River Processes

Question 1

hydraulic action

Answer 1

the force of the river against the banks can cause air to get trapped in cracks and the pressure weakens the banks and gradually wears away

Question 2

abrasion

Answer 2

rocks carried along by the river wear down the river bed and banks

Question 3

attrition

Answer 3

rocks being carried by the river get smashed together and break into smaller rounder smoother particles

Question 4

solution

Answer 4

soluble particles dissolve in the river