Transcription of Atmospheric Pressure, Winds, and Circulation …
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Atmospheric Pressure, Winds, and Circulation …
113 Atmospheric Pressure, Winds, and Circulation Patterns A n individual gas molecule weighs almost nothing; however, the atmosphere as a whole has considerable weight and exerts an average pressure of 1034 grams per square centimeter ( lb/sq in.) on Earth s surface. The reason why people are not crushed by this Atmospheric pressure is that we have air and water inside us in our blood, tissues, and cells exerting an equal outward pressure that balances the inward pressure of the atmosphere. Atmospheric pressure is important because variation in pressure within the Earth atmosphere system creates our Atmospheric Circulation and thus plays a major role in determining our weather and climate. It is the differences in Atmospheric pressure that create our winds. Further, the movement of the winds drives our ocean currents, and thus Atmospheric pressure works its way into several of Earth s 1643, Evangelista Torricelli, a student of Galileo, performed an experiment that was the basis for the invention of the mercury barometer, an instrument that measures Atmospheric (also called barometric) pressure.
113 Atmospheric Pressure, Winds, and Circulation Patterns A n individual gas molecule weighs almost nothing; however, the atmosphere as a whole has
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