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Glaciated Landscapes and Change

Relict glacial landscapes, and polar against temperate glaciers

  • 3 things to know
  • Paper 1

Overview

Recall questions on the landforms left behind in Britain, and on what separates a polar from a temperate glacier.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Process

How do polar and temperate glacial environments differ in terms of basal thermal regime?

Key term

What are relict glacial landscapes?

Key term

What is the key criterion for distinguishing between ice sheets and ice caps?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What are relict glacial landscapes?

    Model answer

    Landforms created by past glaciation that remain visible after ice has retreated, providing evidence of former glacial activity.

  2. 2

    How do cirques provide evidence of relict Pleistocene landscapes in upland areas?

    Model answer

    These armchair-shaped hollows with steep back walls indicate where glaciers once accumulated and eroded the mountainside.

  3. 3

    What do arêtes indicate about past glacial activity?

    Model answer

    These knife-edge ridges form between two cirques or glaciers, indicating where ice eroded both sides of a ridge during the Pleistocene.

  4. 4

    How do pyramidal peaks serve as evidence of former glaciation?

    Model answer

    These sharp, pointed summits form where three or more cirques erode back towards a central point, indicating past glacial erosion from multiple directions.

  5. 5

    What do hanging valleys reveal about relict glacial landscapes?

    Model answer

    These tributary valleys with floors elevated above the main valley indicate differential erosion by glaciers of different sizes during the Pleistocene.

  6. 6

    How do ribbon lakes provide evidence of past glaciation?

    Model answer

    These long, narrow lakes occupy over-deepened sections of glacial troughs, indicating where ice erosion was concentrated during the Pleistocene.

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The British Raj in .
IndiaChinaFrance

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AAbout 95% of the park is designated wilderness with strict protection.
BThe valley allows roads, hotels and climbing.
CThe Hetch Hetchy valley was dammed in 1923 to supply San Francisco.

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Erosion means removal of material by marine processes.
TrueFalse

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