When ribbon lakes are intertwined they are known as paternoster lakes
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15
Define Pyramidal Peak
Steep-sided pyramid-shaped mountain, eroded on all sides by a cirque
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15
Define Cirque
A large hollow on the side of a mountain
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15
Define ArÊte
A narrow steep-sided ridge, usually between two cirques.
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15
Explain how a Cirque forms
1 - Snow collects up high, it is compacted over time. 2 - Through plucking and abrasion it grows deeper. 3 - When the glacier is big enough it begins to flow
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15
Roughly how much of the Earth's surface was covered in ice during the last ice age?
1/3
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15
Define Abrasion
Rocks scraping and smoothing the surface they pass
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15
Define Hanging Valley
A small tributary valley that hangs above the main glaciated valley
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15
What is the term used to describe an extended period of time in history where temperatures are very low?
Ice Age
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15
Define Plucking
Friction causes ice to melt, the meltwater flows into cracks, refreezes and then pulls the rock along
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15
Name one place in Ireland where you can find a glacial valley
