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At what point in the river's course does mainly erosion take place?
In the upper course.
1 of 10
How are floodplains and levées created?
They are created by deposition in the lower course.
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Name the features of Attrition.
Attrition is a form of erosion that: makes rough edges of pebbles become smoother and rounder, material gradually becomes smaller, and the material carried by the river collides and breaks into smaller pieces.
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In what type of erosion might the water be slightly acidic?
Solution (corrosion).
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What happens when abrasion/corrasion takes place?
Material in the river rubs against the bed and banks wearing them away. The river also carries material such as sand and pebbles (especially in high flow).
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What is the type of erosion that is especially powerful during floods, and the force of the water removes material from the bed and banks?
Hydraulic power/action.
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What are the different forms of transportation and their features?
Traction - where the material is pushed or rolled along. Saltation - where the material is bounced along. Suspension - where the material is carried along. Solution - where the material is dissolved.
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What is deposition?
Deposition is when the river looses energy and cannot carry as much material. It therefore has to drop some when the river slows down such as on the inside of meanders or where it enters the sea. The river will drop the heaviest material first.
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What features would be found in the middle course of a river, and how would they have been created?
Meanders and Ox Bow lakes created by erosion and deposition.
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What is a waterfall?
A steep drop in the course of a river.
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Other cards in this set

Card 2

Front

How are floodplains and levées created?

Back

They are created by deposition in the lower course.

Card 3

Front

Name the features of Attrition.

Back

Preview of the front of card 3

Card 4

Front

In what type of erosion might the water be slightly acidic?

Back

Preview of the front of card 4

Card 5

Front

What happens when abrasion/corrasion takes place?

Back

Preview of the front of card 5
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