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Watercycle slideshare version

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Transcript

  • 1. The Water Cycle
    Created by Mrs. McColgan
  • 2. The Water Cycle
    Evaporation
    Sun heats water
    Liquid water changes to gas (vapor)
    Watervaporrises
    with warm air
  • 3. Humidity
    Amount of water vapor, or moisture in the air
    Changes with temperature
    Warm air holds more moisture than cold air
    Cold Air
    Warm Air
  • 4. Measuring Humidity
    Hygrometer is used to measure the amount of water vapor in the air.
  • 5. The Water Cycle
    Condensation
    Water vapor cools
    Tiny water droplets or ice crystals form
    Get bigger and heavier
  • 6. The Water Cycle
    Precipitation
    Air can’t hold up heavy water droplets or ice crystals
    They begin to fall
  • 7. The Water Cycle
    All the different forms of water that fall from the sky.
  • 8. Precipitation
    The air temperature determines the form of precipitation.
  • 9. Types of Precipitation
    Rain
    Liquid
    Air temperature above 32 degrees Fahrenheit
    Snow
    Solid
    Air temperature below 32 degrees Fahrenheit
    Hail
    Solid
    Formed in clouds
    Winds carry frozen drops higher
    Layers of ice are added
    Repeats
    Sleet
    Mixture
    Air temperature just above freezing
  • 10. Measuring Precipitation
    Rain gauge
    Open container that collects precipitation
    Scale on side of container shows how much has fallen
  • 11. The Water Cycle
    Runoff
    Water that does not soak into the ground
    Runs downhill into puddles, streams, rivers, or lakes
    Then the whole cycle begins again
  • 12. Review of the Water Cycle
  • 13. Our Thanks to…
    www.google.com