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Erosion pt. 1

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Erosion pt. 1
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Öykü Penceresi Metni

  • Slayt: 1
  • Erosion is the process in which water, wind, gravity or ice moves fragments of soil and rock.
  • Gravity
  • Slayt: 2
  • Flowing streams pick up and transport weathered materials by eroding sediments from their banks. The sediment is carried through the following loads: dissolved, suspended, and bed.
  • Dissolved: A load composed of ions in solution. Typically these ions make it all the way to the ocean.
  • Suspended: Solid sediments carried in the stream as it flows. Faster moving streams can carry larger particles.
  • Bed: Particles that are too large to be carried in a suspended load are bumped and pushed along the stream bed. These sediments move intermittently in a movement called saltation.
  • Slayt: 3
  • Waves are essential for building up and breaking down shorelines. As waves approach the shore, the wave refraction can either concentrate or disperse the wave energy. If dispersed, it creates a sand deposit; if concentrated, erosion occurs.
  • Refraction: Waves approaching the shore slow down when it "feels" the bottom in shallow water. This causes the waves to bend and more directly face the shore.
  • It's the combination of strong, steady winds, blowing over a long period and distance, that creates powerful wave energy. It's this wave energy that is responsible for the erosion at the shore.
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