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Acid Oceans
http://www.youtube.com/watch?v=mFlOgNrfSdo

American Museum of Natural History (AMNH)

This video follows biologist Gretchen Hofmann as she studies the effects of ocean acidification on sea urchin larvae.

Video length: 6:38 min.

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Climate Literacy
About Teaching Climate Literacy

e on Earth depends on, is shaped by, and affects climate
About Teaching Principle L
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Environmental observations are the foundation for understanding the climate system. From the bottom of the ocean to the surface of the Sun, instruments on weather stations, buoys, satellites, and other platforms collect climate data. To learn about past climates, scientists use natural records, such as tree rings, ice cores, and sedimentary layers. Historical observations, such as native knowledge and personal journals, also document past climate change.
About Teaching Principle 5
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The chemistry of ocean water is changed by absorption of carbon dioxide from the atmosphere. Increasing carbon dioxide levels in the atmosphere is causing ocean water to become more acidic, threatening the survival of shell-building marine species and the entire food web of which they are a part.
About Teaching Principle 7
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Ecosystems on land and in the ocean have been and will continue to be disturbed by climate change. Animals, plants, bacteria, and viruses will migrate to new areas with favorable climate conditions. Infectious diseases and certain species will be able to invade areas that they did not previously inhabit.
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Benchmarks for Science Literacy
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Scientific investigations usually involve the collection of relevant data, the use of logical reasoning, and the application of imagination in devising hypotheses and explanations to make sense of the collected data.
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Changes in environmental conditions can affect the survival of individual organisms and entire species.
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Notes From Our Reviewers The CLEAN collection is hand-picked and rigorously reviewed for scientific accuracy and classroom effectiveness. Read what our review team had to say about this resource below or learn more about how CLEAN reviews teaching materials
Teaching Tips | Science | Pedagogy | Technical Details

Teaching Tips

About the Science

  • The ocean has absorbed about a third of the carbon dioxide emitted through human activities, altering the pH of the ocean, reducing its buffering.
  • Through the University of California, Santa Barbara, sea urchins are used to set up ocean acidification experiments testing how CO2 affects sea urchins' formation of their calcified parts like spines, exoskeleton and mouth parts.
  • Comments from expert scientist: excellent discussion of real studies of the effects of ocean acidification on development of larval urchins. I would use it in any high school or college class.

About the Pedagogy

  • Background text provided and links to discussion questions provided.
  • Glossary and Additional classroom implementation activity set up to go along with video are available with links and additional background.

Technical Details/Ease of Use

  • Excellent quality.

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