Glaciers and Rivers
- Created by: aliya.03
- Created on: 29-08-18 17:32
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- Glaciers and Rivers
- RIVERS
- Long profile; used to describe how a river change its height along its course
- Cross profile: an imaginary slice across the river channel and its valley at specific points
- Erosion processes: when a river wears away at the land caused by energy change, happens in the upper course as there is the most amount of energy
- solution: when the river flows over limestone or chalk, rock is slowly dissolved
- abrasion: the load is carried by the river repeatedly hits the river beds or banks
- hydraulic action: the force of water hitting the river bed and banks
- transportation: material being transported by a river, happens in the kiddle course
- suspension: fine, light material is carried across the river
- traction: the large boulders rolling along the river bed
- solution: minerals are dissolved in the water
- saltation: small pebbles and stones bounced
- deposition; the process if which the drops its load, happens in the lower course of the river as there is less energy carrying the load
- landforms
- erosion and deposition
- meanders; bends in the river, natural. inner curve has less energy and material is deposited. outer curve has the most energy where it erodes the bank
- ox bow lake: continued erosion on the outer bend, eventually the material gets deposited and cuts of the meander at the neck
- flood plain: an an area of land with fine sediment
- deposition
- levees: the river bursts during floods and deposits material along the bank
- estuaries: at the mouth of the river it looses energy as they meet the sea, causes them to deposit their load
- erosion
- waterfalls: when a river flows over a hard rock, the soft rock underneath erodes, creating a step with an overhang
- gorges: when a waterfall has retreated upstream it leaves a steep sided valley
- erosion and deposition
- Long profile; used to describe how a river change its height along its course
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- RIVERS
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