Erosion

Question 1

Hydraulic action

Answer 1

Fast flowing water pushes the air into cracks and the sheer force of this breaks up the channel over time

Question 2

Solution

Answer 2

Water dissolves minerals from the river bed and banks and this helps break up the channel

Question 3

Attrition

Answer 3

Rocks and stones moving along in the water knock together and help to wear each other away

Question 4

Abrasion

Answer 4

Sand and pebbles get dragged along the river bed or knock onto it a they bounce along in the water, wearing away at the channel

Question 5

What can river erosion create?

Answer 5

A v-shaped valley