video:duration>
      331
    </video:duration>
    <video:publication_date>
      2017-01-04T01:49:53.399Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4087700303001/accuracy-and-precision</loc>
  <lastmod>2024-07-20T02:18:51.375Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/48b3fa58-c7ef-4332-b00e-e2246828f0a2/62e63577-4cf4-4dbc-a90d-b811db7ab840/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Accuracy and Precision
    </video:title>
    <video:description>
      An introduction of the concepts of accuracy and precision followed by an explanation of significant figures. Duration: 8.04. [C0106c]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4087700303001
    </video:player_loc>
    <video:duration>
      484
    </video:duration>
    <video:publication_date>
      2015-03-02T04:18:58.841Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4095751630001/the-periodic-table</loc>
  <lastmod>2024-07-20T02:15:13.630Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/f7ea6ea8-4ff8-4efe-985a-0eef5c18d40e/af217abf-5346-4108-a6d3-ef14369955c1/480x360/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      The Periodic Table
    </video:title>
    <video:description>
      An introduction to the periodic table. Duration: 7:52 [C0303Na]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4095751630001
    </video:player_loc>
    <video:duration>
      463
    </video:duration>
    <video:publication_date>
      2015-03-05T17:40:47.032Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4579029449001/ideal-gas-laws</loc>
  <lastmod>2024-07-20T01:59:26.366Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/00c069b9-a27e-4ef3-ad52-f98f19ce993c/a93ce072-eb11-4b1a-b5f7-af9e525b1802/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Ideal Gas Laws
    </video:title>
    <video:description>
      A review of Boyle&#39;s, Charles&#39;s, and Avogadro&#39;s gas laws and how they can be combined into a single ideal gas law spelled out by the equation PV=nRT. Duration: 8:57.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4579029449001
    </video:player_loc>
    <video:duration>
      537
    </video:duration>
    <video:publication_date>
      2015-10-26T17:17:06.140Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5304306194001/entropy—a-fireside-chat</loc>
  <lastmod>2024-07-13T23:15:09.504Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/b50f9565-87d3-4557-89c5-fc246480a329/a157aebf-96f0-40e8-b58a-331cf66b4d2c/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Entropy—A Fireside Chat
    </video:title>
    <video:description>
      An introduction to the concept of entropy, which is a measure of the tendency of energy to disperse. Duration: 5:51. [C0905a]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5304306194001
    </video:player_loc>
    <video:duration>
      354
    </video:duration>
    <video:publication_date>
      2017-01-31T07:30:13.744Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4770909653001/atomic-nucleus---introduction</loc>
  <lastmod>2024-07-01T19:13:57.879Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/8bdd7d42-4886-4522-8859-bea85a74d697/8364a944-25c5-43af-9aec-72588d5abae3/480x360/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Atomic Nucleus - Introduction
    </video:title>
    <video:description>
      John discusses the importance of learning about the atomic nucleus from the top of an extinct volcano rising some 20,000 feet above the ocean floor. Duration: 2:19. [C0501Na]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4770909653001
    </video:player_loc>
    <video:duration>
      130
    </video:duration>
    <video:publication_date>
      2016-02-24T02:00:23.785Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2507049206001/kai-maile:-beach-sand-composition</loc>
  <lastmod>2024-08-14T18:40:45.323Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/18f3d9e1-79d9-46a0-9366-6c91bb7f5d37/9d299060-23af-41ab-8e08-cd1b76aecdc5/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Kai &amp; Maile: Beach Sand Composition
    </video:title>
    <video:description>
      Kai and Maile learn about the chemical composition of beach sand. Duration: 4:05 [C1006b]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2507049206001
    </video:player_loc>
    <video:duration>
      245
    </video:duration>
    <video:publication_date>
      2013-06-26T01:21:42.011Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2507002193001/acids-bases---introduction</loc>
  <lastmod>2024-08-11T22:46:50.851Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/bcdbf417-09d1-44e4-adef-95fdd65ec88c/cecc0b35-f432-41c6-af15-17aa3cc881f0/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Acids &amp; Bases - Introduction
    </video:title>
    <video:description>
      A brief introduction to the topics of this chapter -- acids and bases. Duration: 1:32. [C1001a]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2507002193001
    </video:player_loc>
    <video:duration>
      95
    </video:duration>
    <video:publication_date>
      2013-06-26T01:42:38.380Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4268968027001/lock-and-key-model</loc>
  <lastmod>2024-07-20T02:06:47.964Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/cfcee583-eb41-4aba-80dc-aff15f0149b6/aa1dc358-3f28-41b7-9c54-528d683c23cd/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Lock-and-Key Model
    </video:title>
    <video:description>
      John reviews the basic idea of the lock-and-key model of drug action and how it can be used to design more effective medicines. He also highlights the benefits of looking to natural products as another source of new medicines. Duration: 8:54.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4268968027001
    </video:player_loc>
    <video:duration>
      534
    </video:duration>
    <video:publication_date>
