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chapter 15

Earth's Atmosphere

TermDefinition
ozone a form of oxygen that has three oxygen atoms in each molecule instead of two
weather the condition of Earth's atmosphere at a particular time and place
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 (elevation) the distance above sea level
trophosphere the layer of the atmosphere in which Earth's weather occurs
stratosphere the layer of the atmosphere that contains the ozone layer
mesosphere the layer of the atmosphere that protects Earth's surface from being hit by most meteoroids
thermosphere the layer of the atmosphere that extends outward into space
pollutants harmful substances in the air, water or soil
Created by: Science4u
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