Revision 4.3b

Question 1

What three factors affect wave energy

Answer 1

Season
Wind strengths
Lunar tides

Question 2

Where in the uk are the biggest waves

Answer 2

The biggest waves are found in the SW because is has a long fetch and the wind has traveled over a longer distance so it can pick up more energy to produce bigger waves

Question 3

Compare constructive and destructive waves.

Answer 3

Constructive Destructive
Long wave length Short wave length
Low freq High freq
Strong swash Weak swash
Weak backwash Strong backwash
Depositional Erosion

Question 4

Rotational slumping

Answer 4

Rotational slumping breaks down a cliff by water accumulating at the boundary between sand and clay. Clay, being impermeable, prevents water going through it and sand, being permeable, allows water to go through it until it becomes saturated. Once the sand is saturated it topples over the clay into the water making the cliff smaller.

Question 5

Abrasion

Answer 5

Abrasion is the process of loose rock being thrown against a cliff. This slowly erodes the cliff