Ice On The Land

Question 1

When was the last ice age and what was it called?

Answer 1

The pleistocene and it began 2.6 millions years ago

Question 2

What is accumulation?

Answer 2

Its the input of snow and ice into the glacier

Question 3

What is ablation?

Answer 3

The output of water from a glacier as the ice melts

Question 4

What is the difference between accumulation and ablation called?

Answer 4

Glacial budget

Question 5

Name a case study for a glacier.

Answer 5

The Rhone Glacier in the Swiss Alps which is about 7.8km long

Question 6

What is the main cause of glacial retreat?

Answer 6

Global warming

Question 7

What are the two glacial erosion process and what do they do?

Answer 7

Plucking-when meltwater at the base, back or sides of the glacier freezes onto the rock. As the glacier moves forward it pulls pieces of rock out.
Abrasion-bits of rock stuck in the ice grind against the rock bellow which wears it away.

Question 8

Name the 7 landforms produced by glacial erosion.

Answer 8

Arete
Corries
Pyramidal peak
Truncated spurs
Ribbon lakes
Hanging valleys
Glacial troughs

Question 9

What is the lateral moraine?

Answer 9

A long mound of material deposited where the side of the glacier was

Question 10

What is the medial moraine?

Answer 10

A long mound of material deposited in the centre of a valley where 2 glaciers met

Question 11

What is the terminal moraine?

Answer 11

Builds up at the snout of the glacier when it remains stationary.

Question 12

What is the ground moraine?

Answer 12

A thin layer of material is deposited over a large area as a glacier melts

Question 13

Name 4 impacts of glacial retreat.

Answer 13

• Ice will no longer be available for winter sports.
• Unreliable snow fall.
• There will be fewer tourists.
• That would then lead to higher unemployment in them areas.