natural disasters

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Across
  1. 4. the people who study earthquakes
  2. 5. substance inside the volcano before it erupted
  3. 6. roman god of fire
  4. 8. sudden shaking of the ground
  5. 9. no rain or less rain .......
Down
  1. 1. inventer of ritcher scale
  2. 2. volcanos that have erupted in recent years and may erupt again
  3. 3. also known as tsunami
  4. 7. a vertical tunnel in the volcano