Ice crossword

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Across
  1. 4. A mass of ice that covers an area larger than 50,000 km2.
  2. 5. An area of snow that stays on the side of a mountain for a longer time than other seasonal snow cover.
  3. 6. A cold period when temperatures decrease and ice cover expands.
  4. 9. These are streams of flowing ice that moves. They can develop anywhere on Earth where the land is cold and high enough.
Down
  1. 1. Samples taken from deep inside ice sheets.
  2. 2. A mass of ice which is smaller than an ice sheet, covering less than 50,000 km2.
  3. 3. A warmer period when temperatures rise and ice cover retreats.
  4. 7. When warmer temperatures are low enough for ice to form glaciers and ice sheets.
  5. 8. Ice held in the soil.