Coasts

Question 0

What is a destructive wave?

Answer 0

Destructive waves operate in storm conditions are about 5 to 6 metres high. The backwash is strong and there is a lot of erosion.

Question 1

What is a constructive wave?

Answer 1

Constructive waves operate in calm weather and are about a metre high. The swash is strong and erosion is limited. They’re involved with the transport and deposition of material creating landforms.

Question 2

What are the two types of waves?

Answer 2

Constructive and destructive

Question 3

What are the five ways the sea erode the coast?

Answer 3

Hydraulic action 
Corrasion 
Attrition 
Corrosion
Wave pounding

Question 4

What is hydraulic action at coasts?

Answer 4

Lots of sea water crashes against land, and air and water are trapped and compressed in rock surface cracks

Question 5

What is corrasion at coasts

Answer 5

Corrasion is very effective and is caused by broken rock fragments battering the land,cliffs etc. and breaking off pieces of rock

Question 6

What’s is attrition at coasts?

Answer 6

Attrition occurs when rock fragments grind each other down into smaller and smoother pebbles, shingle and finally sand which is later deposited as beaches,etc.

Question 7

What is corrosion at coasts?

Answer 7

Corrosion involves chemical action of sea on rock. If the rock is limestone, it dissolves in the sea water. Some sea salts can also react with certain rocks and cause them to rot

Question 8

What is wave pounding?

Answer 8

Wave pounding is the action of the weight of the pounding waves

Question 9

What does beach nourishment mean?

Answer 9

Beach nourishment is placing more sand on a beach but can cause environmental problems somewhere else and can be expensive

Question 10

What does latitude mean?

Answer 10

The overall temperature decreases and temperature range increases as you go further from the equator because the Suns angle is lower nearer the poles