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What About the Ozone Hole?

Katharine Hayhoe, Global Weirding, Public Broadcasting Service

This video provides history on product development by General Motors and other industries that led to the release of Chlorofluorocarbons (CFCs). It explains the connection between global warming and the ozone hole, chemical build-up in our lower and upper atmospheres, the increase in GWP gases, increased air quality ozone alerts and the 1987 Montreal Protocol that banned the use of CFCs globally.

Video length is 8:33 mins

Learn more about Teaching Climate Literacy and Energy Awareness»

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

  • This video could be watched as a whole group or in a flipped classroom setting.
  • This is a great introductory tool that can be used to drill down into the specific issues named in this video. It can also serve as a re-teaching or as a reinforcement tool.

About the Science

  • This video focuses on the history of the ozone hole and the impacts of CFCs on the ozone. The video explains why we as a society started using these harmful CFCs and the policy that eventually banned CFCs globally.
  • Provides a good, detailed explanation of how incoming solar radiation (UV rays) and CFCs are harmful to the ozone.
  • The video explains how these chemicals build up in the lower and upper atmospheres over time, especially at the poles. Upper atmospheric ozone protects us from harmful UV rays, but a high amount of ozone in the lower atmosphere (near the ground) is actually harmful.
  • Passed initial science review - expert science review pending.

About the Pedagogy

  • Students learn about the harmful impacts of CFCs on ozone and learn about "harmful" ozone in the lower atmosphere. Students also learn that a global policy can be enacted to solve a worldwide environmental issue which could set up a good class discussion or debate related to climate change policies.
  • A considerable amount of scientific/chemistry terms and concepts are used throughout this video. Therefore, students should have some knowledge of solar radiation (energy budget), UV radiation, ozone (upper and lower atmosphere), and about some chemistry (ex. CFCs).
  • No teacher or student instructional support provided.

Technical Details/Ease of Use

  • This video will appeal most to visual and auditory learners. Video does have closed-captioning but some html code is displayed and could be confusing to non-English speakers.

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

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