Weathering

1
What processes are involved in the formation of
natural landscapes?
Erosion
Weathering
These two processes can also work together
2
What is the difference between weathering and
erosion?
Weathering
Erosion
..involves the break up of rocks at the earths
surface by the action of the weather ( changes in
temperature ) chemicals or plants.
..involves wearing down or removal of material by
water, ice or wind, there is a force involved.
Material would then be transported away by these
forces.
3
Weathering
Chemical
Biological
Physical / Mechanical
4
Physical Weathering
Exfoliation
5
Physical Weathering
Freeze-Thaw Action also known as Frost
shattering
2 The water freezes and the crack is made wider.
Repeated over time weakening the rock structure.
1 Water fills a crack in a rock
3 The rock breaks into several pieces
6
Chemical Weathering
7
Erosion
Rivers
Ice
Sea
Wind