erosion processes Flashcards
(6 cards)
1
Q
name the four erosion processes
A
hydraulic action, abrasion, attrition and corrosion
2
Q
what is hydraulic action
A
when the force of the water forms cracks into the materials
3
Q
what is attrition
A
when the rocks bang together and pieces break off
4
Q
what is abrasion
A
when rocks break due to the banks and beds of the river
5
Q
corrosion
A
when rocks such as limestone and chalk dissolve into the water
6
Q
deposition
A
takes place when the river slows down and no longer has the energy to carry the material it is transporting so some of it is dropped
