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precipitation

Published on Nov 18, 2015

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PRESENTATION OUTLINE

rain

  • drops of water are called rain
  • water evaporates from every water surface on earth
  • and eventually falls back down to the surface
  • you can measure rain with a rain gauge
  • its 0.5-5 mm
Photo by nickwheeleroz

sleet

  • when raindrops fall through a layer of air below 0 degrees
  • as they fall the raindrops freeze into solid particles of ice
  • ice particles smaller than 5 mm in diameter are sleet
  • a hail is bigger than sleet
Photo by Chapendra

freezing rain

  • when raindrops fall as liquid water but freeze
  • and they touch a cold surface it turns into freezing rain
  • when you look at it you see ice
  • the size is always different
Photo by ChaoticMind75

snow

  • snowflakes have an endless number of shaped and patterns
  • they form when watervapor in a cloud is converted directly into ice crystals
  • snowflakes often join together into large clumps of snow
  • snow is measured by using a simple measuring stick or by melting collected snow
  • and then measuring the depth of water it produces
Photo by blmiers2

HAIL

  • its a round pellet of ice larger than 5mm in diameter
  • forms inside of cumulonimbus clouds during thunderstorms
  • hail can cause damage to to crops, buildings, vehicles
  • if you cut it in half you can see layers just like an onion
  • hail is bigger than all the other precipitation

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