Glaciers as a system.

Question 1

Inputs.

Answer 1

Snow and avalanches.

Question 2

Outputs.

Answer 2

Melting and evaporation, sediment.

Question 3

Polar glaciers.

Answer 3

Cold-based glaciers and occur near the poles where the temperature is below freezing.

Question 4

Temperate glaciers.

Answer 4

Warm-based glaciers and include most glaciers outside of Antarctica and northern Greenland ice caps.

Question 5

Internal flow.

Answer 5

This is movement within the glacier ice because of gravity.

Question 6

Basal flow/ slippage.

Answer 6

The glacier moving over bedrock creates friction . The lower ice is also under a great deal of pressure results in melting.

Question 7

Extensional flow.

Answer 7

Occurs when the valley gradient becomes steeper.

Question 8

Compressional flow.

Answer 8

Occurs when there is a reduction in the gradient of the valley flood leading to ice deceleration and thickening of the ice mass,

Question 9

Rotational flow.

Answer 9

This occurs within the corrie. Rotational movement.