2B.4a Beach Ready Flashcards Preview

9GE01 Coasts > 2B.4a Beach Ready > Flashcards

Flashcards in 2B.4a Beach Ready Deck (16)
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1
Q

How was Chesil beach formed?

A

It was formed by marine transgression (sea-level rise)

2
Q

How high is Chesil beach?

A

15m high

3
Q

What is Chesil beach exposed to?

A

It is exposed to the English Channel and North Atlantic Ocean

4
Q

What type of swash do constructive waves have?

A

A strong uninterrupted swash

5
Q

What type of waves constitute a destructive wave?

A

High height, short wavelength

6
Q

What type of waves constitute a constructive wave?

A

Low height, long wavelength

7
Q

What effect does percolation have on a shingle beach?

A

Shingle beaches lead to more percolation, so even less backwash and will lead to a steeper beach

8
Q

What effect does percolation have on a sandy beach?

A

Sandy beaches lead to less percolation, so even a stronger backwash and will lead to more damage

9
Q

What is a wave?

A

It is energy moving through water

10
Q

How do waves move?

A

They move in a circular or elliptical orbit

11
Q

What depends on the size of the waves?

A

Wind strength, wind duration, water depth, wave fetch, wave direction

12
Q

How are waves formed?

A

Wind/water friction is the transfer of energy and it is the force of the wind blowing on the surface that creates the ripples

13
Q

What effect does climate change have on a beach?

A

Climate change causes more storms to occur which brings about destructive waves and changes winter beach profiles

14
Q

How are waves formed?

A

Starts at the seabed / shoreline, friction and water movement occurs, wave length decreases, wave height increases

15
Q

How many constructive waves crash in a minute?

A

6-8 per minute

16
Q

How many destructive waves crash in a minute?

A

13-15 per minute