by BlastRoom
Practice glacier formation, glacier types, mass balance, flow mechanisms, and movement rates.
#earth_space_science

20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.

The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
A mountain snowfield survives many summers and compacts into dense ice, but survey stakes show no downslope motion. What must happen before it is classified as a glacier?
In a shaded cirque, winter snowfall exceeds summer melting for decades and firn changes into ice. Why can this become a glacier instead of just a snowfield?
A permanent ice patch is 4 meters thick and frozen to a flat ridge, so it does not deform or slide downslope. Which condition is missing for glacier formation?
A high basin receives more snowfall than it loses each year, and older snow recrystallizes into interlocking ice crystals. What final evidence shows the snowfield has become a glacier?
An ice mass covers nearly all of Greenland, buries mountain ranges, and flows outward from a thick central area rather than down one valley. What type of glacier is it?
In the Himalayas, a long tongue of ice is confined between steep bedrock walls and flows downslope along a single mountain trough. What glacier type is described?
In the photograph, a glacier fills a narrow mountain valley near Juneau, Alaska, with lateral moraines along its edges. What type of glacier is shown?

In the photograph, a broad ice mass covers land and flows around exposed peaks, not through one mountain valley. What glacier type is shown?

Read the glacier mass-budget graph. What is the net mass balance for the whole glacier this year?

The graph shows this year's glacier mass budget. What terminus change is most likely if the same budget repeats?

Use the glacier mass-budget graph. What does this budget imply about the terminus if the pattern continues?

The table lists annual gain and loss at stakes A, B, and C. Which stake is on the equilibrium line?

Use the annual budget table. Which labeled zone is the ablation zone for this year?

Pressurized meltwater at the base of a thick valley glacier separates ice from bedrock. How does that affect glacier movement?
Deep inside a glacier, pressure from overlying ice causes ice crystals to change shape and slowly shift past one another. What movement mechanism is this?
A cold-based glacier is frozen tightly to its bed with little liquid water at the base. Which motion is most likely to move most of its ice?
A valley glacier's center moves faster than ice along its rock walls. What best explains this velocity pattern?
A stake drilled into a valley glacier is found 45 meters farther downvalley after 5 years. What is the average ice movement rate?
A glacier terminus was 800 meters from a bedrock marker in 2010 and 560 meters from it in 2022. What average terminus-change rate does this show?
A GPS receiver on glacier ice moves 18 meters downvalley in 180 days. What is the average daily ice speed?
Crack the passcode before the zombies get in.
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Glaciers Review
40 questions