Volcano

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Across
  1. 5. Fine gray powder released during an eruption.
  2. 6. When a volcano explodes or releases lava and ash.
  3. 7. Invisible substances released by volcanoes.
  4. 8. A volcano that can erupt or has erupted recently.
  5. 11. Shaking of the ground that can happen before an eruption.
  6. 13. Hot melted rock that flows on the Earth's surface.
  7. 15. The bowl-shaped opening at the top of a volcano.
  8. 16. A very high natural landform; some volcanoes look like mountains.
Down
  1. 1. A volcano that is sleeping and may erupt again.
  2. 2. Clue
  3. 3. A cloud that rises from a volcano during activity.
  4. 4. Something that can cause harm during a volcanic eruption.
  5. 9. Land surrounded by water; some islands are formed by volcanoes.
  6. 10. Melted rock found underground.
  7. 12. A volcano that is not expected to erupt again.
  8. 14. A mountain that can erupt and release lava, ash, and gases.