Erosion And Transportation Procceses Flashcards
What is erosion?
The wearing away of rock using movement. Their are 4 types of erosion
What is solution
Where the soluble rocks are dissolved by the water (limestone and chalk in particular) then transported
What is attrition
Where the pieces of rock or material are hit against one another. This causes them to break apart and become smaller and rounded.
What is abrasion?
Where pieces of rock are picked up by the river or sea water and hit against the bed or banks
What is hydraulic action?
Where the force of the water hits against the river or sea bed and banks
What’s the process of transportation ?
Solution, suspension, saltation, traction (not in order)
What is suspension?
Is where the silt and sand particles are held in water (but not dissolved) then transported along with the water
What is saltation?
Where small sand and gravel particles bounce along the river or sea bed. (Travels the direction of water flow)
What is traction?
Where large rocks or large particles are dragged along the river bed by the current.
What is deposition
When the sediment that a river is transporting is dropped. This happens in the middle and lower causes of the river and in lower energy conditions.
