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12 Cards in this Set
- Front
- Back
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What do we call the air around us and above us?
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atmosphere
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The atmosphere is made of a mixture of what?
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gases
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Seventy-eight percent of the atmosphere is what?
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nitrogen
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Twenty-one percent of the atmosphere is what?
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oxygen
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What is the push of air against objects in all directions?
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air pressure
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In what part of the atmosphere do satellites orbit?
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exosphere
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In what part of the atmosphere do the auroras (shimmering curtains of light) appear?
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thermosphere
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In what part of the atmosphere do meteors (shooting stars) burn up? This is the coldest layer.
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mesosphere
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In what part of the atmosphere do jets cruise? (Near the bottom of the layer)
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stratosphere
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In what part of the atmosphere does all weather happen?
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troposphere
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As air heats, it does what?
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It rises.
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As air cools, it does what?
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It falls.
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