1. Where does the land end?
Tuesday, 30 July 2019

2. Tuesday, 30 July 2019
Where does the UK end?
To be able to describe the characteristics of coastal environments
To know the characteristics of constructive and destructive waves.

3. Tuesday, 30 July 2019
Discuss with your partner what you think the definition of a coastline is.
Coastlines are the boundary between the land and the sea. They are dynamic, changing environments.

4. What creates a coastline?
Tuesday, 30 July 2019
What creates a coastline?
Waves are formed by the wind blowing over the sea. Friction with the surface of the water causes ripples to form and these develop into waves. The distance the wind blows across the water is called the fetch. The longer the fetch the more powerful the wave.
The highest part of the wave is called the crest and the base of a wave is called the trough. Wave height is the vertical distance from trough to crest whilst wave length is the distance between two wave crests.
Make your own copy of the diagram showing the structure of waves.
Fetch
Powerful
Friction
Waves
Crest
Trough
Height
Length
Wind

5. Tuesday, 30 July 2019

6. Constructive v’s Destructive
Tuesday, 30 July 2019
Constructive v’s Destructive
Wave characteristic
Constructive wave
Destructive wave
Wave height
Wave length
Frequency
Type of wave break (spilling or plunging)
Strength of swash
Strength of backwash
Net beach sediment (gain or loss)
Energy

7. Tuesday, 30 July 2019

8. Gain- builds up beaches
Tuesday, 30 July 2019
Types of wave
Wave characteristic
Constructive wave
Destructive wave
Wave height
Low- less than 1m
High- over 1 m
Wave length
Long wave length
Short wave length
Frequency
8-10 per minute
10-14 per minute
Type of wave break (spilling or plunging)
Spilling
Plunging
Strength of swash
Strong
Weak
Strength of backwash
Net beach sediment (gain or loss)
Gain- builds up beaches
Loss- removes beaches
Energy
Low
High

9. Geogo-ball! One person says a key term and throws it to someone else.
Tuesday, 30 July 2019
Geogo-ball!
One person says a key term and throws it to someone else.
They say the definition
They then say another key term and throw it to someone else to answer.
You can sit down if you get it right