Geography

The purpose of this power point is a revision guide for students who are

taking geography as a GCSE

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Coasts Plates of the earth

Quiz

Plates Of The Earth

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The surface of the Earth is broken up into large plates. It’s easy to confuse these plates with the Earth’s crust – the thin outermost layer of the Earth. But there is more to the structure of the Earth than this simple image of a ‘cracked egg-shell’. The Earth’s layers can be defined in two different ways – based on the chemical composition or the mechanical properties of the rock. To understand what plates are, it is important to understand both of these different models.

Quiz

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This is to test you to see if you have learnt anything from this revision guide press the arrow below to start the quiz please write your answers on some paper.

Coasts

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The coast is quite a big topic for GCSE geography these will help you learn about the coasts

Erosion Headlands and BaysCoastal defences

Hollbeck Hall

ErosionThis video will tell you about weathering

erosion .

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Headlands and Bays

Headlands and bays are often found on the same coastline. A bay is surrounded by land on three sides, whereas a headland is surrounded by water on three sides. Headlands are characterized by high, breaking waves, rocky shores, intense erosion, and steep sea cliffs.

Coastal DefencesTable to show prices of different coastal defences

Defence Price

Groynes £5000

Rock armour £1,000 and £4,000 per metre

Beach replenishment £3000 per km

Gabions £4000 per km

Tetrapod's £126 per pod

Sea wall £2000-£5000 per meter

Hollbeck Hall Case Study

This is one of the assessments about why Hollbeck Hall fell of the cliff . Key words you will need to include for this assessment are: write about cracks in the clay soft rock expands slipping plane rotational slip hydraulic action abrasion attrition corrosion takes away the material. Then the cliff retreats further and further away from the cliff this is called cliff recession.

Question 1How much do groynes cost?

A)£3500

B)£500

C)£5000

Question 2

What kind of plate boundary is lied at the San Andreas fault?

A) Conservative

B) Subduction

C) Constructive

Question 3

What rock do you need to make a bay?

A)Soft rock

B)Hard rock

C)Volcanic rock

Question 4

Can you Name four coastal defences?

Question 5

What is the line of volcanoes called down the Atlantic Ocean?

A) Atlantic volcanoes

B)Mid-Atlantic Ridge

C) Slide of lava

Click arrow for answers

Different Types Of Plates

Destructive collision zone

Conservative plate boundary

Destructive subduction plate boundary

Constructive plate boundary e.g Mid Atlantic ridge

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Quiz answers

Question 1:£5000

Question2:A) Conservative

Question3:A)Soft Rock

Possible Answers For Q4

Rip-rap

Tetrapods

Groynes

Gabions

Sea Wall

Question 5:B) Mid Atlantic Ridge