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6 Written questions

6 Multiple choice questions

  1. 1. It would cost about $27 trillion for the US to lower CO2 emissions by 70% in the next 40 years
    - Would save industry $5 trillion
    2. Net savings $2.3 trillion
  2. 15 years later
    Roland and Molina finally convince politicians to slowly phase out CFCs
  3. The global sunscreen
    Ozone Layer
    1. Ozone is produced when oxygen molecules interact with lightning and UV radiation from the sun
    2. Keeps 99% of the suns harmful UV radiation from reaching Earths surface
    3. Helps protect human skin cancer, cateracts, sun burns, and damage to the immune system
    4. Protects plants and animals and prevents O2 from changing to O3
  4. 1. At the poles
    2. Austrilla
    3. New Zealand
    4. South Africa
  5. bad
    increase in average global temperature
  6. good
    different elements in the atmosphere such as H2O vapor, CO2, CH4, N2O, CFC5 hold solar radiation in the form of heat in our atmosphere

5 True/False questions

  1. 1974CFCs were $28 billion per year industry
    - Scientist Roland and Molina asked for a ban

          

  2. Effects1. The amount of CO2 in the atmosphere is increasing by .4% per year
    2. The net effect would be an increase in the global temperature of about 2 degrees Celsius by 2100
    3. Gasses leading to global warming
    - Methane
    - Chlorofluorocarbons
    - Nitrous Oxide

          

  3. ThermosphereTemperature decreases with altitude

          

  4. Ways to Reduce CO21. Cut fossil fuel use
    - uses e more efficiently
    - use natual gas
    - uses 1/2 as much CO2 as burning of coal to generate electricity
    2. Improve energy efficiency
    3. Shift to renewable energy sources
    - solar
    - wind
    - water
    4. Reduce deforestation
    - Absorb CO2 that we put in the atmosphere
    - Each person would need to plant 1,000 trees a year
    5. Use sustainable agriculture
    - use organic fertilizers
    - soil and water conservation
    - Planting a variety of crops in a large area
    6. Slow population growth

          

  5. Chlorofluorocarbons since 1930bad
    increase in average global temperature

          

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