Glacier crossword

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Across
  1. 3. the starting point of a glacier
  2. 5. a valley which is cut across by a deeper valley or a cliff
  3. 7. the gradual destruction of something without movement
  4. 11. a sharp mountain ridge
  5. 12. ice melts and freezes eroding the rock
  6. 13. river of ice
Down
  1. 1. the gradual destruction of something using movement
  2. 2. a valley formed by a glacier
  3. 4. frozen water
  4. 6. a mountain lake or pool formed in a corrie
  5. 8. a place where water flows over a vertical drop
  6. 9. melted glacial ice
  7. 10. the process of scraping wearing something away