      2015-06-01T17:00:42.281Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4620877056001/nucleic-acids---what-they-are</loc>
  <lastmod>2024-07-20T01:34:52.120Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Nucleic Acids - What They Are
    </video:title>
    <video:description>
      This lesson reviews the structure of nucleotides and how they combine to form a nucleic acid. Duration: 5:06. [C1305a]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4620877056001
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    <video:duration>
      306
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    <video:publication_date>
      2015-11-19T06:38:56.206Z
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    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5326611409001/measuring-global-temperatures</loc>
  <lastmod>2024-07-13T23:03:59.702Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Measuring Global Temperatures
    </video:title>
    <video:description>
      A look at how average global temperatures from both the recent and distant past are measured. Duration: 6:31.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5326611409001
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    <video:duration>
      391
    </video:duration>
    <video:publication_date>
      2017-02-17T07:32:04.794Z
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    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5326635500001/the-greenhouse-effect</loc>
  <lastmod>2024-07-13T23:00:25.604Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      The Greenhouse Effect
    </video:title>
    <video:description>
      A description of how greenhouse gases help to keep our planet warm and how excess greenhouse gases help to make our planet even warmer. Duration: 8:01.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5326635500001
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    <video:duration>
      481
    </video:duration>
    <video:publication_date>
      2017-02-17T07:41:45.357Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5326620406001/runaway-feedback-loops</loc>
  <lastmod>2024-07-13T22:57:41.549Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/5121b5e2-5414-4a33-8f89-2316ce2b130d/a90dbca9-d669-4dd7-9a0a-d8384516dc89/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Runaway Feedback Loops
    </video:title>
    <video:description>
      Examples of both negative and positive feedback loops and how they play a role in global climate. Duration: 8:28.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5326620406001
    </video:player_loc>
    <video:duration>
      508
    </video:duration>
    <video:publication_date>
      2017-02-17T07:57:22.536Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5336952461001/water-pollution</loc>
  <lastmod>2024-07-13T20:37:42.390Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/708427ef-3692-469c-8c2e-610cdffb2f1f/7ed70660-ba89-4853-8537-78721941e5e6/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Water Pollution
    </video:title>
    <video:description>
      A quick review of point and nonpoint source water pollution followed by a more in depth discussion of dissolved oxygen. Duration: 4:46.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5336952461001
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    <video:duration>
      286
    </video:duration>
    <video:publication_date>
      2017-02-25T05:05:22.132Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4392001130001/cocaine</loc>
  <lastmod>2023-06-13T22:06:55.837Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/e21d7fdd-89bf-4bb2-b54c-22a7d5a9c074/c94f5391-c266-4cd7-a1f4-f3916c6ee183/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Cocaine
    </video:title>
    <video:description>
      A presentation of the mechanism of action of cocaine within the reward center. Duration: 4:32.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4392001130001
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    <video:duration>
      272
    </video:duration>
    <video:publication_date>
      2015-08-01T16:04:11.452Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3779966450001/earth-s-atmosphere</loc>
  <lastmod>2024-07-20T21:06:11.006Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Earth&#39;s Atmosphere
    </video:title>
    <video:description>
      A brief introduction to Earth&#39;s atmosphere and how it consists of gaseous atoms and molecules energized by solar radiation but also held down by Earth&#39;s gravity. Duration: 5:01.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3779966450001
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    <video:duration>
      302
    </video:duration>
    <video:publication_date>
      2014-09-11T16:54:43.798Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2506204398001/density</loc>
  <lastmod>2024-08-21T02:32:18.846Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/cb9567a0-2a47-45d1-9906-0063625b65a6/c3d2e28d-8902-4dc0-ad96-4883ded82677/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Density
    </video:title>
    <video:description>
      A review of the concept of density with analogies and examples. Duration: 8:06.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2506204398001
    </video:player_loc>
    <video:duration>
      486
    </video:duration>
    <video:publication_date>
      2013-06-25T18:19:18.881Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3821989962001/atmospheric-structure</loc>
  <lastmod>2021-03-04T00:21:24.820Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/db65bab0-c97a-42c5-b65e-f1a5ec66015d/3926a0b6-bb4a-4017-9199-bbf369689b32/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Atmospheric Structure
    </video:title>
    <video:description>
      This video explores the structure, properties, and composition of the various layers of our atmosphere. Duration: 5:28.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3821989962001
