Avalanches

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Across
  1. 2. readily changing in chemical composition or physical state
  2. 5. exposing to or involving danger.
  3. 6. the 4th month of the year
  4. 8. a rare or important fact or event
  5. 9. frozen water
Down
  1. 1. the twelfth month of the year
  2. 3. a large mass of snow and ice
  3. 4. ground that forms a natural or artificial incline
  4. 7. small white ice crystals formed directly from the water vapor of the air