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10 Cards in this Set
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- Back
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humidity
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the moisture content of air
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absolute humidity
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the mass of water vapor contained in a certain volume of air
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relative humidity
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a quantity expressing humidity as a percentage of the maximum absolute humidity for that particular temperature
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greenhouse effect
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the process by which certain gases (principally water, carbon dioxide, and methane) trap heat that would otherwise escape the earth and radiate into space
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parts per million (ppm)
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the number of molecules (or atoms) of a substance in a mixture for every one million molecules (or atoms) in that mixture
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What is dry air made up of?
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78% nitrogen and 21% oxygen
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What makes up the majority of the air we inhale and exhale?
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nitrogen
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True or False: Global warming and the greenhouse effect are the same thing.
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False
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global warming
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when the concentration of carbon dioxide and other greenhouse gases increase too much causing the earth to become too warm
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What pollutant gas is a deadly by-product of incomplete combustion?
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carbon monoxide
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