Atmosphere: Consists of layers of gases, Composed of Nitrogen, Oxygen, Water Vapor, and Carbon Dioxide, Has 5 major layers, Troposphere: Highest density & highest pressure, Virtually all weather occurs here, Only layer to support life, Stratosphere: Ozone layer found near bottom, Air temp increases with higher altitude, Most airplanes fly here (jet stream), Ozone: O3, Absorbs solar radiation, Protects Earth from harmful UV rays, Mesosphere: Middle layer, Meteroids usually burn up in this layer, Air temp decreases with higher altitude (heated by stratosphere), Thermosphere: Aurora Borealis (Northern Lights), Ionosphere - the lower part, Heated most directly by the sun, Exosphere: The outer most layer, Air is very thin (least dense layer), GPS satellites orbit the Earth here,

Atmosphere Layers Review

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