7 terms

Module #2 Phisical Science Vocabulary

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Humidity
The moisture content of air
Absolute Humidity
The mass content of water vapor contained in a certain volume of air
Relative humidity
The ratio of mass water vapor in air at a given temperature to the maximum mass of water vapor the air hold at that temperature, expressed as a percentage
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
combustion
another word for burning
green house effect
the process by which certain gasses ( principly water vapor, carbon dioxcide, and methane) trap heat that radiated from earth
global warming
if the concentration of carbon dioxcide (and other green house gases) increases to much, the effects are called