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Geog Revision River Landforms > Transportation > Flashcards

Flashcards in Transportation Deck (10)
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1

What are the 4 transportation methods

Traction, saltation, suspension and solution

2

What is traction

Large stones or boulders rolled along the river bed by water moving downstream.

3

When does traction occur

When there is high discharge

4

What is saltation

Small stones bounce or leapfrog along the channel bed

5

When does saltation occur

When there is high energy conditions

6

What is suspension

Small particles of sand and silt are carried along by the flow of the river (held up by the turbulence)

7

What is solution

Dissolved materials are transported within the mass of the moving water

8

What is the capacity of a river

The amount of material a river can carry (the total load volume)

9

What is competence

The diameter of the largest particle that it can carry for a given velocity

10

Where does a river obtain its load

Either from material washed or fallen in; or material eroded from the bed and banks