- Created by: Booteek1912
- Created on: 27-11-18 21:24
Soloution- minerlas are dissolved in the water and carried along by the river.
Suspension- fine materials are carried along in the water.
Saltation- small rocks/pebbles are bounced along the river bed.
Traction- larger boulders are rolled along the river bed.
Hyrdaulic action- air becomes trapped in the cracks of a rock and causes it to break.
Abrasion- rocks grind along a rock platform, overtime they become smoother.
Attrition- rocks that are being carried knock against each other and become smaller.
Soloution- water dissolves certain types of rocks.
How a waterfall forms:
1. As water flows it erodes the soft rock quicker, this then undercutts the hardrock.
2. As the hard rock is not supported and lef thanging this eventually collapses.
3. The fallen rock drops into the plunge pool and causes more erosion.
4. This process is then repeated and eventually the waterfall moves up stream.
5. Steep sided gorge formes when the waterfall retreats.
How a meander/ ox-bow lake form
1. The river is eroding laterally (side to side)which forms large bends.
2. It then erodes the outide bend and deposits on the inside bend.
3. This erosion narrows the neck of the meander.
4. The river continues in the new bed and the meander is abandoned.
5. New deposition seals off the ends and the cut-off becomes an ox-bow lake.