Geography Revision

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Last updated 6:33 PM on 4/17/26
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16 Terms

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Glaciation

The process involving the movement and melting of glaciers, leading to significant landscape changes.

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Corrie

A bowl-shaped depression formed by glacial erosion, usually found on a mountain.

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Formation of a corrie

  1. Snow collects in a hollow and the bottom layer turns into ice.
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Formation of a corrie

  1. The ice begins to move downhill and the hollow is eroded.
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Formation of a corrie

  1. Rocks stuck in the ice scrape the bottom of the hollow – abrasion.
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Formation of a corrie

  1. The ice freezes onto rock and pulls it away as it moves – plucking.
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Pyramidal Peak

A sharp mountain peak formed by the erosion of glaciers from multiple sides.

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Formation of a pyramidal peak

  1. Snow collects in three or more hollows around a mountain.
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Formation of a pyramidal peak

  1. The snow turns into ice and forms glaciers which move downhill due to gravity.
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Formation of a pyramidal peak

  1. The glaciers erode backwards towards each other using the processes of plucking and abrasion.
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Formation of a pyramidal peak

  1. Sharp ridges (aretes) form and meet to create a pyramidal peak.
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Arete

A sharp ridge formed between two glacially eroded valleys.

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Formation of an arete

  1. Snow collects in two or more hollows side by side or back to back.
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Formation of an arete

  1. The snow turns into ice and forms glaciers which move downhill due to gravity.
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Formation of an arete

  1. The glaciers erode backwards towards each other using the processes of plucking and abrasion.
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Formation of an arete

  1. A narrow steep ridge forms between the two hollows.