Earth's Atmosphere Composition

Front

What are the main components of Earth's atmosphere?

Back

Nitrogen and oxygen.

Front

3. Stratospheric ozone is important because it

Back

absorbs harmful UV radiation

Front

4. Which of the following would be found in the troposphere?

Back

clouds and rain

Front

5. An international treaty was signed in Montreal in 1987 to phase out these chemicals because they destroy stratospheric ozone by converting it into oxygen

Back

CFCs

Front

6. The earth absorbs and reflects sunlight.  ____ refers to the amount of reflected light given off.

Back

Albedo

Front

7. The majority of incoming solar radiation is

Back

absorbed by Earth's surface

Front

8. Certain gases, such as methane, carbon dioxide, and nitrous oxide, trap heat in the lower atmosphere through a process called

Back

the Greenhouse Effect

Front

9. Uneven heating of Earth's surface causes warm air to rise at the equator, move toward the poles, sink at 30 degrees as it cools, and return to the equator along the surface.  This movement of air is called a

Back

Hadley convection cell

Front

10. The area of the earth where solar radiation has the lowest angle of incidence is

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the poles

Front

11. Cool, polluted air trapped over a city by a warm air mass is called

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a temperature inversion