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Ocean Acidification: The Other Carbon Dioxide Problem
http://www.nnvl.noaa.gov/MediaDetail.php?MediaID=722&MediaTypeID=2

NOAA, National Oceanic and Atmospheric Administration

This NOAA video discusses how the ocean absorbs the increased amount of carbon dioxide released into the atmosphere, thereby changing the pH and buffering action of the ocean. These changes in pH are impacting calcifying organisms, such as corals and shellfish, and related food chains and ecosystems.

Video length: 3:58 min.

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Climate Literacy
About Teaching Climate Literacy

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
Other materials addressing 7d

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.
Explore the map of concepts related to this benchmark

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

  • As with all YouTube videos, teachers may want to limit access to the comments section. View in full-screen mode to limit distractions of YouTube ads and comments.
  • Can be used in a chemistry, oceanography, marine biology, biology, ecosystem, environmental science unit on acids and bases/pH.

About the Science

  • The NOAA video discusses the causes of ocean acidification, ocean carbonate chemistry, sampling techniques, and impact of ocean acidification on marine food webs.
  • Passed initial science review - expert science review pending.

About the Pedagogy

  • The educator will need to provide context in which to embed this video. A basic pre-knowledge of acids, bases, and chemical formulas would be helpful for better understanding this video.
  • Teachers need to make clear that even though the process is called "ocean acidification" it does not mean that the ocean will become acid, but that the ocean, now slightly alkaline, has diminished carbonate buffering potential.

Technical Details/Ease of Use

  • This is a YOUTUBE video accessed from NOAA's YouTube visualization website.
  • Closed captioned text provided.

Related URLs These related sites were noted by our reviewers but have not been reviewed by CLEAN

http://www.nnvl.noaa.gov/MediaDetail.php?MediaID=722&MediaTypeID=2 This is the original source.

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