Term
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Definition
| layer of gases that surrounds a planet |
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Term
| Where did the oxygen in the atmosphere come from? |
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Definition
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Term
| What is the atmosphere made of? |
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Definition
1.Nitrogen (78%)
2.Oxygen (21%)
3.Water vapor, carbon dioxide (1%) |
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Term
| What percent of the atmosphere is nitrogen? |
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Definition
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Term
| What percent of the atmosphere is oxygen? |
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Definition
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Term
| What percent of the atmosphere is water vapor/ carbon dioxide? |
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Definition
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Term
| What are the four reasons why the atmosphere is important to us? |
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Definition
1.Provides us with oxygen
2.Stabilizes surface temperature (traps solar heat)
3.Protects us from meteors (they burn up)
4.Ozone layer protects us from harmful rays (UV- ultraviolet light) |
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Term
| What are the layers of the atmosphere? |
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Definition
| troposphere, stratosphere, mesosphere, thermosphere, exosphere |
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Term
| What layer of the atmosphere do we live in? |
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Definition
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Term
| How do you know when you have entered a different layer of the atmosphere? |
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Definition
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Term
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Definition
| pressure caused by air molecules above |
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Term
| Where is air pressure greatest? |
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Definition
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Term
| What are two functions of the ozone layer? |
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Definition
-ozone (O3) layer protects us against UV rays
-absorbs energy from UV rays |
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Term
| What destroys the ozone layer? |
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Definition
| chlorofluorocarbon (CFCs) |
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Term
| Where can you find CFCs/ what are they? |
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Definition
| chemicals from aerosol sprays, refrigerators, and air conditioning units |
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Term
| Where is an ozone hole forming? |
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Definition
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Term
True/False
Some governments have banned CFCs. |
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Definition
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