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Atmosphere

TermDefinition
Atmosphere The mixture of gases that surround Earth.
Ozone A form of oxygen that has three oxygen atoms in each molecule instead of the usual two; it is toxic form of oxygen.
Air Pollution A change to the atmosphere that has harmful effects
Emissions Soild particles and gases released into the air from a smokestack or motor vehicle.
Photochemical Smog A brownish haze that is a mixture formed when nitrogen oxides,hydrocarbons,and other pollutants react with one another in the presence of sunlight.
Temperature Inversion The condition in which a layer of warm air traps polluted air close to Earth's surface.
Acid Rain Rain that is more acidic than normal,caused by the release of molecules of sulfur dioxide and nitrogen oxide into the air.
Chlorofluorocarbons Chlorine compounds formerly used in air conditioners, refrigerators,and spray cans; also called CFCs.
Greenhouse Effect The process by which heat is trapped in the atmosphere by water vapor,carbon dioxido,methane,and other gases that form a blanket around Earth.
Greenhouse Gases Gases in the atmosphere that trap heat.
Global Warming A gradual increase in the temperature of Earth's atmosphere.
Altitude Elevation above sea level.
Troposphere The lowest layer of Earth's atmosphere,where weather occurs.
Stratosphere The second-lowest layer of Earth's atmosphere; the ozone layer is located in the upper stratosphere
Mesosphere The middle layer of Earth's atmosphere; the layer which most meteoroids burn up.
Thermosphere The outermost layer of Earth's atmosphere.
Ionosphere The lower part of the thermosphere,where electrically charged particles called ions are found.
Aurora Borealis A colorful,glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere
Exosphere The outer layer of the thermosphere extending outward into space.
Created by: 3115718
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