How Do Glaciers Move?

The video explores the fascinating movement of glaciers, focusing on Mendenhall Glacier. It explains how glaciers, though solid, flow like liquids due to pressure and temperature conditions. The formation process from snow to dense ice is detailed, highlighting the role of climate. The video also discusses the impact of climate change on glacier retreat, emphasizing the visible effects in our lifetime.

What makes glaciers unique compared to other solid structures?

• They are made entirely of water.

• They are found only at the poles.

• They can flow like liquids.

• They are always stationary.

What is the intermediate form between snow and glacier ice called?

• Firn

• Slush

• Permafrost

• Hail

How does pressure affect the melting point of glacier ice?

• Pressure increases the melting point.

• Pressure has no effect on the melting point.

• Pressure decreases the melting point.

• Pressure turns ice into vapor.

What is the zone called where the deepest layers of a glacier are subjected to the most pressure?

• Zone of rapid flow

• Zone of static flow

• Zone of plastic flow

• Zone of brittle flow

What causes the beautiful crevasses seen on glaciers?

• Animal activity

• Erosion by wind

• Melting of the glacier

• Cracking due to stress

What is a visible sign of climate change in glaciers?

• Glaciers moving faster than before

• Glaciers growing larger

• Glaciers becoming more solid

• Glaciers retreating

How long does it take for new ice to travel from the ice field to Mendenhall Lake?

• 50 years

• 500 years

• 100 years

• 200 years