Fluvial Processes

Question 1

Erosion

Answer 1

the process that wears away the river bed and banks. Erosion also breaks up the rocks that are carried by the river.

Question 2

Hydraulic action

Answer 2

This is the sheer power of the water as it smashes against the river banks. Air becomes trapped in the cracks of the river bank and bed, and causes the rock to break apart

Question 3

Abrasion

Answer 3

When pebbles grind along the river bank and bed in a sand-papering effect.

Question 4

Attrition

Answer 4

When rocks that the river is carrying knock against each other. They break apart to become smaller and more rounded

Question 5

Solution

Answer 5

When the water dissolves certain types of rocks, eg limestone

Question 6

Deposition

Answer 6

When the river loses energy, it drops any of the material it has been carrying

Question 7

Causes of deposition

Answer 7

1. shallow water
2. at the end of the river’s journey, at the river’s mouth
   3.when the volume of the water decreases