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form main forms of river erosion
Hydraulic action, Attrition, Solution and Abrasion
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Hydraulic action?
the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
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Attrition?
rocks being carried by the river smash together and break into smaller, smoother and rounder particles.
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Abrasion?
rocks carried along by the river wear down the river bed and banks.
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Solution?
soluble particles are dissolved into the river.
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four different river transport processors
Solution,Suspension,Traction and Saltation
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Suspension?
fine light material is carried along in the water.
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Traction?
large boulders and rocks are rolled along the river bed.
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Saltation?
small pebbles and stones are bounced along the river bed.
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Solution?
minerals are dissolved in the water and carried along in solution
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Depositon
When a river loses energy, it will drop or deposit some of the material it is carrying.
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Takes place?
Deposition may take place when a river enters an area of shallow water or when the volume of water decreases - for example, after a flood or during times of drought.
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Most common?
Deposition is common towards the end of a river's journey, at the mouth
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Other cards in this set

Card 2

Front

Hydraulic action?

Back

the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.

Card 3

Front

Attrition?

Back

Preview of the front of card 3

Card 4

Front

Abrasion?

Back

Preview of the front of card 4

Card 5

Front

Solution?

Back

Preview of the front of card 5
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