Yr 9 Key Terms (waves)

Question 1

Coast

Answer 1

The narrow contact zone between the land and sea

Question 2

Waves

Answer 2

The movement of water created by the wind blowing over the sea

Question 3

Erosion

Answer 3

The wearing away and removal of material by the action of waves

Question 4

Transportation

Answer 4

The movement of material by the waves from one place to another

Question 5

Swash

Answer 5

The movement of a wave up the beach

Question 6

Backwash

Answer 6

The movement of a wave back down the beach

Question 7

Constructive waves

Answer 7

Gentle waves that spill onto the beach, carrying material up the beach and building it up

Question 8

Destructive waves

Answer 8

Eroded sediment from a cliff sucked back down the beach by strong waves

Question 9

Abrasion

Answer 9

Occurs when pieces of rock get hurled at cliff faces by the sea

Question 10

Solution

Answer 10

Occurs when soluble materials get dissolved by the sea

Question 11

Hydraulic Action

Answer 11

A type of erosion occurring when waves force air and water into cracks in the rock which exerts pressure thus causing the cracks to enlarge and pieces of the rock to break away

Question 12

Traction

Answer 12

Occurs when large boulders are pushed, pulled or dragged along the seabed

Question 13

Saltation

Answer 13

Occurs when smaller rocks are lifted from the seabed y waves and lower when waves loose their energy

Question 14

Suspension

Answer 14

Occurs when grains of sand, find rocks, or sediment float within the sea

Question 15

Discordant coast

Answer 15

Where the rocks at the coastline are at right angles

Question 16

Longshore drift

Answer 16

The movement of eroded material along the coastline by the movement of the waves

Question 17

Deposition

Answer 17

When the waves drop the material it has been transporting

Question 18

Geology

Answer 18

The type of, and structure of rock in an area