River valley
- Created by: c.low
- Created on: 05-05-15 13:49
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- Erosion
- Hydraulic action
- water breaks down rock particles
- Water on the land
- Transport
- Traction
- Large particles are carried along
- Saltation
- Pebble sized particles are carried along
- Suspension
- Small particles are carried along
- Solution
- Materials dissolve in water, carried along
- Traction
- Deposition
- 1. River drops eroded material
- 2. Happens when river slows down (velocity)
- 3. Reasons: volume falls, eroded material increases, shallow water, reaches mouth
- 2. Happens when river slows down (velocity)
- 1. River drops eroded material
- River Valley
- Lower
- Very wide, almost flat, deep channel
- Middle
- Gently sloping, wider sides, deeper channel
- Upper
- Steep,narrow, shallow channel
- Lower
- Transport
- Abrasion
- Rock rub against the channel, wearing it away
- Attrition
- Rocks smash against each other into smaller fragments
- Solution
- Water dissolves some types of rocks e.g. chalk
- Hydraulic action
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