Earth's Atmosphere and Its Seasons
Composition of the Atmosphere Worksheet

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Name:_____________________________________________________



  1. What does the atmosphere protect Earth's surface from?

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  2. The atmosphere protects living things from:

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  3. What is air?

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  4. Air's composition is uniform from Earth's surface up to __________________  kilometers.


  5. What are the three main gases that make up the atmosphere? (List in order of abundance)

    ___________________________     ___________________________     ___________________________


  6. Of the five remaining gases, which one is the most important in the heating of our atmosphere?

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  7. What is the most important variable component of air?

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  8. What do clouds consist of?

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  9. Name the three reasons why water vapor is important?

    1. ___________________________________________________________________________________________

    2. ___________________________________________________________________________________________

    3. ___________________________________________________________________________________________


  10. What are aerosols?

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  11. Name two natural causes of aerosols.

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  12. Name two human sources of aerosols.

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  13. What do aerosols help to form in the atmosphere?

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  14. Aerosols can reduce the amount of sunlight reaching Earth's surface by   _____________________________ ,

    _____________________________ ,   and    _____________________________   incoming solar energy.