Natural disasters

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Across
  1. 2. vibrations of the Earth's surface
  2. 6. high temperature and long time without rains
  3. 7. big rocks with hole in center which spews lava
Down
  1. 1. uncontrolled spread of flame for forest land.
  2. 3. very fast wind which destroying everything on his way
  3. 4. fast incoming water from sea
  4. 5. large ice balls falling on the surface instead of rain