Glaciers Quick Review

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What is a glacier?

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A glacier is a large mass of ice that forms from compacted snow and moves slowly over land due to gravity.

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What is erosion?

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Erosion is the process by which natural forces like water, wind, and ice wear away rocks and soil.

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What are kettle lakes?

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Kettle lakes are depressions formed by melting glaciers, often filled with water.

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What are striations in geology?

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Striations are scratches or grooves on bedrock caused by the movement of glaciers.

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What is a U-shaped valley?

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A U-shaped valley is a valley formed by the erosion of a glacier, characterized by its wide, flat bottom and steep sides.

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What is a drumlin?

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A drumlin is a streamlined hill formed by glacial deposits, typically elongated in the direction of glacier movement.

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What is the difference between sorted and unsorted sediment?

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Sorted sediment is arranged by size, while unsorted sediment consists of particles of various sizes mixed together.

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How do glaciers contribute to landscape formation?

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Glaciers shape landscapes by eroding rock and soil, transporting materials, and depositing them in new locations.

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What is glacial till?

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Glacial till is unsorted sediment deposited directly by a glacier, containing a mix of clay, silt, sand, and boulders.

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What is a finger lake?

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A finger lake is a long, narrow lake formed in a glacially carved valley.