Natural disasters

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Across
  1. 1. A volcano that is very likely to erupt.
  2. 4. Hot molten rock on top of the Earth's surface.
  3. 8. A swirling tube of spinning air.
Down
  1. 2. A harbour wave.
  2. 3. A volcano that will never erupt again.
  3. 5. The outer layer of the Earth.
  4. 6. Hot molten rock under the Earth's surface.
  5. 7. Spinning flow of air or liquid.