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Earth science ch 15

4/23/14

QuestionAnswer
stratosphere includes ozone
mesosphere protects earth from most meteoroids
thermosphere 4th layer;18,000 degrees C*
density the amount of mass in a given volume of air
troposphere where earths weather occurs
pressure the force pushing on an area or surface
air pressure the result of the weight of a column of air; pushing down on an area
barometer an instrument that is used to measure air pressure
altitude the distance above sea level the average level of the surface of the oceans
pollutants harmful substances in the air, water, or soil
human activities that contribute to pollution farming, construction, and the burning of fossil feuls
photochemical smog the brown haze that develops in sunny cities; a brownish mixture of ozone and other pollutants
weather the condition of earths atmosphere at a particular time and place
earths atmosphere the envelope of gases that surround the planet
what is earths atmosphere made up of nitrogen
most abundant gas in the atmosphere nitrogen
percentage of oxygen that makes up the atmosphere 21%
ozone a form of oxygen that has 3 oxygen atoms in each molecule rather than usual 2
Created by: Tangee0913
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