    </video:player_loc>
    <video:duration>
      328
    </video:duration>
    <video:publication_date>
      2014-10-05T19:53:39.890Z
    </video:publication_date>
    <video:category>
      Chemistry Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815422397001/photosynthesis</loc>
  <lastmod>2024-07-13T19:32:49.633Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/49d19069-2243-4f8a-a069-3677e29861e1/ca1771d3-d6d3-49f0-9903-d092661e9776/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Photosynthesis
    </video:title>
    <video:description>
      A brief description of photosynthesis, a process whereby plants absorb carbon dioxide and water to produce molecular oxygen and glucose. (Duration: 1:57) (CIS15D)
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815422397001
    </video:player_loc>
    <video:duration>
      117
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.526Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815425335001/breathing</loc>
  <lastmod>2024-07-13T19:09:36.183Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/59d1b485-9607-47a5-9938-4ae16a1f5d93/a67b201b-2375-4675-bd5d-fc51821b14be/1280x720/match/image.jpg
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    <video:title>
      Breathing
    </video:title>
    <video:description>
      A quick review of the biology of breathing. (Duration: 1:45) (CIS20.3)
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815425335001
    </video:player_loc>
    <video:duration>
      105
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.759Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815427929001/plants</loc>
  <lastmod>2024-07-13T19:31:06.457Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/e1bca210-0658-486e-af4e-427ee8e3b923/5f7d2486-54f4-4af8-a056-61cfc9c0d0ac/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Plants
    </video:title>
    <video:description>
      After defining properties of plants we take a look at three major types: Mosses, Ferns, and Seed Plants (Duration: 2:53) CIS18.6
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815427929001
    </video:player_loc>
    <video:duration>
      175
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.641Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815425334001/the-food-chain</loc>
  <lastmod>2024-07-13T19:10:34.775Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/8f9ea876-64b9-4a8e-933c-43e9ff1d4cbc/00132cb0-ec12-4aa2-85a3-69307e7d6da5/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      The Food Chain
    </video:title>
    <video:description>
      A quick review of the food chain, also known as trophic structure. (Duration: 2:03) (CIS21.4)
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815425334001
    </video:player_loc>
    <video:duration>
      123
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.746Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815426856001/chromosomes</loc>
  <lastmod>2024-07-13T19:37:45.020Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/b06a91d5-4bc1-4b02-9bef-a803fb111323/dfb592fc-d34d-4c7a-ae0d-25efaed9f16c/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Chromosomes
    </video:title>
    <video:description>
      DNA is found in the cell nucleus neatly wound into condensed packages called chromosomes. Duration: 1:34) CIS16.2
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815426856001
    </video:player_loc>
    <video:duration>
      94
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.435Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815430332001/speciation</loc>
  <lastmod>2024-07-13T19:34:20.659Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/c53f8f6c-3240-41b2-9050-393662ff6bcd/ef8e165c-c525-4d39-9205-d610ca060800/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Speciation
    </video:title>
    <video:description>
      New species can form when populations within a single species are separated by geographic boundaries. (Duration 1:46) (CIS1705a)
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815430332001
    </video:player_loc>
    <video:duration>
      106
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.460Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815424431001/natural-selection</loc>
  <lastmod>2024-07-13T19:38:07.973Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/b9929d51-866f-48ee-b8f8-ef064243a10d/9e662aa8-9a26-4209-9723-4c0104e048d5/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Natural Selection
    </video:title>
    <video:description>
      A review of natural selection in three steps: genetic variation, natural selection, and evolution. (Duration: 2:24) CIS17.4
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815424431001
    </video:player_loc>
    <video:duration>
      174
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.432Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5300442282001/prokaryotic-and-eukaryotic-cells</loc>
  <lastmod>2024-07-13T23:16:20.186Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/b281fe76-9584-46a7-b24c-8b9ece889edb/d26b9486-e49a-4ef7-ae86-eb2c63c17c1a/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Prokaryotic and Eukaryotic Cells
    </video:title>
    <video:description>
      A review cast of prokaryotic and eukaryotic cells, which are the two major classes of cells in all living organisms. Duration: 3:28. [CIS1502a]
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5300442282001
    </video:player_loc>
    <video:duration>
      208
    </video:duration>
    <video:publication_date>
      2017-01-27T22:19:06.711Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815427928001/hemoglobin</loc>
  <lastmod>2024-07-13T19:35:57.328Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    <video:title>
      Hemoglobin
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    <video:description>
