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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Solution
Soluble particles are dissolved into the river.
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Abrasion
Rocks carried along by the river wear down the river bed and banks.
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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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Transport Types
Solution, Saltaion, Suspension, Traction
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Solution
Minerals are dissolved in the water and carried along in solution.
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Saltation
Small pebbles and stones are bounced along the river bed.
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Suspension
Fine light material is carried along in the water.
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Traction
Large boulders and rocks are rolled along the river bed.
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Deposition
When a river loses energy, it will drop or deposit some of the material it is carrying.
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Upper Course
Upper course river features include steep-sided V-shaped valleys, interlocking spurs, rapids, waterfalls and gorges.
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Middle Course
Middle course river features include wider, shallower valleys, meanders, and oxbow lakes.
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Lower Course
Lower course river features include wide flat-bottomed valleys, floodplains and deltas.
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Other cards in this set
Card 2
Front
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.
Back
Hydraulic Action
Card 3
Front
Soluble particles are dissolved into the river.
Back
Card 4
Front
Rocks carried along by the river wear down the river bed and banks.
Back
Card 5
Front
Rocks being carried by the river smash together and break into smaller, smoother and rounder particles.
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