Greenhouse Effect Global Warming

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Greenhouse EffectGlobal Warming

• 18.1

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The Greenhouse Effect

• Suns energy (aka- heat) gets trapped in the
  troposphere
• Some radiation that reaches Earths surface is
  absorbed.
• Some energy is reflected.

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The Greenhouse Effect

• Reflected heat might get trapped by carbon
  dioxide, water vapor, or other gases.
• Trapped heat makes atmosphere warmer.
• Warm atmosphere reflects heat to Earths surface
  again!

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Greenhouse Effect

• No greenhouse effect would mean colder than
  average temps.
• Too much, however, can cause a rise in average
  temps.

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Global Warming

• Global warming IS the rise in average temps.
• Melting ice caps, rising seas, droughts

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Global Warming

• Probable cause carbon dioxide
• Where does it come from?
• Burning of fossil fuels (coal, oil, natural gas)