River Processes

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  • Created by: Laura
  • Created on: 11-10-13 10:21
Erosion
The break up of rocks by the action of rock particles being moved over the Earth's surface by water, wind and ice.
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Abrasion
The scraping, scouring and rubbing action of materials carried along by a river.
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Hydraulic Action
Caused by sheer power of moving water. Air in cracks has pressure and shatters in the rock.
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Corrosion
Minerals in the rock are dissolved by weaak acids in the river water and carried away in solution.
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Attrition
When the stones hit each other in the water and break up.
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Transportation
The movement of particles from the place they were eroded to the place where they are deposited.
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Traction
Large stones and boulders are rolled along the river bed by water moving downstream (this is only at high times of discharge)
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Saltation
Small stones bounce or leap-frog along the channel bed.
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Suspension
Very small particles of sand and silt are carried along by the flow of the river.
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Solution
Dissolved minerals are transported within the mass of the moving water.
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Deposition
The laying down of solid material, in the form of sediment, on the bed of a river or on the sea floor due to the river having no energy to transport it.
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Other cards in this set

Card 2

Front

The scraping, scouring and rubbing action of materials carried along by a river.

Back

Abrasion

Card 3

Front

Caused by sheer power of moving water. Air in cracks has pressure and shatters in the rock.

Back

Preview of the back of card 3

Card 4

Front

Minerals in the rock are dissolved by weaak acids in the river water and carried away in solution.

Back

Preview of the back of card 4

Card 5

Front

When the stones hit each other in the water and break up.

Back

Preview of the back of card 5
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