Lesson 29 · about 25 minutes

Air and climate

How carbon dioxide and methane trap heat, and what CFCs did to the ozone layer.

You will learn

  • What air is made of
  • How some gases trap heat, and why nitrogen and oxygen let it pass
  • Where the carbon dioxide and methane in the air come from
  • How CFCs thinned the ozone layer, and how it is recovering

Sections

  1. What air is made of
  2. Gases that trap heat
  3. Bonds that stretch and bend
  4. Where carbon dioxide and methane come from
  5. CFCs and the ozone layer
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