Coasts

Question 1

What are the 2 different types of waves ?

Answer 1

• destructive waves

- constructive waves

Question 2

What are the factors of destructive waves?

Answer 2

• weak swash
• strong backwash
• steep high waves that are close together
• come into the coast quickly
• create a steep beach

Question 3

What are the factors of constructive waves?

Answer 3

• strong swash
• weak backwash
• low waves
• gentle beach
• more gently sloping with longer gap between them

Question 4

What are the four types of erosion?

Answer 4

• Hydraulic action
• abrasion
• attrition
• solution

Question 5

What are the four types of transportation ?

Answer 5

• suspension
• solution
• saltation
• traction

Question 6

Define hydraulic action

Answer 6

Water is forced into the crack in the rock . Is compressed and forces the rock apart

Question 7

Define abrasion

Answer 7

Loose rocks are thrown agains the cliff wearing away at the rock like sandpaper

Question 8

Define attrition

Answer 8

Loose rocks are swirled around and are worn in Smaller , rounder pieces

Question 9

Define solution

Answer 9

Seawater dissolves material from the rock

Question 10

Define suspension

Answer 10

fine sediment is carried along in suspension in the water

Question 11

Define traction

Answer 11

Large pebbles and cobbles are rolled along the seabed

Question 12

Define saltation

Answer 12

Small pebbles are moved when on pebbles hits another causing it to bounce

Question 13

What is longshore drift?

Answer 13

Longshore drift transports sediment among the beach in a zig zag route