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Erosion gravity
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  • 1. Erosional Forces Gravity created by TeachPower.net This lesson is a preview of a full complete lesson and contains animation, sounds, video, and pictures that SlideShare.net does not show. To preview this lesson as it was originally intended please go to http://teachpower.net , click on the Lesson PowerPoints tab at the top, and scroll down until you see the name of this lesson in the appropriate category.
  • 2. Gravity Erosion
    • Gravity is the force that moves rock and other materials downhill.
    • Gravity causes mass movement.
      • Mass movement: any process that causes sediment to move downhill.
    • Different Types of Mass Movement
    • 1) Landslide
      • Most destructive. Occurs when rock and soil quickly slide down a steep slope.
    • 2) Mudslides
      • Mixture of water, rock, soil that moves downhill mostly after heavy rainfall.
    • 3) Slump
      • Mass of rock suddenly slips down a slope. This occurs mostly when water erodes away the bottom of a hill.
    • 4) Creep
      • Very slow downhill movement of rock and soil. Occurs when water freezes and thaws in cracks in the rock underground.
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