River Processes

Question 1

What are the 4 processes of erosion

Answer 1

Hydraulic action, corrasion, attrition, corrosion

Question 2

Define hydraulic action

Answer 2

When the force of the water knocks particles off the sides and the bed of the river

Question 3

Define corrasion

Answer 3

When the sand and stones carried by the river rub against the bank and bed and knock off other particles

Question 4

What is corrasion also known as

Answer 4

Abrasion

Question 5

Define attrition

Answer 5

When boulders and large stones carried by the river collide with each other and break up into smaller pieces

Question 6

Define corrosion

Answer 6

When acids in the river dissolve the rocks that make up the bank and bed

Question 7

What else is corrosion known as

Answer 7

Solution

Question 8

What is transportation

Answer 8

When a river carries load. The more energy in the river the more load that can be carried

Question 9

What is load

Answer 9

Load is boulders, pebbles, sand and silt

Question 10

Explain deposition

Answer 10

Deposition takes place with the largest stones dropped first, then pebbles, sand and smaller particle. Dissolved material may remain in solution and eventually be carried out to sea