warm - and cold-based glaciers

Question 1

What are the two classifications of glaciers?

Answer 1

• Warm based glacier

- Cold based glacier

Question 2

Where do watm based glaciers occur?

Answer 2

Temperate regions

Question 3

Examples of warm based glaciers

Answer 3

• western Norway

- southern Iceland

Question 4

Size of warm based glaciers?

Answer 4

• small

- hundreds of metres to a few kilometres in width

Question 5

When are they most likely to melt?

Answer 5

Summer

Question 6

What causes more movement in the glacier?

Answer 6

Meltwater lubricating the glacier

Question 7

What process occur as a result of meltwater lubricating the glacier?

Answer 7

• erosion
• transportation
• deposition

Question 8

Why is all the ice in warm based glaciers at or near melting point?

Answer 8

• warmer atmospheric temperature

- the weight of ice and the effect of geothernal heat at the bed.

Question 9

Basal temperatures are at or …

Answer 9

Above pressure melting point

Question 10

Pressure melting point

Answer 10

Is the temperature at which ice melts under pressure.

Question 11

Where do cold based glaciers occur?

Answer 11

Polar areas

Question 12

Example of cold based glacier?

Answer 12

Arctic

Antarctic

Question 13

Characteristics of cold based glaciers?

Answer 13

• large
• vast ice caps
• ice sheets covering hundred of kilometres squared

Question 14

What conditions do cold based glaciers occur in?

Answer 14

• low precipitation
• little snow
• low levels of accumulation
• no melting so ice stays very cold

Question 15

All ice is below …

Answer 15

Melting point

Question 16

What causes the glacier to be frozen to the bed of the glacier?

Answer 16

• little meltwater

- slow movement

Question 17

As a result of the glacier being frozen to the bed of the glacier, what does it mean?

Answer 17

• Less erosion
• transportation
• and deposition

Question 18

What are basal temperatures below?

Answer 18

Pressure melting point.