Water on the land revision

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Hydraulic Action
The force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
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Attrition
Rocks being carried by the river smash together and break into smaller, smoother and rounder particles.
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Abrasion
Rocks carried along by the river wear down the river bed and banks.
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Solution
Soluble particles are dissolved into the river.
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Suspension
Fine light material is carried along in the water.
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Saltation
Small pebbles and stones are bounced along the river bed.
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Traction
Large boulders and rocks are rolled along the river bed.
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Meanders
Bends in the river, found in the middle course
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Oxbow Lake
The outside bends move closer together as the meander neck becomes narrower. This is a swan’s neck meander and as the process continues, the meanders move closer and closer together. When there is a very high discharge, the river cuts across the neck
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Levees
A levee is a natural embankment along the banks of a river.
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Hard Engineering
Building structures as a defence against flooding. This will often lower the effects or the likelihood of flooding
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Soft Engineering
Letting nature take its course, adapting to floods and using natural processes to help deal with the heavy rainfall. Soft engineering strategies include giving out flood warnings, preparing for future flooding, floodplain zoning and doing nothing.
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Other cards in this set

Card 2

Front

Rocks being carried by the river smash together and break into smaller, smoother and rounder particles.

Back

Attrition

Card 3

Front

Rocks carried along by the river wear down the river bed and banks.

Back

Preview of the back of card 3

Card 4

Front

Soluble particles are dissolved into the river.

Back

Preview of the back of card 4

Card 5

Front

Fine light material is carried along in the water.

Back

Preview of the back of card 5
View more cards

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