Types of Glaciers

How big must an 'ice sheet' be?

• 10,000km2

• 5,000km2

• 50,000km2

• 100,000km2

How many ice sheets are there in the world?

• 1

• 2

• 3

• 4

How much of the world's ice is held in ice sheets?

• 90%

• 96%

• 98%

• 85%

What is the typical length of a valley glacier?

• 1-5km

• 10-30km

• 50-100km

• 100+km

What do we call snow that survives the summer and is compacted down?

• Firn

• Diagenesis

• Glacier ice

• Blue ice

What does 'diagenesis' mean?

• When snow becomes ice

• When ice melts

• When snow falls

• When glaciers move downhill

Where are warm-based glaciers found?

• High altitude

• High latitude

• Low altitude

• Low latitude

Which glaciers flow faster?

• Warm-based glaciers

• Cold-based glaciers

Which glaciers erode more?

• Warm-based glaciers

• Cold-based glaciers

Is the temperature at which ice melts higher or lower at its base (compared to its surface)?

• Higher

• Lower