Rivers Definitions

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  • Created by: ryanh2197
  • Created on: 22-01-14 11:40
Abrasion/Corrasion
The load of the river rubs away at the bed + banks of the channel – a process like sand blasting. The greater the load, the faster the river. In the upper course where the load is sharper and larger, it can be very effective.
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Attrition
As the load travels downstream it knocks against itself. The load (pebbles, gravel etc.) becomes smaller and rounder.
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Hydraulic action
The force of the water on the bed and banks can remove material. Effective in upper course (waterfall) and in the middle and lower course, outside of meanders (sand and ground is easily eroded)
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Corrosion
Action of acidic water to dissolve minerals, very effective in upper course (peaty soils) and where we have limestone or chalk. Dissolved material is not deposited.
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Baseflow
Water moving slowly through the ground.
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Other cards in this set

Card 2

Front

As the load travels downstream it knocks against itself. The load (pebbles, gravel etc.) becomes smaller and rounder.

Back

Attrition

Card 3

Front

The force of the water on the bed and banks can remove material. Effective in upper course (waterfall) and in the middle and lower course, outside of meanders (sand and ground is easily eroded)

Back

Preview of the back of card 3

Card 4

Front

Action of acidic water to dissolve minerals, very effective in upper course (peaty soils) and where we have limestone or chalk. Dissolved material is not deposited.

Back

Preview of the back of card 4

Card 5

Front

Water moving slowly through the ground.

Back

Preview of the back of card 5

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