Rivers Erode

Question 1

Erosion

Answer 1

Erosion is the wearing away of materials by natural forces such as wind or water. Rivers erode in 4 ways

Question 2

Abrasion

Answer 2

Sand and stones in the river scrape the bed and bank, and wear them away

Question 3

Attrition

Answer 3

Rocks and stones knock together and wear each other away

Question 4

Hydraulic action

Answer 4

Fast flowing water is forced into cracks

Question 5

Solution

Answer 5

Water also dissolves soluble minerals from the bed and banks

Question 6

Solution

Answer 6

Dissolved material is carried along as solution

Question 7

Suspension

Answer 7

Small light particles of rock and soil are carried along as suspension

Question 8

Traction

Answer 8

Larger stones and rocks get rolled along during periods of flood

Question 9

Solution,suspension,saltation, traction

Answer 9

Least energy——————————>most energy

Question 10

Deposited

Answer 10

When it reaches flatter land,the river slows down. It no longer has the energy to carry its load,so it deposits it. The deposited material is called sediment