1
Q
Humidity
A
The moisture content of air
2
Q
Absolute Humidity
A
The mass of water vapor contained in a certain volume of air
3
Q
Relative Humidity
A
A quantity expressing humidity as a percentage of the maximum absolute humidity for that particular temperature
4
Q
Greenhouse Effect
A
The process by which certain gasses (principally water, carbon dioxide, and methane) trap heat that would otherwise escape the earth and radiate into space
5
Q
Parts Per Million
A
The number of molecules (or atoms) of a substance in a mixture for every one million molecules (or atoms) in that mixture
Apologia Physical Science
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