The Ozone layer

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  • Created by: Nadine_M
  • Created on: 19-04-15 21:53
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  • The ozone layer
    • Troposphere
      • harmful effects on the respiratory system
    • Stratosphere
      • Protects living organisms by preventing harmful UV light from reaching the Earth's surface
    • UV-a
      • reaches Earth's surface. Doesn't cause much concern.
    • UV-b
      • Can cause sunburn and sometimes genetic damage which can result to skin cancer.
    • UV-c
      • Is entirely screened out by the ozone layer.
    • Formation of ozone
      • Firstly: O2 + (radiation 2O
      • O2 + O --> O3 + heat
    • How the ozone layer works
      • O3 + (radiation < 310nm) --> O2 + O
      • O2 + O --> O3 + heat
        • Chemical energy released when O and O2 combine is converted to kinetic energy of molecular motion (heat)
      • O2 + O ? O3
    • Removal of Ozone
      • O3 + O --> 2O2

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