Erosion and Transportation

Question 1

What is erosion

Answer 1

The gradual removal of rock from river banks or bed

Question 2

4 types of erosion

Answer 2

• CorrAsion/Abrasion
• Attrition
• Solution/CorrOsion
• Hydraulic Action

Question 3

CorrAsion/Abrasion

Answer 3

Bed/Banks worn down by the rivers load when they are thrown at the banks/bed at high velocity

Question 4

Attrition

Answer 4

When materials carried by the river hit each other and are Smoothed/Broken down into smaller particles

Question 5

Solution/CorrOsion

Answer 5

Chemicals in the rivers water dissolve the rock of the rivers banks and bed

Question 6

Hydraulic Action

Answer 6

Water hitting the banks and bed at high velocity thus breaking them down

Question 7

Lateral Erosion

Answer 7

Erosion to the banks (Sideways) of the river, making it wider

Question 8

Vertical Erosion

Answer 8

The eroding of the river bed making the river deeper

Question 9

4 factors effecting a rivers Erosion

Answer 9

• Gradient of the river<> A steep gradient allows gravity to act on the water pulling it into the rock faster and harder.
• Rock Resistance<> Softer rocks erode faster than harder rocks.
• Velocity<> The higher the rivers velocity, the more sediment can be carried and therefore erosion occurs more often.
• Discharge<> The higher the discharge, the more power the water has.

Question 10

Landforms created by Erosion

Answer 10

• V Shaped Valley
• Waterfalls and Gorges
• Meanders
• Ox Bow lakes
• Interlocking spurs

Question 11

Capacity

Answer 11

Maximum load a river can carry at one moment in time (overall mass of the load)

Question 12

Competence

Answer 12

Largest material a river can carry/move

Question 13

4 types of Transportation

Answer 13

• Solution
• Suspension
• Saltation
• Traction

Question 14

Solution

Answer 14

Minerals dissolved in the water and carried along as a solution

Question 15

Suspension

Answer 15

Fine, light materials carried along in clouds in water

Question 16

Saltation

Answer 16

Small pebbles and stones bouncing along the river bed

Question 17

Traction

Answer 17

Larger boulders and rocks that are rolled along the river bed