      Hemoglobin helps to transport oxygen to where it is needed most, which is where the metabolic activity is the greatest. (Duration: 2:09) (CIS20A)
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    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815427928001
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    <video:duration>
      129
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    <video:publication_date>
      2018-07-30T02:27:49.436Z
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    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5642232648001/hormones</loc>
  <lastmod>2024-07-13T19:40:07.964Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    <video:title>
      Hormones
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    <video:description>
      Organs within our body communicate with each other by sending chemicals to each other. These chemicals are known as hormones. After being released, they travel through the blood system to target cells located within the target organ. Duration: 5:10.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5642232648001
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      310
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    <video:publication_date>
      2017-11-11T01:03:48.253Z
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    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815430333001/the-nervous-system</loc>
  <lastmod>2024-07-13T19:27:34.567Z</lastmod>
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    <video:title>
      The Nervous System
    </video:title>
    <video:description>
      A quick review of the architecture of the nervous system. (Duration: 2:15) CIS19.4
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    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815430333001
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    <video:duration>
      130
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    <video:publication_date>
      2018-07-30T02:27:49.682Z
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    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815426857001/characteristics-of-life</loc>
  <lastmod>2024-07-13T19:33:59.667Z</lastmod>
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    <video:thumbnail_loc>
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    <video:title>
      Characteristics of Life
    </video:title>
    <video:description>
      Some of the characteristics of life include the use of energy as well as the ability to grow, maintain, reproduce, and evolve. (Duration: 1:37) CIS15.1
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815426857001
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    <video:duration>
      97
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    <video:publication_date>
      2018-07-30T02:27:49.487Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815427348001/domains-of-life</loc>
  <lastmod>2024-07-13T19:32:09.703Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    <video:title>
      Domains of Life
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    <video:description>
      A brief overview of the three domains of life. (Duration: 1:23)
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    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815427348001
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    <video:duration>
      83
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.577Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/5815424432001/homeostasis</loc>
  <lastmod>2024-07-13T19:11:32.713Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Homeostasis
    </video:title>
    <video:description>
      The body regulating its internal environment is called homeostasis.(Duration: 1:35) CIS 19.2
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=5815424432001
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    <video:duration>
      95
    </video:duration>
    <video:publication_date>
      2018-07-30T02:27:49.706Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/4614117217001/polypeptides</loc>
  <lastmod>2024-07-20T01:43:04.354Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Polypeptides
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    <video:description>
      A polypeptide is a polymer of amino acids. A protein is a polypeptide with biological function. Duration: 4:26. C1304a
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=4614117217001
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    <video:duration>
      266
    </video:duration>
    <video:publication_date>
      2015-11-15T19:38:28.484Z
    </video:publication_date>
    <video:category>
      Biology Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
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  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6060444939001/how-a-mirror-flips</loc>
  <lastmod>2024-07-13T18:24:19.869Z</lastmod>
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    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/0a7d8ed4-1910-4876-956d-b0c7ba02415c/082454a6-d2e0-4e61-a4d8-2083126f58fe/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      How A Mirror Flips
    </video:title>
    <video:description>
      Why do mirrors reverse left and right? Answer: They don&#39;t! (Duration: 7:45)
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6060444939001
    </video:player_loc>
    <video:duration>
      466
    </video:duration>
    <video:publication_date>
      2019-07-17T19:42:25.444Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6050486443001/the-nature-of-sound</loc>
  <lastmod>2024-06-28T22:57:33.350Z</lastmod>
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    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/50835745-d07d-47b6-b57f-44f4fe4c2d86/31284a35-2399-4d8f-8b83-7eadf2a44ebc/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      The Nature of Sound
