GCSE Geography- Processes of Erosion and Weathering

Types of Erosion in rivers

Hydraulic action- This is where particles in rivers are broken down and removed by the force of the water hitting against the river banks and the bed. It is also the compression of air in cracks in the rocks that are carried along the river, as the river water gets into these cracks, compressing the air in the cracks, causing them to break apart.

Attrition- This is where the rock particles in the river are smashed together to form smaller, rounder and smoother particles.

Corrosion- This is the chemical reaction between certain types of rock and the river water.
                      e.g. river water often eats through limestone rocks.

Corrasion- This is where particles…