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physical science l2

physical science lesson 2 definitions

QuestionAnswer
humidity the moisture content of air
absolute humidity the mass of water vapor contained in a certain volume of air
relative humidity the ratio of the mass of water in the air at a given temperature to the maximum mass of water vapor the air could hold at the temperature, expressed as a percentage
greenhouse effect the process by which certain gases (principally water vapor, carbon dioxide, and methane) trap heat that radiates from earth
parts per million the number of molecules (or atoms) of a substance in a mixture for every 1 million molecules (or atoms) in that mixture
Created by: jon.vries98
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