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10 Cards in this Set
- Front
- Back
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Atmosphere
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A mixture of gases that surrounds Earth.
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What is the most abundant gas in Earth’s atmosphere?
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Nitrogen.
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What is the second most abundant gas in Earth’s atmosphere?
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Oxygen
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What percentage of Earth’s atmosphere is oxygen?
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21%
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What percentage of Earth’s atmosphere is nitrogen?
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78%
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Name three other gases that make up 1% of Earth’s atmosphere.
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1. Argon.
2. Carbon Dioxide 3. Water Vapor |
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Air Pressure
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The measure of the force with which air molecules push on a surface.
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Altitude
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The height of an object or point in relation to sea level or ground level.
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What happens to air pressure as altitude increases and why?
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Air pressure decreases, because you are going higher into the atmosphere and there are fewer air molecules.
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What happens to air temperature in the troposphere?
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Temperature increases with altitude.
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