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The Water Cycle

The Water Cycle. http://ga.water.usgs.gov/edu/graphics/watercyclesummary.jpg. What is the Water Cycle?. Controls the distribution of Earth’s water Describes the continuous movement of water on, above and below the surface of the Earth Has no starting point Water is always changing states.

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The Water Cycle

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  1. The Water Cycle http://ga.water.usgs.gov/edu/graphics/watercyclesummary.jpg

  2. What is the Water Cycle? • Controls the distribution of Earth’s water • Describes the continuous movement of water on, above and below the surface of the Earth • Has no starting point • Water is always changing states

  3. Parts of the Water Cycle • Evaporation • Transpiration • Condensation • Precipitation • Infiltration • Surface Runoff • Groundwater • Absorption

  4. Evaporation • Change from liquid to gas (vapor) • Includes vaporization from: • Water surfaces • Land surfaces • Snow fields http://www.kidzone.ws/water/

  5. Transpiration • Water absorbed by plants is evaporated • Water is absorbed through roots • Evaporated from the plant surface (leaves) http://ga.water.usgs.gov/edu/pictures/wctranspirationleafsoil.jpg

  6. Condensation • Change from gas to liquid • Opposite of evaporation • Example of condensation: • Cold glass, hot day http://farm1.static.flickr.com/215/521585824_54ed44d010_m.jpg

  7. Precipitation • Any water falling to Earth’s surface • Examples: • Rain • Snow • Sleet • Hail • Dew • Frost http://farm5.static.flickr.com/4079/4872194918_3a1de0ba90_m.jpg

  8. Infiltration • Ground water soaking into the soil • From the soil: • Soaked up by roots • Becomes ground water http://ga.water.usgs.gov/edu/pictures/wcinfiltration.jpg

  9. Surface Runoff • Precipitation runoff over the landscape • Occurs when: • Water falling on ground > infiltration rate http://ga.water.usgs.gov/edu/pictures/wcrunoff.jpg

  10. Groundwater • Water located below the ground’s surface • Consider this: • Digging in sand close to ocean • Water that appears is groundwater http://ga.water.usgs.gov/edu/pictures/wcgwstoragebeachlores.jpg

  11. Absorption • Roots removing water from soil • Example: • Sponge and water http://farm4.static.flickr.com/3542/3282843423_5ed72e45ac_m.jpg

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