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Glaciers

Glaciers. In this weeks lessons we will be investigating Glaciers and how they erode, transport and deposit material. By the end of today's lesson you will be able to describe how corries are created. Complete worksheet 19.1 from The New Wider World Resource Booklet. Glacier System Revision.

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Glaciers

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  1. Glaciers • In this weeks lessons we will be investigating Glaciers and how they erode, transport and deposit material. • By the end of today's lesson you will be able to describe how corries are created.

  2. Complete worksheet 19.1 from The New Wider World Resource Booklet. Glacier System Revision

  3. How is a corrie formed? Snow collects in a natural hollow on the side of a mountain. Over time, further snow collects in the hollow. This extra weight compresses the snow underneath, turning it into ice. rock lip This overdeepening leads to an ‘armchair’ shape characteristic of a corrie and causes a ‘rock lip’ to be formed. The hollow is deepened and widened by the corrie glacier through the processes of abrasion and plucking.

  4. Corrie formation

  5. Diagram of a corrie

  6. Explain the formation of a corrie

  7. Example of a corrie: Cwm Idwal steep backwall bowl-shaped corrie tarn

  8. Drawing a fieldsketch of Cwm Idwal

  9. Fieldsketch of Cwm Idwal looking south-west steep backwall shattered rock tarn fence

  10. Pupil Activities • Copy diagram D on p235 Foundation The New Wider World. • Complete question 3 p248

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