    </video:title>
    <video:description>
      We can define sound as a series of longitudinal waves traveling through some medium, such as a solid, liquid, or gas. Duration: 3:58.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6050486443001
    </video:player_loc>
    <video:duration>
      238
    </video:duration>
    <video:publication_date>
      2019-06-20T18:45:04.842Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6046275248001/doppler-effect</loc>
  <lastmod>2024-07-13T18:30:45.041Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/96f376fa-a966-46e3-869c-c470ba0a55c2/7e1d12f9-f6a8-4b00-ba85-c529281f52ac/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Doppler Effect
    </video:title>
    <video:description>
      Changing wavelength and frequency due to motion is called the Doppler Effect. Duration: 1:27.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6046275248001
    </video:player_loc>
    <video:duration>
      87
    </video:duration>
    <video:publication_date>
      2019-06-09T19:59:23.964Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6042423062001/compression-and-expansion</loc>
  <lastmod>2024-07-13T18:36:32.763Z</lastmod>
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    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/4082e1a4-3303-4149-8519-c19c8587693e/f7ae25aa-e6ea-402a-8cb7-75d5f447a08d/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Compression and Expansion
    </video:title>
    <video:description>
      As air rises, it expands. As it cools, any moisture condenses. This warms the air to allow for further rising, which results in further expansion followed by condensation. Eventually, a thundercloud may be formed. Duration: 2:56.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6042423062001
    </video:player_loc>
    <video:duration>
      176
    </video:duration>
    <video:publication_date>
      2019-05-29T20:02:20.604Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6039049086001/sink-or-rise</loc>
  <lastmod>2024-07-13T18:55:16.166Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/c980b018-2ea6-4867-8949-ff3ab0482879/da3e5302-cf40-4b12-961a-ea1917b2111f/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Sink or Rise
    </video:title>
    <video:description>
      A submerged object sinks if its weight is greater than the buoyant force. It will rise if the weight is less than the buoyant force. Duration: 2:31. 
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6039049086001
    </video:player_loc>
    <video:duration>
      151
    </video:duration>
    <video:publication_date>
      2019-05-20T19:56:50.366Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6032070034001/momentum</loc>
  <lastmod>2024-07-13T19:03:22.353Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/a7dca130-eb39-488f-8ec4-79466af7f1d3/e489936d-5283-46a8-8b80-b46e83bdc735/1280x720/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Momentum
    </video:title>
    <video:description>
      Momentum is &quot;inertia in motion&quot; and defined as an object&#39;s mass times velocity. Duration: 1:51.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6032070034001
    </video:player_loc>
    <video:duration>
      111
    </video:duration>
    <video:publication_date>
      2019-05-02T03:47:23.861Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/6031293423001/of-worms-and-the-moving-earth</loc>
  <lastmod>2024-07-13T19:05:17.304Z</lastmod>
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    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Of Worms and the Moving Earth
    </video:title>
    <video:description>
      How can a bird jumping from a tree branch catch a worm on the ground when the ground is through space at 30 km/s? Duration: 0:47.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=6031293423001
    </video:player_loc>
    <video:duration>
      47
    </video:duration>
    <video:publication_date>
      2019-04-30T02:52:37.334Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2555431607001/newton’s-second-law</loc>
  <lastmod>2024-08-06T15:11:17.614Z</lastmod>
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    </video:thumbnail_loc>
    <video:title>
      Newton’s Second Law
    </video:title>
    <video:description>
      A video of Paul in the classroom is followed up with a discussion of force, mass, and the acceleration of freely-falling rocks. Duration: 3:24. PGH019
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    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2555431607001
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    <video:duration>
      204
    </video:duration>
    <video:publication_date>
      2013-07-19T18:21:21.535Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2584990751001/nellie-in-an-elevator</loc>
  <lastmod>2024-08-06T14:37:11.603Z</lastmod>
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    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Nellie in an Elevator
    </video:title>
    <video:description>
      Paul investigates the forces that act on Nellie Newton in an elevator. Duration: 3:24. PGH023
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    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2584990751001
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    <video:duration>
      204
    </video:duration>
    <video:publication_date>
      2013-08-05T04:33:33.855Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2731117710001/force-x-distance</loc>
  <lastmod>2024-07-25T20:27:39.828Z</lastmod>
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    </video:thumbnail_loc>
    <video:title>
      Force x Distance
    </video:title>
    <video:description>
      Work occurs when a force is applied over a distance. This, in turn, changes the amount of energy. Duration: 5:50.
