River Geomorphic Processes

Question 1

Erosion

Answer 1

Wearing away of the river bed and banks.
Vertical erosion- Downwards
Lateral erosion- Sideways

Question 2

Hydraulic Action

Answer 2

Force of the water hitting the river bed and banks. Air becomes trapped in the cracks and crevices, causing them to break apart

Question 3

Abrasion

Answer 3

Load of the river hits against bed or banks

Question 4

Attrition

Answer 4

Rocks being caried by the river are hit against each other making them smaller and rounder

Question 5

Solution

Answer 5

Slightly acidic river water flows over rocks like limestone and sandstone, dissolving them

Question 6

Suspension

Answer 6

Happens with the lightest sediment, carried by the river and occurs in the lower course

Question 7

Saltation

Answer 7

Large pebbles that are too heavy to flow with the river , so they bounce along the river bed

Question 8

Traction

Answer 8

Large rocks that are too heavy to flow with they river, so roll along the river bank, usually happens in upper course

Answer 9

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Question 10

Deposition

Answer 10

When the river loses its velocity, its sediment is dropped. Happens in shallower areas