Erosion

Question 1

Hydraulic action

Answer 1

Where the sheer force of the water erodes the stones, bed and banks of the river

Question 2

Abrasion

Answer 2

Sand and stones scrape the bed and banks like sandpaper and wear them away

Question 3

Solution

Answer 3

Water dissolves soluble minerals from the bed and the banks. This helps to break them up.

Question 4

Attriction

Answer 4

rocks and stones knock together and wear each other away