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    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2731117710001
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      350
    </video:duration>
    <video:publication_date>
      2013-10-09T06:23:24.915Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2555292491001/free-fall</loc>
  <lastmod>2024-08-06T15:14:03.078Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/4f58259a-ed45-4f58-8db4-03562bc6cce3/55020018-63b2-49a2-8326-c8f8c30d755f/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Free Fall
    </video:title>
    <video:description>
      Paul investigates and develops free-fall equations as Phil Physiker drops a boulder, with a speedometer attached, from a high cliff. Duration: 8:32. PGH012
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2555292491001
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    <video:duration>
      512
    </video:duration>
    <video:publication_date>
      2013-07-19T16:53:37.220Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2735365642001/ohm-s-law</loc>
  <lastmod>2025-02-02T03:25:50.970Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Ohm&#39;s Law
    </video:title>
    <video:description>
      The relationship between electric current, voltage, and resistance is spelled out as an exact equation known as Ohm&#39;s Law. Duration: 2:57.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2735365642001
    </video:player_loc>
    <video:duration>
      179
    </video:duration>
    <video:publication_date>
      2013-10-10T19:04:21.497Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2617085182001/skateboard-torque</loc>
  <lastmod>2024-07-25T23:12:30.690Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
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    </video:thumbnail_loc>
    <video:title>
      Skateboard Torque
    </video:title>
    <video:description>
      PGH042
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2617085182001
    </video:player_loc>
    <video:duration>
      108
    </video:duration>
    <video:publication_date>
      2013-08-19T20:36:51.220Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2731080212001/action-reaction</loc>
  <lastmod>2024-07-25T21:54:15.749Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/a69f7ab6-e199-4f91-9b5f-f087fa4538cb/f461de73-a08f-4650-a004-364c4937ca6c/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Action-Reaction
    </video:title>
    <video:description>
      Hewitt introduces Newton&#39;s third law, which is the law of action-reaction. Duration: 4:04.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2731080212001
    </video:player_loc>
    <video:duration>
      245
    </video:duration>
    <video:publication_date>
      2013-10-09T04:56:11.088Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2735233166001/projectile-motion</loc>
  <lastmod>2024-07-22T01:34:13.976Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/7822ae8d-0125-4a61-be89-d22307b5f5dc/474f913f-b068-4ec8-98a1-7e5d792c47bf/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Projectile Motion
    </video:title>
    <video:description>
      An object in free fall moving sideways is affected by the force of gravity just as if it were not moving sideways. Downward acceleration and sideways motion together results in a curved fall. Duration: 6:52.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2735233166001
    </video:player_loc>
    <video:duration>
      413
    </video:duration>
    <video:publication_date>
      2013-10-10T17:55:30.297Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2735365676001/pressure-cooker</loc>
  <lastmod>2024-07-21T00:00:54.218Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/d79d9910-afcb-4cfb-8958-172ec19dc117/8f7220ad-9abd-4eb0-8ad0-6cfd9b9a619f/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Pressure Cooker
    </video:title>
    <video:description>
      A description of how the boling point of a liquid depends on pressure and how a pressure cooker allows for a higher boiling temperature. Duration: 4:17.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2735365676001
    </video:player_loc>
    <video:duration>
      257
    </video:duration>
    <video:publication_date>
      2013-10-10T19:13:28.777Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3403567766001/water-and-electric-circuits</loc>
