River Erosion

Question 1

How does a river erode its channel?

Answer 1

By Abrasion, Hydraulic Action, Attrition and Solution

Question 2

What is ‘Abrasion’?

Answer 2

Where sand and pebbles are dragged along the river bed, wearing it away

Question 3

What is ‘Hydraulic Action’?

Answer 3

Where fast-flowing water is forced into cracks, breaking up thr bank over time

Question 4

What is ‘Attrition’?

Answer 4

Where rocks and stones wear each other away as they knock together

Question 5

What is ‘Solution’?

Answer 5

Where rocks such as limestone are dissolved in acid rainwater

Question 6

What does a river’s energy allow it to do?

Answer 6

Transport, or carry, boulders and stones downstream. These stones then erode the rivers channel.