Geography Chapter 5

Geography Chapter 5 - Chapter 5 Notes Factors Influencing...

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World Geography Factors Influencing Atmospheric Pressure - Ideal Gas Law o Pressure is proportional to density and temperature o Pressure is inversely proportional to volume - Density o Density increase -> pressure increase o Density decrease -> pressure decrease Temperature and Pressure - Heated air molecules -> more agitated o Increase in temp. -> increase in pressure o Decrease in temp. -> decrease in pressure Dynamic Influences on Air Pressure - Dynamic: o Dynamic high (strongly descending air) o Dynamic low (strongly ascending air) - Thermal: o Thermal high (very cold air) o Thermal low (very hot air) Mapping Pressure: - Barometer - Millibar o Average sea-level pressure is 1,103.25 millibars - Isobar - High Pressure o Associated with clean conditions - Low Pressure o Associated with cloudy conditions - Ridge - Trough - Pressure Gradient Wind The Nature of Wind - Wind (Movement from side to side) (Named from where it comes from) - Small-scale vertical motions: o Updrafts and downdrafts - Large-scale vertical motions: o
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This note was uploaded on 11/23/2011 for the course GEOG 1114 taught by Professor ? during the Fall '08 term at Oklahoma State.

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Geography Chapter 5 - Chapter 5 Notes Factors Influencing...

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