River Erosion Flashcards
1
Q
How does a river erode its channel?
A
By Abrasion, Hydraulic Action, Attrition and Solution
2
Q
What is ‘Abrasion’?
A
Where sand and pebbles are dragged along the river bed, wearing it away
3
Q
What is ‘Hydraulic Action’?
A
Where fast-flowing water is forced into cracks, breaking up thr bank over time
4
Q
What is ‘Attrition’?
A
Where rocks and stones wear each other away as they knock together
5
Q
What is ‘Solution’?
A
Where rocks such as limestone are dissolved in acid rainwater
6
Q
What does a river’s energy allow it to do?
A
Transport, or carry, boulders and stones downstream. These stones then erode the rivers channel.
