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صفحه 7:
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powerpoints subsvited by truckers. Mhis is 0 vowpletely Pree site
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Geography
Old cliff
line
Original Land surf
a ce
stack
stump
Natural
Arch
Wave-cut platform
Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography
and only for non commercial use in schools
Cliff line
Geography
Joints and beds allow
waves to attack the cliff
more easily
HIGH TIDE LEVEL
Waves can use rocks to
erode the cliff
Wave cut platform
Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography
and only for non commercial use in schools
Wave cut
notch
Groynes
Sediment 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
Geography
Wave-cut platform
Wave built terrace
Ouch!
large angular rocks
rocks and pebbles
soft sand
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
Weak Backwash
Powerful Swash
Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography
and only for non commercial use in schools
Constructive Waves
Geography
Crashing breaker
sh
a
w
k
c
a
B
l
u
f
Power
Weak swash
Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography
and only for non commercial use in schools
Geography
This powerpoint was kindly donated to www.worldofteaching.co
m
http://www.worldofteaching.com is home to over a thousand
powerpoints submitted by teachers. This is a completely free site
and requires no registration. Please visit and I hope it will help in
your teaching.
Tom Abbott, Biddulph High School and made available through www.sln.org.uk/geography
and only for non commercial use in schools
