Freeze Thaw - water goes in a crack, freezes, expands and then the rock cracks.
wetting drying - in coastal areas where clay is constantly getting wet and drying cracks appear
Changes in Temperature: heated by the sun, expand. Cold nights contract constant movement causes damage rocks break
Chemical weathering: Acid Rain
Bilogical: plants roots are in rocks they grow forcing the rock apart
Erosion
- attrition - rocks collide as they are transported making them smoother
- abrasion/ corrasion: hurled at cliffs forcing it to break away
- corrosion: dissolved by the natural acid in water
- Hydrolic action: worn away by the force of waves hitting them
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