Coasts - Erosion and Transport

Question 1

Hydraulic action

Answer 1

• destructive waves crash into cliffs
• compressing water and air into cracks = widening them
• creating high pressure
• very powerful form of erosion

Question 2

Attrition

Answer 2

-shingles and pieces of rock crash into each other
-this causes them to become rounder and smaller
Like pebbles

Question 3

Solution

Answer 3

-acids in seawater dissolve the shingle to become smaller/rounder

Question 4

Abrasion

Answer 4

• very powerful form of erosion
• destructive waves cause rock to be thrown against the cliffs
• this creates cracks and wears the life away
• breaks down the cliff rock/splits it

Question 5

Erosion

Answer 5

The process by which land is lost or worn away due to the action of waves

Question 6

Transport

Answer 6

The movement of material by the waves along the coast

Question 7

Deposition

Answer 7

• waves lose energy and drop sand/shingle they are carrying along the coast
• slowly building up the coast

Question 8

Traction

Answer 8

Large boulders and pebbles are rolled along the seabed

Question 9

Saltation

Answer 9

Small stones and pebbles are bounced along the sea bed

Question 10

Suspension

Answer 10

Fine material is carried by the sea

-eg sand

Question 11

Solution

Answer 11

Dissolved mineral are carried by the sea