14 Questions
What is the most common process by which glaciers move?
Internal plastic deformation or internal flow.
What is basal sliding?
The movement of an entire glacier as a single unit due to melting at its base.
What causes the formation of crevasses on the surface of glaciers?
The splitting of upper layers of the glacier as the glacier below moves.
What are crevasses?
Ice cracks on the surface of the glacier.
What factors can increase glacial flow rates?
Steeper slope, increased size and thickness of the glacier, warmer temperatures, and smoother rock surfaces below the glacier.
How fast can the slowest glaciers move?
A couple of centimeters a day.
How fast can the fastest glaciers move?
Upwards of 30 meters a day.
Why are crevasses dangerous for hikers and mountain climbers?
They get covered with fresh snowfall, making them invisible.
What are glaciers?
Glaciers are ice mountains that move.
How are glaciers created?
Glaciers are created through internal plastic deformation, where layers of snow pile up and compress into dense ice.
What impact does glacier movement have on the Earth's surface?
Glacier movement can scrape against rocks and carve out basins, shaping landscapes and creating lakes.
Why do glaciers move?
Glaciers move either because they become top-heavy or because they slip on their base.
What is the rate of movement for most glaciers?
Most glaciers move a couple of centimeters to a couple of meters per day.
What conditions are necessary for a glacier to form?
Glaciers form when snowfall accumulates faster than it melts, compressing into dense ice.
Test your knowledge on glacier movement and learn about the fascinating process of how glaciers are created and move. Explore topics such as internal plastic deformation, basal sliding, crevasses, and glacial flow rates. Discover the unique characteristics of these ice mountains and their impact on the Earth's landscape.
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