Natural disasters

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Across
  1. 4. a violently rotating column of air that is in contact with the surface of Earth
  2. 6. a much more powerful tropical storm
  3. 7. a depression or hole in the ground caused by some form of collapse of the surface layer
  4. 8. this is caused mostly by an underwater earthquake
Down
  1. 1. storm is an event in which wind coincides with varieties of precipitation that only occur at freezing temperatures
  2. 2. an overflow of water that submerges land that is usually dry
  3. 3. mass wasting that may include a wide range of ground movements
  4. 5. a mass of snow, ice, and rocks falling rapidly down a mountainside