Atmosphere flash cards

Term Definition
Atmospere 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 a toxic form of oxygen.
Air pollution A change to the atmosphere that has harmful effects.
Emissions Solid particles and gases released into the air from a smockstack or motor veichle.
Photochemical smog A brownish haze that is a mixture of ozone and other chemicals, 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 thats polluted air close to earth's surface.
Acid rain Rain that is more acidic than normal, caused by release of molecules of sulphur dioxide and nitrogen oxide into the air.
Chlorofluorocarbons Chlorine compounds formerly used in air conditioners,refrigarators and spray cans; also called CFC's.
Greenhouse effect The process by which heat is trapped in the atmosphere by water vapor,carbon dioxide,methane and other gases that form a blsnket around the earth.
Greenhouse gases Gases in the atmosphere that trap heat.
Global warming A gradual increase in the temperature of earth's atmosphere.
Altitude Elavation 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 in which most meteorites 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; also called the northern lights.
Exosphere The outer layer of the thermosphere extending outward into space.

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