Chapter 7

Question 1

What is mass movement

Answer 1

The movement of the loose earth materials eg soil stones and mud

Question 2

What causes mass movement

Answer 2

Slope
Water
Lack of vegetation
People

Question 3

What are the types of mass movement

Answer 3

Slow, soil creep

Fast, landslides cliff falls bogbursts and mudflows

Question 4

What is soil creep

Answer 4

Very slow movement of soil. Moves about 1cm a year (slowest form of movement)

Question 5

What causes soil to move

Answer 5

Water and gravity cause the soil to move slowly downhill

Question 6

Evidence of soil creep

Answer 6

Fences and trees bend downhill
Terracettes are formed
Walls collapse

Question 7

What is a landslide

Answer 7

A rapid movement of loose rock and soil down a sloped

Question 8

What are landslides caused by

Answer 8

Undercutting
Coastal erosion
Earthquakes

Question 9

What are bogbursts

Answer 9

Fast movements of bog downhill

Question 10

What are mudflows

Answer 10

Fast movements of mud downhill

Question 11

What is a lahar

Answer 11

A river of mud

Question 12

What is a lahar caused by

Answer 12

Lava melting snow to create a river of snow