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30 Cards in this Set
- Front
- Back
What is erosion?
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natural forces move weathered rock and soil
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Agents of erosion
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gravity, waves, running water, wind, glaciers
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The material moved by erosion
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sediment
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Where does deposition occur
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where agents of erosion lay down settlement
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what is true about erosion
a) it pulls things toward earth b) it causes landslides c) causes mass movement d) it is an agent of erosion |
a, b, c, d
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The most destruction kind of mass movement is creep
true or false |
false
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mud flows and slump are especially likely in soils high in clay
true or false |
true
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mass movement includes:
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landslides, mudflows, slump and creep
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explain the relationship among landslides, mudflows, slump and creep
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types of mass movement
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landslide
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rock and soil slide quickly down a steep slope
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mudflow
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a mixture of water, rock and soil move rapidly downhill
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creep
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rock and soil move very slowly downhill
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slump
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rock and soil suddenly slip down a slope all at once
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water running downhill is a major agent of:
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erosion
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water that moves over earth's surface when it rains is called:
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runoff
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other than how people use the land, list 4 factors that determine the amount of runoff in an area
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soil type
land shape presence of vegetation amount of rain |
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more runoff generally means less erosion
true or false |
false
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rill
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water moving in a tiny groove in soil after a rainstorm
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gully
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water moving in a channel after a rainstorm
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stream
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water continually flowing down a slope through its own channel
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river
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water flowing downhill in a large channel
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which form of moving water causes the greatest changes in the shape of the land
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a river - because its the largest form of energy
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unlike gullys, streams rarely:
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dry up
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a large stream is also called:
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river
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how do v-shaped valleys form
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from river erosion
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when does a river develop meanders
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flat plains with easily eroded material
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meander that has been cut off from a river is called
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an oxbow lake
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list 2 landforms created from deposits by rivers
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alluvial fan
delta |
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what is a alluvial fan
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wide sloping fan shaped deposit funnel where a stream leaves a mountain range
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sediments deposited where a river flows into an ocean or lake form a:
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delta
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