The Sea

Question 1

What does the size of the wave depend on

Answer 1

The strength of the wind

The length of the sea (FETCH)

Question 2

What are the 2 types of waves

Answer 2

SWASH

BACKWASH

Question 3

What is the SWASH

Answer 3

As the wave reaches the shore it breaks. This is the SWASH

It is the white foamy water that flows UP towards the beach

Question 4

What is he backwash

Answer 4

The back was is the water that runs out of speed then flows back towards TYE SEA

Question 5

What are constructive waves

COMPOSITION

Answer 5

Strong SWASH- transports and deposits material on beach

WEAK BACKWASH- does not carry much material back to sea

As a result they construct/add material to the beach

DIAGRAM

Question 6

Destructive waves

COMPOSITION

Answer 6

WEAK SWASH

VERY STRONG BACKWASH- wears away and carries away material from beach

Therefore there is a lot of erosion and they destroy/destruct the coastline

Question 7

Sea erosion

Answer 7

Hydraulic action
Air compression
Abrasion
Attrition

Question 8

Hydraulic action

Answer 8

This is the power of the water hitting the coastline

Question 9

Air compression

Answer 9

The waves trap air in cracks in the rocks. As the waves retreat the trapped air expands quickly and can crack the rock

Question 10

Abrasion

Answer 10

This is when small rocks carried in the seas load are hitting against the coastline

Question 11

Attrition

Answer 11

This is when small stones carried in the seas load are hitting against each other breaking themselves into smaller pieces

Question 12

Landforms of sea erosion

Answer 12

Cliffs
Bays and headlands
Sea caves, sea arch,sea stack,sea stump
Blowhole

Question 13

What does the sea carry in its load

Answer 13

Sand
Pebbles
Stones
Mud

Question 14

Landforms of sea deposition

Answer 14

Beaches
Sand dunes
Sand spits
Tombolo
Lagoons

Question 15

How are waves made up

Answer 15

Waves are made up because of the friction between the wind and the surface of he sea

Question 16

What does the sea provide us with

EXPLAINQ

Answer 16

The sea provides us with many things
For example it provides us with energy such as wind and tidal energy. This energy is renewable and good for the planet. It can also provide us with energy such as gas and oil which isn’t renewable and not great for the planet

It can provide us with leisure. For example water sports such as sailing and other leisure activities such as having a picnic and sunbathing

It can be a good transport route to transport people and goods. For example ferries can sail over the sea with passengers and cargo ships can sail over the sea to transport manufacturing goods easily and cheaply

Another thing the sea provides us with is food such as fish and crabs.

Question 17

What are the negative effects of what the sea proviðs us with

Answer 17

The non renewable energy that we use from the sea will eventually run out and it also can cause pollution

When on the beach people having picnics/sunbathing could leave behind rubbish creating not only an eye-sore but can also cause pollution

The sea provides us with food but this food will eventually run out if fish stocks are not managed properly. To prove that this there is conservation boxes which people cannot fish in

Ships transporting goods can pollute the sea by oil spillage s that can also deflect fish stock
S

Question 18

What have people made to control the power of the sea

Answer 18

Gabions
Sea walls
Groynes
Boulders