Rivers 2
- Created by: ychen485
- Created on: 29-09-16 17:20
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- Rivers
- The Long Profile of a River
- Upper Course
- Gradient
- steep
- Depth of the river
- shallow
- Width of the river
- narrow
- Average speed of the water
- slow
- Discharge
- low
- Load size
- big
- Gradient
- Lower Course
- Gradient
- gentle
- Depth of the river
- deep
- Width of the river
- wide
- Average speed of the water
- fast
- Discharge
- high
- Load size
- mostly rounded
- Gradient
- Upper Course
- River Processes
- Erosion
- the wearing away of rock and soil found along the river bed and banks
- it also involves the breaking down of the rock particles being carried downstream by the river
- The four main forms of river erosion
- 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
- the force of the river against the banks can cause air to be trapped in cracks and crevices
- Abrasion
- rocks carried along by the river wear down the river bed and banks
- Attrition
- rocks being carried by the river smash together and break into smaller, smoother and rounder paticles
- Solution
- soluble particles are dissolved into the river
- Hydraulic Action
- the wearing away of rock and soil found along the river bed and banks
- Transport
- rivers pick up and carry material as they flow downstream
- The four different river transport processes
- Solution
- minerals are dissolved in the water and carried along in solution
- Suspension
- fine light material is carried along in the water
- Saltation
- small pebbles and stones are bounced along the river bed
- Traction
- large boulders and rocks are rolled along the river bed
- Solution
- Erosion
- The Long Profile of a River
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