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Transcript 
Earth Science Week

http://www.earthsciweek.org/whatises
w/index.html
Mass Movement
Changing Earth’s Surface
Review



Weathering
Erosion
Soils
Cycle of Erosion and
Deposition


What is a cycle? What are some
cycles?
Deposition – the agents of erosion
deposit sediment
– Sediment – material moved by erosion
Cycle of Erosion and
Deposition

The cycle that wears down and builds
up Earth’s surface.
5 Agents of Erosion



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Gravity
Running water
Glaciers
Waves
Winds
Mass Movement


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One of several processes that move
sediment downhill.
Can be very fast or very slow
Gravity!!!
Mass Movement



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Landslide
Mudflow
Slump
Creep
http://www.youtube.com/watch?v=mk
nStAMia0Q
Landslides


Most destructive
Rock and soil slide quickly down a
steep slope
Mudflows


Rapid downhill movement of a mixture
of water, rock, and soil.
Occur after heavy rains in a normally
dry area.
Slump




Stand up straight, arms at your side
Slump your shoulders
What happened?
A mass of rock and soil suddenly slips
down a slope.
Slump


This is different from a land slide
The material moves down in a large
mass.
Creep

You tell me!!
Creep


The very slow downhill movement of
rock and soil
Can occur on any slope

http://videos.howstuffworks.com/hsw/
11857-land-and-water-weatheringand-erosion-video.htm
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