Precipitation - Research Article from World of Earth Science

This encyclopedia article consists of approximately 8 pages of information about Precipitation.
This section contains 2,131 words
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Precipitation

Precipitation is water in either solid or liquid form that falls from Earth's atmosphere. Major forms of precipitation include rain, snow, and hail. When air is lifted in the atmosphere, it expands and cools. Cool air cannot hold as much water in vapor form as warm air, and the condensation of vapor into droplets or ice crystals may eventually occur. If these droplets or crystals continue to grow to large sizes, they will eventually be heavy enough to fall to the earth's surface.

Precipitation in liquid form includes drizzle and raindrops. Raindrops are on the order of a millimeter (one thousandth of a meter) in radius, while drizzle drops are approximately a tenth of this size. Important solid forms of precipitation include snowflakes and hailstones. Snowflakes are formed by aggregation of solid ice crystals within a cloud, while hailstones involve supercooled water droplets and ice pellets. They are...

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This section contains 2,131 words
(approx. 8 pages at 300 words per page)
Buy the Precipitation Encyclopedia Article
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Precipitation from World of Earth Science. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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