Cold Environments

Question 1

What is a cold environment

Answer 1

An area of land always covered by ice. It may have glaciers, ice sheets and frozen rock or soil.

Question 2

Is there a cold environment on every continent

Answer 2

Yes

Question 3

What is the zone of accumilation

Answer 3

Where there are inputs into the glacial budget.

Question 4

What might happen in the zone of ablation

Answer 4

Melting due to temperature ise

Question 5

What is plucking

Answer 5

Melt water from a glacier freezes to the rock. When the ice moves downhill, rock is taken from
the back wall

Question 6

What is freeze thaw weathering

Answer 6

When melt water or rain gets into cracks in the bedrock. At night the water freezes, expands and causes the crack to get larger. Eventually the rock will break away.

Question 7

What is abrasion

Answer 7

When rocks which have frozen to the base and the back of the glacier scrapes the bedrock.

Question 8

What is glacial budget

Answer 8

Glaciers are a system with inputs, processes and outputs.

Question 9

Summarise the formation of a corrie

Answer 9

1. snow falls into a no th facing hollow on the side of a mointain
2. it freezes and fo ms a glacier as the glacier moves downhill, it uses abrasion, plucking and freeze-thaw weathe ing to erode the hollow
3. mate ial builds up at the front of the glacier which is called a moraine. the glacier melts in the hollow and fo ms a ta n

Question 10

Glaciated valleys have a clear shape that tells us ice has moved through it. Which shape is it?

Answer 10

U shaped valleys with steep sides, a wide valley floor. It flows in a straight shape