Physical Landscapes In The UK: River Landscapes In The UK - River Erosion

Question 1

Attrition

Answer 1

When stones carried by the river knock against each other, making the stones smaller and more rounded.

Question 2

Hydraulic action

Answer 2

The force of the water hitting the riverbed and banks.

Question 3

Abrasion

Answer 3

When the load carried by the river repeatedly hits the bed and banks dislodging particles into the flow of the river.

Question 4

Solution

Answer 4

When the river flows over limestone or chalk, the rock is slowly dissolved.