Freshwater and Saltwater Systems - Glaciers

True or False : There are places on Earth that are cold enough snow can remain all year long.

• True

• False

Approximately what percentage of the Earth's land area is covered in glaciers?

• 5%

• 1%

• 66%

• 10%

How do glaciers form?

• There is a year with a lot of snow and then there is a glacier

• Over time, some snow remains each year and then it gets compacted and forms ice

• Ice from the tops of mountains falls into valleys

• When it rains a lot in a season and then it freezes before the rain is able to drain.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

What is the process of building up more snow over time called?

• accumulation

• glacial build

• plucking

• summer melt

Where are you most likely to find a glacier?

• Antarctica

• Italy

• Australia

• United States

Do glaciers move?

• Yes

• No

• They look like they are moving, but they actually aren't

• Only on very rare occasions

What causes glaciers to move?

• There is a large amount of pressure on the lower layers as the glacier is very heavy. This causes the bottom layers to become more flexible.

• They break apart and tumble down.

• They become completely liquid in the summer

• They are rivers

What is it called when glaciers wear away at the rock as they move through it?

• Erosion

• Deposition

• Evaporation

• Ice Sheet

Tags

NGSS.MS-ESS2-2

What is it called when the material that the glacier has picked up gets left behind further down?

• Erosion

• Abrasion

• Plucking

• Deposition

How do glaciers grow?

• The grow when they are adding more snow in the winter than what is able to melt in the summer

• They grow when it is a cold winter

• They grow because NO water melts in the summer

• They grow because they drank a lot of milk and ate their veggies.