Coastal Environments

Question 1

What are case studies for erosion?

Answer 1

Isle of Purbeck or Old Harry Rocks

Question 2

What are case studies for Deposition?

Answer 2

Hurst Castle Spit

Chesil Beach Tombolo

Question 3

What are case studies for Sea Level change?

Answer 3

Fjords at Milford Haven, NZ

Question 4

What is a case study for Sand Dunes?

Answer 4

Ainsdale Dunes, Cheshire

Question 5

What are case studies for Land Use opportunities and conflicts?

Answer 5

Bangladesh

Milford Haven

Question 6

What are case studies for management?

Answer 6

Christchurch Bay, Hampshire

Question 7

What is the order of the sand balance?

Answer 7

Dunes
Beach
Sand Bar
Deep Sand

Question 8

What moves sand from beach to sand bar?

Answer 8

Gravity

Question 9

What moves sand from sand bar to deep sand?

Answer 9

Gravity Drift

Question 10

What stops there from being one continuous sand cell for the UK?

Answer 10

Obstructions to longshore drift

Question 11

Name two obstructions to longshore drift

Answer 11

Headlands

River Mouths

Question 12

What is a berm?

Answer 12

Flat-topped ridge which mark upper limit of swash zone at back of beach

Question 13

What is a beach face?

Answer 13

Steepest, sloping part of beach bellow the berm

Question 14

What are two reasons for coastal protection?

Answer 14

Erosion of coast

Flooding of coast

Question 15

What happened at Hallsands?

Answer 15

In 1917 it was destroyed by storms

Question 16

Where is Hallsands?

Answer 16

South Devon

Question 17

How much protection was at Hallsands?

Answer 17

Nothing

Question 18

Define Abrasion

Answer 18

Grinding effect caused by sediment in transport

Question 19

Define Attrition

Answer 19

Erosion caused by sediment hitting other sediment

Question 20

Define Corrosion

Answer 20

Chemical action of stream water

Question 21

Define Longshore Drift

Answer 21

Lateral movement of sand and shingle along beach

Question 22

Name three processes responsible for distinctive coastal landforms

Answer 22

Weathering
Erosion
Transportation

Question 23

How can coasts be protected?

Answer 23

Management

Question 24

Define Erosivity

Answer 24

How powerful the sea is

Question 25

How does quarrying work?

Answer 25

When the impact of masses of water by wave shock dislodges rocks

Question 26

What is another name for quarrying?

Answer 26

Hydraulic Action

Question 27

Where is quarrying likely to take place?

Answer 27

Where there are weak materials such as, clay, sand, gravel are found

Question 28

Other than through water, how else can quarrying work?

Answer 28

Pressure release- where air is trapped in rock joints when waves break on rocks, weakening the rocks allowing them to be eroded

Question 29

Name three ways the coastline can be eroded?

Answer 29

Hydraulic Action
Abrasion
Weathering

Question 30

How does abrasion work?

Answer 30

Breaking waves pick up particles which are thrown against the rock, eroding a notch in the rock face

Question 31

How does solution work?

Answer 31

Chemicals dissolve rocks

Question 32

What material is Old Harry made from?

Answer 32

Chalk

Question 33

Is chalk easily eroded?

Answer 33

No

Question 34

Is sand and clay easily eroded?

Answer 34

Yes

Question 35

Define discordant

Answer 35

Where the rock structure is a 90º angle to the sea

Question 36

How do groynes work?

Answer 36

They stop beaches being destroyed by longshore drift

Question 37

How do sea walls work?

Answer 37

They reflect wave energy back into the sea reducing the amount of energy and erosion hitting the coast

Question 38

How do breakwaters work?

Answer 38

They break the waves, reducing the energy of the wave and as a result the amount of energy hitting the coast

Question 39

Where has a shoreline management plan been implemented?

Answer 39

Christchurch Bay