Coasts - Constructive and Destructive Waves

Question 1

Outline destructive waves.

Answer 1

Destructive waves are mainly responsible for coastal erosion which takes sediment away from beaches.

It has a weak swash
It has a strong backwash
It creates steep beaches
It breaks frequently (10-15 every minute)
It is HIGH in proportion to LENGTH.

Question 2

Outline constructive waves.

Answer 2

Constructive waves

Have a strong swash
Have a weak backwash
Form gentle beaches
Break infrequently (less than 10 a minute)
LONG in proportion to their HEIGHT.