Erosion, Transportation And Deposition Flashcards Preview

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Flashcards in Erosion, Transportation And Deposition Deck (14):
0

How many erosion processes are there?

4

1

Hydraulic action

Force of water breaks rock particles away from river channel

2

Corrasion

Eroded rocks picked up by river scrape and rub against channel, wearing it away

3

Attrition

Eroded rocks picked up by river smash into each other, break into smaller bits. Edges get rounded off as they rub together

4

Corrosion

River water dissolves some types of rock

5

Transportation is...

The movement of eroded material

6

What are the 4 processes of transportation?

Traction, saltation, suspension and solution

7

What is traction?

Large particles (boulders) pushed along river bed by water

8

What is saltation?

Pebble-sized particles are bounced along river bed by water

9

What is suspension?

Small particles are carried along by water

10

What is solution?

Soluble materials dissolved in water and are carried along

11

Deposition is...

When a river drops eroded material

12

When deposition occur?

When a river slows down (loses velocity)

13

What are the reasons for rivers slowing down and depositing material?

Volume of water in river falls
Amount of eroded material in water increases
Water is shallower
River reaches its mouth