Rivers - Erosion, Transportation and Deposition

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What Is Erosion?
Erosion is the wearing away of the river bed and banks.
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What Is Hydraulic Action?
Hydraulic Action is the force of the water which is moving in the river.
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What Is Abrasion?
Abrasion is when the load scrapes the bed and banks.
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What Is Attrition?
Attrition is when pebbles or rocks smash into each other and break.
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What Is Solution (Erosion)?
Solution is the dissolving of certain types of rock (chalk and limestone) by rain water.
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What is Vertical Erosion?
This deepens the river valley (and channel), making it v-shaped. It is dominant in the upper course of the river.
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What is Lateral Erosion?
This widens the river valley (and channel). It is dominant in the middle and lower courses.
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What are the 6 types of River Erosion?
Hydraulic Action, Abrasion, Attrition, Solution, Vertical and Lateral Erosion.
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What Is Transportation?
Transportation is the movement of material.
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What Is Traction?
Traction is the rolling of material along the river bed.
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What Is Saltation?
Saltation is the bouncing of material along the river bed.
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What Is Suspension?
Suspension is when there are fine materials floating along in the river.
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What Is Solution (Transportation)?
Solution is the dissolving of certain types of rock (chalk and limestone) by rain water.
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What are the 4 types of Transportation?
Traction, Saltation, Suspension and Solution
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What Is Deposition?
Deposition is where the river leaves behind material that it has been carrying.
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What size material is deposited first and why?
It deposits the largest material first because it is the heaviest to carry.
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What conditions cause the river to deposit its load?
When there is a fall in the speed of the water or the amount of water is less.
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Where might these conditions occur?
When the gradient changes at the foot of a mountain or when a river enters a lake of the sea.
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What Is Load?
Load is the material carried by the River.
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Other cards in this set

Card 2

Front

What Is Hydraulic Action?

Back

Hydraulic Action is the force of the water which is moving in the river.

Card 3

Front

What Is Abrasion?

Back

Preview of the front of card 3

Card 4

Front

What Is Attrition?

Back

Preview of the front of card 4

Card 5

Front

What Is Solution (Erosion)?

Back

Preview of the front of card 5
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