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D - Science - Unit 6

Unit 6 Vocab - Part 1

TermDefinition
weather the condition of earth's atmosphere at a particular time and place
atmosphere the envelope of gases that surround the planet
ozone a form of oxygen that has 3 oxygen atoms in each molecule instead of the usual 2
water vapor water in the form of a gas
pollutant harmful substances in the air, water or soil
photochemical smog the brown haze that develops in sunny cities
acid rain rain that contains more acid than normal
troposphere the inner, or lowest, layer of atmosphere in which earth's weather occurs
stratosphere the second layer of the atmosphere that contains the ozone layer
mesosphere the middle layer of the atmosphere that protects earth's surface from being hit by most meteoroids
thermosphere the outermost layer of earth's atmosphere
ionosphere the lower layer of the thermosphere
exosphere the outer portion of the thermosphere
tropo- turning or changing
meso- middle
exo- outer
thermo- heat
air pressure gravities push on the layers of air down on the Earth's surface
atom the smallest unit of a chemical element that can exist by itself
Created by: lprinke
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