Glaciers

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Across
  1. 5. the part of movement of a glacier that is caused by change of shape within the glacier
  2. 6. a sharp peak with multiple faces
  3. 8. scratches on bed rock inscribed by debris at the base of a moving glacier
  4. 9. an arc-shaped ridge of rocky debris that is shoved forward by an advancing glacier
  5. 10. a large glacier that forms on a broad land area at high latitudes where summers are cool enough so that not all of the previous winter’s snow is melted
  6. 11. the downstream end of a glacier
  7. 13. a broad irregular deposit formed from sediments that are dumped when a glacier melts
  8. 14. the area in the lower part of a glacier where there is a net removal of glacial ice year after year
  9. 15. a low ridge of rocky debris deposited at the side of a mountain glacier
  10. 16. the breaking away of a mass of ice from a glacier
  11. 17. the balance in accumulation and ablation when the volume of a glacier is constant and the terminus stays in the same place
  12. 19. a deep U-shaped valley carved by a glacier and drowned by the sea
  13. 22. a two-fold process involving the melting of ice under excess pressure and the refreezing of the derived meltwater upon the release of pressure
  14. 23. a mound or ridge of mainly glacial till deposited by the direct action of glacial ice
  15. 24. rock and mineral particles that are carried at the base of the glacier and that grind the bedrock
  16. 25. poorly sorted, unlayered sediment carried or deposited by a glacier, usually consisting of a mixture of clay, silt, sand, gravel, and boulders ranging widely in size and shape
  17. 27. a smaller glacier that forms in mountainous areas and flows down valleys to lower elevations
  18. 28. a bowl-like depression formed by a glacier on the side of a mountain
Down
  1. 1. a large mass of ice on Earth’s surface that flows by deforming under its own weight
  2. 2. a wide and deep crevasse where a glacier pulls away from its backwall. arête: a sharp-edged mountainous ridge carved by glaciers
  3. 3. the outermost moraine that marks the farthest position of a glacier
  4. 4. the area in the upper part of a glacier where there is a net addition of new glacial ice year after year
  5. 7. to change shape
  6. 12. the part of movement of a glacier that is caused by sliding of the glacier over the material beneath it, aided by a thin lubricating layer of water
  7. 18. the boundary between the zone of accumulation and the zone of ablation
  8. 20. a long strip of rocky debris formed where the sides of two glaciers converge
  9. 21. loose rock and mineral material that is carried by the glacier
  10. 26. a type of glacial erosion by meltwater penetrating, freezing, and breaking off pieces of bedrock which are then incorporated into the base of the glacier