GLACIER Land Forms 2024

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What is an esker?

Back

An esker is a long, winding ridge of stratified sand and gravel, formed by the deposition of sediment from meltwater streams flowing beneath a glacier.

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How are glacial landforms classified?

Back

Glacial landforms are classified into two main categories: erosional landforms (formed by the removal of material) and depositional landforms (formed by the accumulation of material).

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What is the process of glacial erosion?

Back

Glacial erosion is the process by which glaciers remove rock and soil as they move, shaping the landscape through processes like plucking and abrasion.

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What is deposition in the context of glaciers?

Back

Deposition is the process by which glaciers drop the sediments they have transported, creating landforms such as moraines, drumlins, and eskers.

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What are drumlins?

Back

Drumlins are elongated hills formed by glacial deposition, typically composed of till, and they indicate the direction of glacier movement.

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What does the orientation of drumlins indicate?

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The orientation of drumlins indicates the direction in which the glacier moved, with the tapered end pointing in the direction of movement.

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What is the difference between constructive and destructive processes?

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Constructive processes build up landforms (like deposition), while destructive processes wear down landforms (like erosion).

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True or False: Glacial land features form quickly.

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False. Glacial land features form over long periods of time due to the slow movement of glaciers.

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What is till?

Back

Till is unsorted sediment deposited directly by a glacier, consisting of a mixture of clay, silt, sand, gravel, and boulders.

Front

What are moraines?

Back

Moraines are accumulations of debris (till) that have been pushed along by a glacier, forming ridges at the glacier's edge.