Natural Hazard crossword puzzle

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Across
  1. 2. sudden fall of rock and soil
  2. 7. Sudden ground shaking from Earth's movement
  3. 9. release of lava, ash, and gas
  4. 10. melted rocks underground
  5. 12. movement of rock and soil down a slope
  6. 16. rise in sea level
  7. 17. surface point above a quake
  8. 18. Strong storm with wind and rain
  9. 19. Spinning column of air touching the ground
  10. 21. ground collapse forming a hole
Down
  1. 1. crack where an earthquake occurs
  2. 3. Large ocean waves from underwater activity
  3. 4. storm with thunder and lightning
  4. 5. what volcanoes erupt
  5. 6. Water covering normally dry land
  6. 8. smaller quake after main one
  7. 11. fast moving snow down a slope
  8. 13. Long period with little rain and everything dry
  9. 14. large uncontrolled fire
  10. 15. wearing away of land over time
  11. 20. from volcanic ash in air