Coasts Mid Unit

Question 1

What types of erosion is there?

Answer 1

.Attrition
.Solution
.Abrasion
.Hydraulic Action

Question 2

What is attrition?

Answer 2

Rocks that bash together to become smoother/smaller

Question 3

What is solution?

Answer 3

A chemical reaction dissolving rocks

Question 4

What is abrasion?

Answer 4

Rocks hurdled at the base of a cliff to break pieces off

Question 5

What is hydraulic action?

Answer 5

Water enters cracks in the cliff, air compresses causing the cracks to expand.

Question 6

How is a sand dune formed?

Answer 6

The sea brings sediment to the beach and the wind redistributes the sediment, obstacles cause the sediment to deposit and forms the embryo dune.

Question 7

2 types of soft engineering?

Answer 7

Beach nourishment
Dune Regeneration

Question 8

Positives of soft engineering?

Answer 8

Less expensive
Doesn’t disrupt nature

Question 9

Negatives of soft engineering?

Answer 9

Less effective
Takes time

Question 10

2 types of hard engineering?

Answer 10

Sea wall
Groynes

Question 11

Positives of hard engineering

Answer 11

Very effective
Reliable

Question 12

Negatives of hard engineering

Answer 12

Expensive
Affects nature