The Sea

Question 1

Backwash

Answer 1

When the water runs out of speed it stops and it flows back down the beach towards the sea.

Question 2

Constructive Wave

Answer 2

• have a strong swash = transports and deposites material on the beach
• weak backwash = doesnt carry much material back to sea
• add material to the beach

Question 3

Deconstuctive Waves

Answer 3

• weak swash
• strong backwash = wears away & carries material from the beach
• -> a lot of erosion & destroy/destruct the coastline

Question 4

Hydraulic action

Answer 4

This is the power of the watter hitting the coastline

Question 5

Air compression

Answer 5

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

Question 6

Abrasion

Answer 6

Is the erosion caused by small rocks carried in the sea water hitting against the coastline

Question 7

Attrition

Answer 7

Is the erosion caused by the small stones hitting eachother breacking themselves into smaller pieces

Question 8

Swash

Answer 8

As the wave reaches the shore it breaks and the white foamy water that flows up the shore is called the swash