  <lastmod>2024-07-20T22:55:35.840Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/f89136a2-b81b-408c-87fb-536db569a9d8/c25f7a95-17a1-469a-ba2c-90b6e9092627/480x360/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Water and Electric Circuits
    </video:title>
    <video:description>
      The similarities and differences between electric and hydraulic circuits. Duration: 5:54. PGH093
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3403567766001
    </video:player_loc>
    <video:duration>
      354
    </video:duration>
    <video:publication_date>
      2014-03-28T16:32:45.199Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/3403451183001/rainbows</loc>
  <lastmod>2024-06-27T17:27:20.902Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/c25869c0-1395-48bc-bfdd-10c816e4f5d0/9dacb309-7a8e-43e1-9084-429129359c28/480x360/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Rainbows
    </video:title>
    <video:description>
      Dispersion and the roundness of rainbows are discussed. Duration: 6:05. PGH108
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=3403451183001
    </video:player_loc>
    <video:duration>
      366
    </video:duration>
    <video:publication_date>
      2014-03-28T15:46:40.231Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2735301085001/electric-motors</loc>
  <lastmod>2024-06-27T17:36:14.213Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/84c4bc4a-0332-4733-812a-442b741a092d/d57611e1-18f9-4b68-831e-a59d573e030f/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Electric Motors
    </video:title>
    <video:description>
      A demonstration of how a current carrying wire is deflected by a magnet and how this is the underlying principle behind any electric motor. Duration: 2:30.
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2735301085001
    </video:player_loc>
    <video:duration>
      150
    </video:duration>
    <video:publication_date>
      2013-10-10T18:52:32.571Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2611357021001/newton’s-third-law</loc>
  <lastmod>2024-08-06T14:26:01.748Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/3db69010-3a8b-4ea8-a70d-76b3be2503d5/3f6455a0-03e3-43d9-b128-59a4b538cf69/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Newton’s Third Law
    </video:title>
    <video:description>
      Paul and wife Lil illustrate that one cannot touch without being touched -- with supporting examples. Duration: 7:06. PGH021
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2611357021001
    </video:player_loc>
    <video:duration>
      426
    </video:duration>
    <video:publication_date>
      2013-08-16T14:30:49.722Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2555225110001/nellie’s-rope-tensions</loc>
  <lastmod>2024-08-06T17:13:56.126Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/178671bb-9dfe-4d6d-a9a9-afb4001e451f/65418e16-833f-4909-bed0-3d0cdf8cbb15/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Nellie’s Rope Tensions
    </video:title>
    <video:description>
      Nellie introduces parallelogram rule, then hanging by ropes at angle. Duration: 4:39. PGH004
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2555225110001
    </video:player_loc>
    <video:duration>
      279
    </video:duration>
    <video:publication_date>
      2013-07-19T16:05:25.265Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
<url>
  <loc>https://conceptualacademy.gallery.video/detail/video/2617120979001/atmospheric-pressure</loc>
  <lastmod>2024-07-25T22:12:16.044Z</lastmod>
  <video:video>
    <video:thumbnail_loc>
      https://cf-images.us-east-1.prod.boltdns.net/v1/static/2505476419001/c0382ed7-1cc8-4696-b01e-882e3157d6b5/aff5bc70-53eb-4221-a489-968435a10f3d/480x270/match/image.jpg
    </video:thumbnail_loc>
    <video:title>
      Atmospheric Pressure
    </video:title>
    <video:description>
      PGH065
    </video:description>
    <video:player_loc allow_embed="yes" autoplay="autoStart=true">
      https://players.brightcove.net/2505476419001/H1DGNmiVl_default/index.html?videoId=2617120979001
    </video:player_loc>
    <video:duration>
      457
    </video:duration>
    <video:publication_date>
      2013-08-19T21:05:34.357Z
    </video:publication_date>
    <video:category>
      Physics Samples
    </video:category>
    <video:gallery_loc title="About Conceptual Academy">
      https://conceptualacademy.gallery.video
    </video:gallery_loc>
  </video:video>
</url>
</urlset>
