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Geography 1st & 2nd Year > The Sea > Flashcards

Flashcards in The Sea Deck (8):
1

Backwash

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

2

Constructive Wave

-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

3

Deconstuctive Waves

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

4

Hydraulic action

This is the power of the watter hitting the coastline

5

Air compression

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

6

Abrasion

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

7

Attrition

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

8

Swash

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