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River Processes Test Revision (Erosion (4 types) (Corrasion (Rocks bang…
River Processes Test Revision
Erosion (4 types)
Corrasion
Rocks bang into the bed and banks
Corrosion
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CHEMICAL BREAKDOWN OF THE BED AND BANKS AS THE WATER DISSOLVES MATERIAL: NORMALLY CARBONIFEROUS ROCKS E-G- LIMESTONE.
Attrition
Rocks banging into each other and then smooth and get less angular
Hydraulic Action
When water is forced into cracks and erodes
The breaking down of material by a moving force
AND TRANSPORT!!!!!!
Transport (4 Types)
Solution
Dissolved particles are floating in the stream
Suspension
Small particles are carried in the stream
Saltation
Medium-sized particles are hopping along the bed of the river
Traction
Large rocks are rolling around the river bed
The picking up of load by a moving force
Depostiton
The laying down of load by a moving force.