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Slide 1

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By Ellie Hobbs
GCSE Geography Unit 1 (AQA)
Question 7 ­ The Coastal Zone
Tip: for top marks, try and
ensure you use a case study
for as many questions as
possible!…read more

Slide 2

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Constructive Waves
Constructive waves:
Are shorter than they are longer
Have a long wavelength
Have a small wave height
Have a low frequency
Have a greater swash than backwash
Deposition is
Than erosion!…read more

Slide 3

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De-Structive Waves
De-structive waves:
Are longer than they are shorter
Have a short wavelength
Have a large wave height
Have a high frequency
Have a greater backwash than swash
Erosion is greater
Than deposition!…read more

Slide 4

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Processes of Erosion
Hydraulic Action:
Waves crash against cliff face and compresses air into the cracks, putting pressure on
the rock in which the rock eventually cracks.
De-structive waves hurl pebbles and other material at the cliff face which remove
small particles from the cliff.
Eroded particles in the water smash into each other and break into smaller fragments
and are smooth and rounded.
Weak carbonic acid in the sea water dissolves rock such as chalk and limestone.…read more

Slide 5

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Processes of Transportation
Large boulders are pushed along the sea bed by the force of the water.
Pebble sized particles are bounced along the sea bed by the force of the water.
Small particles like silt and clay are carried along in the water column.
Soluble materials dissolve in the water and are carried along by the sea.…read more

Slide 6

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Coastal Weathering
Freeze-Thaw Weathering:
Occurs when temperatures alternate above and below 0°C , and water gets into a rock
with cracks e.g. Granite. When the water freezes the rock expands by 9% which
puts pressure on the rock. When the water thaws it contracts and the pressure on
the rock is released. Repeated freezing and thawing widens the crack and causes
the rock to break up.
Chemical Weathering:
When the coastline comes in contact with acid from the rain and salt from the
seawater it creates carbonic acid which then causes the rock to react with it results
in rocks breaking down.…read more

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Exactly what I needed!



spelling needs to be better!!!



amazing resource which covers the whole unit pls do this for all the other units 

Mr A Gibson


WOW - a really, really good resource. It covers everything from processes to case studies around the world in over 30 slides which are easy to read and factual. I would recommend this on your mobile device for looking at regularly to give you a really good insight into this area of the specification.



This was an incredible resource which covered all the information from the unit. It was so much easier to make a mind map from, rather than sifting through my own notes and my revision guide. Thank you for making this invaluable resource!

Splash Heslin


Really really good!

Ronan Ingram





this is the best resource I have seen in my whole life. Congratulations you're increadible



this is the best resource I have seen in my whole life. Congratulations you're increadible



safe g



Thanks it would be better if you made it brief and easier to understand

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