Unit 2 Coastal Landscapes & Watery World

Notes with case studys for Coastal Landscapes and Watery World Unit 2 Edexcel Geography.

Case studies include:

-walton-on-the-naze

-3 gorges dam

-tigris euphrates river system

there were a few silly mistakes (spellings, etc.)

feel free to leave comment with corrections but generally notes are accurate

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  • Created by: pav
  • Created on: 07-05-12 20:35

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Unit 2-Edexcel GCSE
Pavandeep Garcha 1
Specification A

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Why do waves break?
Waves are the result of the wind blowing over the
sea. As they approach land they break.

The bottom of the wave touches the sand and
slows down due to increased friction. The top of
the wave becomes higher and steeper until it
topples over.

Swash…

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Destructive Waves
· Mainly responsible for coastal erosion & and taking
sediment away
· Backwash stronger than swash(makes it able to carry
sediment away)
· Break frequently(10-15 a minute)
· High In proportion to length
· Generally found on steep beaches




Unit 2-Edexcel GCSE
Pavandeep Garcha 3
Specification A

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Constructive Waves
· Responsible deposition
· Swash stronger than backwash (makes it able to deposit
sediment)
· Break in frequently(10 or fewer a minute)
· Long in relation to height
· Generally found on gently sloping beaches




Unit 2-Edexcel GCSE
Pavandeep Garcha 4
Specification A

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Erosion
Hydraulic action
· Pressure of water being thrown against the cliffs by the
wave
· Water compresses air in faults
· Puts pressure on rock


Corrasion (Abrasion)
· Sand and pebbles carried within waves
· Thrown against cliff with force
· Sand and pebbles break off more rock


Corrosion…

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Weathering
Physical (Freeze-Thaw)
· Water in rocks freeze and expand
· Puts pressure on surrounding rock
· Due to pressure from frozen water-fragments of rock break
of

Chemical (Acid Rain)
· Rainwater contains weak acids
· Rainwater reacts with rocks and cause the rocks to breakup
or disintegrate


Biological (Plants…

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Mass Movement
Mass Movement is when material moves down a slope due to
gravity

Soil Creep
· Slowest downhill movement of soil
· Gravity will pull the water that is contained in the soil down
the slope
· Soil will move with water
· Happens very slowly (not possible to…

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Headlands
· Headlands are formed when the sea attacks a section of
coast with strips of hard and soft rock.
· The bands of soft rock, such as sand and clay, erode more
quickly than those of more resistant rock, such as chalk.
· This leaves a section of land…

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Cliffs and Wave-Cut platforms
· Headlands are usually formed from cliffs
· Sea erodes cliff by hydraulic action and corrasion (Abrasion)
· It cuts the cliff and forms a wave-cut notch
· An overhang of rock will form above this notch
· It will fall into the sea as a…

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Caves, Arches, Stacks and Stumps
· These are formed in rocks with a fault or line of weakness
· Hydraulic action will erode this fault
· The fault will widen in time and form cave
· If fault is in a headland , caves are likely to form on both…

Comments

conor Kavanagh

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I worry about revising from a website that cannot get simple grammar correct.

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