Glaciation

How much of the World's surface is covered by ice?

• 5%

• 10%

• 12%

• 30%

How many years ago did the last Ice Age begin?

• About 2 years ago

• About 3000 years ago

• About 10,000 years ago

• About 30,000 years ago

What are warmer periods of time that are not ice ages known as?

• Glacial

• Intergalactic

• Interglacial

• Hot

Glaciers form during ice ages and more snow is added to the glaciers high up in the mountains. This is known as..

• Ablation

• Accumulation

• Blizzard

• Snow fall

What is plucking?

• When a glacier scours the valley floor.

• When the snout of the glacier pushes deposited sediment.

• When rocks become frozen into glacier and are plucked out when the glacier moves.

• When frozen water expands and forces cracks in rocks to get bigger and break apart.

What is Abrasion?

• When a glacier scours the valley floor.

• When the snout of the glacier pushes deposited sediment.

• When rocks become frozen into glacier and are plucked out when the glacier moves.

• When frozen water expands and forces cracks in rocks to get bigger and break apart.

During the process of freeze-thaw weathering, when water freezes it expands by how much?

• 5%

• 7%

• 8%

• 9%

What is the front part of a glacier called?

• Nose

• Beak

• Snout

• Peak

Glaciers can be found in which Mountain range in Europe today?

• The Lake District

• The Alps

• Snowdonia

• The Pennines

The pushing of deposited sediment by the snout of the glacier as it advances downhill or the valley is known as....

• Plucking

• Abrasion

• Bulldozing

• Deposition