Glacier and corrie formation ap
Transcript of Glacier and corrie formation ap
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How do Glaciers Form and how do they shape the land?
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Read through the cards and try to work out what happened to Stardust – you could even try to organise the cards into chronological order.
WHY did the aircraft disappear and then re-appear over 50 years later?
The Stardust Mystery
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How do Glaciers Form?
• Discuss this with the person next to you
• Watch this video to find out more
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What is a Glacier?
• Put the boxes in the correct
order!
R. All the weight of
the ice pushes the
glacier down the
mountain
C.The new layers
of snow compact
last years layer
A. It snows again
next winter
L. The spring and
summer are cold
so the snow
doesn’t melt
G. Snow collects
throughout the
winter
I. Air is therefore
squeezed out if
the snow – turning
it to ice.
E. With no air the
glacier turns a
strange blue colour
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What is a Glacier?
R. All the weight of
the ice pushes the
glacier down the
mountain
C.The new layers
of snow compact
last years layer
A. It snows again
next winter
L. The spring and
summer are cold
so the snow
doesn’t melt
G. Snow collects
throughout the
winter I. Air is therefore
squeezed out if
the snow – turning
it to ice.
E. With no air the
glacier turns a
strange blue colour
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RECAP: What processes shape the land in mountain areas?
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Freeze Thaw WeatheringOn your worksheet – complete the following notes….
Freeze thaw weathering
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• Debris from freeze thaw weathering
• People – for scale!
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• Erosion is the break down and wearing away of rocks involving movement. Ice erodes by 2 main processes – plucking and abrasion.
Glacial Erosion
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1) Plucking
• Plucking is when rocks and stones become frozen to the base of the glacier and are plucked from the ground as the glacier moves down the valley.
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2) Abrasion
• Abrasion occurs when rocks and stones, picked up by the glacier, through plucking at the bottom of the glacier, are rubbed along the bottom of the valley, digging it out.
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Abrasion that has been carried out over rocks in Iceland – smoothing the rocks
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Glacial Landforms / Features –What landforms do you see?
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http://www.kerboodle.com/users/login
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Corrie – contour pattern
tarn
contours close together
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Annotate your outlines to explain how a corrie is formed. Make sure you have used specific terminology:Freeze-thaw weatheringPluckingAbrasionSteep back wallCorrie lipTarn
Corrie lake calleda tarn
Debris ridge called a corrie lip
Freeze-thaw weatheringFreeze-thaw weathering
The Formation of a Corrie
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Cartoon time
• Create a cartoon from the point of view of a snow flake which joins other snow flakes to form a glacier.
• Describe your adventures and how strong you have become…so much so that you have managed to carve different landforms out of solid rock- such as corries!
• It could be a cartoon strip if you like!
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Hey, you lot up in those
clouds! Fall down with me.
Ouch!
You’re squashing
me!
This is cool –we are
turning into blue ice
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Homework
• Complete your cartoons
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Complete your exit card!