Snow and Ice Quiz

This is young, granular snow that has been partially melted, refrozen and compacted.

• Firn

• Nunatak

• Permafrost

• Neve

This is rounded, well-bonded snow that is older than one year.

• Glacial ice

• Pingo

• Neve

• Firn

What is it called when the interconnecting air or water-filled passageways within firn are sealed off to form glacial ice?

• Lock-in

• Pore-closure

• Ice decompression

• Firn

Tags

NGSS.MS-PS1-4

Which is true of icebergs and sea ice?

• Icebergs only occur in the Atlantic ocean

• Sea ice melting contributes to sea level rise

• Icebergs originate on land

• Sea ice is only found in the Arctic

Which is true of permafrost?

• Ground that has been frozen at least 1 year

• Contributes to moraine formation

• Can uplift unfrozen sediments to form pingos

• Cannot form in a periglacial environment

Glacial ice forms faster when:

• Ice overburden pressure is low

• Temperatures are consistently below -20 C

• Conditions are warm enough for melt/freeze cycles

• There is a large amount of air in the ice

The molecular structure of ice makes it more/less dense than liquid water

• Less dense

• More dense

• The same density

• No conclusion can be made

Tags

NGSS.MS-PS1-4

The crystalline structure of ice is made possible by

• Covalent bonds

• High rates of particle motion

• Sublimation

• Hydrogen bonds

At what temperature does fresh water reach its maximum density?

• 0 °C

• 2 °C

• 4 °C

• -2 °C

Which form of ice has the greatest density

• Firn

• Glacial ice

• Neve