Glaciers

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Across
  1. 2. Knife-edged ridge between two corries
  2. 3. Water surrounding a glacier freezes onto nearby rocks and pulls them away with as it moves
  3. 4. The river that flows through a valley after the ice age
  4. 7. An armchair-shaped hollow in the side of a mountain
  5. 10. U shaped valley with steep sides and a flat bottom
  6. 12. The removal of snow or ice from a glacier by the act of melting
  7. 13. Lake at the bottom of a corrie
  8. 14. A piece of rock that differs from the rock in the place of which it lies
  9. 15. Moraine frozen into a glacier scours the valley base and sides
Down
  1. 1. A moving frozen river or mass of ice
  2. 3. Formed when three or more corries cut backwards into a mountain
  3. 5. A collection of rock fragments at the bottom of a hill or cliff
  4. 6. A half egg shaped mound caused by a glacier's deposits
  5. 8. Material carried by a glacier
  6. 9. The base of a glacier melts, allowing it to move down a valley
  7. 11. Valleys which are not eroded as deeply as the main valley in which it lies