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 What force causes sediment movement down a slope?  What might cause a landslide?

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Presentation on theme: " What force causes sediment movement down a slope?  What might cause a landslide?"— Presentation transcript:

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2  What force causes sediment movement down a slope?  What might cause a landslide?

3  Erosion is the process by which natural forces move weathered rock and soil from one place to another.  The material moved by erosion is called sediment.  Gravity moves sediments downhill. Gravity causes mass movement.

4  Gravity  Wind  Running water  Glaciers  Waves  Wind

5  Three types of mass movement are:  Landslides  Mudflows  Slump  Creep

6  The most destructive type of mass movement.  Rock and soil slide quickly down a steep slope.

7  Rapid downhill movement of a mixture of water, rock, and soil.

8  Mass of rock or soil suddenly slips down a slope.  The material slumps down in one large mass.

9  The very slow downhill movement of rock and soil.

10 1. What is creep? Sketch a drawing of it. 2. What is the difference between a landslide and a slump? 3. A fence runs across a steep hillside. The fence is tilted downhill and forms a curve rather than a straight line. What can you infer happened to the fence?


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