Howstuffworks "Atmosphere - Encyclopedia Entry"

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Atmosphere

Atmosphere is a measure of atmospheric pressure. One atmosphere is a pressure 14.696 pounds per square inch of surface. One atmosphere equals 101.325 kilopascals in the metric system. See also Barometer; Boiling point; Pressure.

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Ionosphere, eye ON uh sfeer, is a part of Earth's atmosphere that has many ions (electrically charged atoms and groups of atoms) and free… More>>

Mesosphere, MEHS uh sfeer, is the region of Earth's upper atmosphere in which temperature drops with rising altitude. It lies above the… More>>

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Atmosphere is a measure of atmospheric pressure. One atmosphere is a pressure 14.696 pounds per square inch of surface. One atmosphere equals… More>>

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Air