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20 True/False questions

  1. When atmospheric CO2 dissolves in seawater, it forms ________.stratosphere

          

  2. Explosive volcanic eruptions can act to ________ global temperatures.lower

          

  3. Increased levels of atmospheric CO2 will ultimately ________ the pH of global oceans.10 and 23 cm

          

  4. Melting of permafrost will release ________ as a result of decomposing vegetation.10 and 23 cm

          

  5. Sea level has risen between ________ over the last 100 years.10 and 23 cm

          

  6. Fifty percent of Earth's atmosphere is found below an altitude of ________.5.6 km

          

  7. Some scientists believe that these huge magnetic storms are responsible for variations in temperature and precipitation.sunspots

          

  8. A general term for particulate matter found in the atmosphere is ________.aerosols

          

  9. Burning which of the following materials contributes carbon dioxide to Earth's atmosphere?A, B, and C

          

  10. Global warming is likely to have a greater adverse effect on ________ regions.polar

          

  11. As you ascend in elevation within the troposphere, the air temperature decreases ________.6.5 ºC/km

          

  12. The increase in global temperature during the twentieth century was approximately ________.0.8°C

          

  13. Methane (CH4), nitrous oxide (N2O), and chlorofluorocarbons (CFCs) are considered ________ (greenhouse) gases.albedo

          

  14. A surface's ________ is the amount of total radiation that it reflects.10 and 23 cm

          

  15. If Earth's atmosphere contained no greenhouse gases, the average surface temperature would be ________.carbonic acid

          

  16. Ozone is concentrated in the ________.A and B

          

  17. Eccentricity, obliquity, and precession are considered to be causes of ________ climate change.albedo

          

  18. The climate system involves the exchanges of energy and moisture that occur among the ________ spheres.five

          

  19. Tree rings can be used ________.stratosphere

          

  20. The amount of radiation reflected by a surface is termed its ________.carbonic acid