Rivers - Erosion

Question 1

What is attrition?

Answer 1

Rocks that bash together to become smooth/smaller.

Question 2

In the erosion process, what is ‘solution’?

Answer 2

A chemical reaction that dissolves rocks

Question 3

In the erosion process, what is ‘abrasion’?

Answer 3

Rocks hurled at the base of a cliff to break pieces apart or scraped against the banks and bed of a river.

Question 4

In the erosion process, what is ‘Hydraulic Action’?

Answer 4

Water enters cracks in the cliff, or river bank, air compresses, causing the crack to expand.

Question 5

In erosion, what are the 4 types of transportation?

Answer 5

• Solution
• Suspension
• Saltation
• Traction

Question 6

In erosion, what is transportation?

Answer 6

A natural process by which eroded material is carried/transported.

Question 7

In transportation, what is ‘solution’?

Answer 7

Minerals dissolve in water and are carried along.

Question 8

In transportation, what is ‘suspension’?

Answer 8

Sediment is carried along in the flow of the water.

Question 9

In transportation, what is ‘saltation’?

Answer 9

Pebbles that bounce along the sea/river bed.

Question 10

In transportation, what is ‘traction’?

Answer 10

Boulders that roll along a river/sea bed by the force of the flowing water.

Question 11

What are the 4 types of river erosion?

Answer 11

• Attrition
• Solution
• Abrasion
• Hydraulic action