Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

GeographyGeography

Original Land surface

Wave-cut platform

stump

stack

Natural Arch

Old cliffline

Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

Geography

Joints and beds allowwaves to attack the cliff

more easily

Waves can use rocks to erode the cliff

Wave cut platform

Wave cut notch

Cliff line

HIGH TIDE LEVEL

Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

Geography

GroynesSediment accumulation due to Longshore Drift

Waves approach beach at oblique angle

Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

Geography

Wave-cut platform Wave built terrace

large angular rocks rocks and pebblessoft sand

Ouch!

Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

Geography

The force of the waves pushes air into cracks in the rock

The compressed air exerts enormous pressure at the tip of the crack. As the water falls back the air pressure is released and rock is pulled out from the crack further enlarging the hole.

Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

Geography

Constructive Waves

Spilling Breaker

Powerful SwashWeak Backwash

Tom Abbott, Biddulph High School and made available through

www.sln.org.uk/geography and only for non commercial use in schools

GeographyConstructive Waves

Crashing breaker

Weak swash

Powerful Backwash