Natural Disasters Crossword

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Across
  1. 3. Burnt material that shoots out of the top of a volcano.
  2. 5. A bowl-shaped depression at the mouth of a volcano or geyser.
  3. 10. A very large ocean wave caused by an underwater earthquake or volcanic eruption.
  4. 12. The part with the highest elevation
  5. 13. A sudden violent shaking of the ground, typically causing great destruction.
  6. 15. Convection currents are continuous movements of water caused by the expansion of the water as its temperature rises.
  7. 16. The outer part of the earth, consisting of the crust and upper mantle.
  8. 18. Neither extinct nor erupting.
  9. 19. The sudden occurrence of a violent discharge of steam and volcanic material.
  10. 20. An occurrence causing widespread destruction and distress.
  11. 21. The process by which material from the earth's surface is worn away by forces such as glaciers, wind, and waves.
Down
  1. 1. The point on the earth's surface directly above the focus of an earthquake.
  2. 2. A long narrow steep-sided depression in the earth's oceanic crust.
  3. 4. A geologic process in which one edge of one crustal plate is forced below the edge of another.
  4. 6. An opening in the earth's crust through which molten lava, ash, and gases are ejected.
  5. 7. The molten rock material under the earth's crust.
  6. 8. A light, porous, glassy lava.
  7. 9. The rock formed by the cooling and solidifying of molten rock.
  8. 11. The theory that Earth's outer shell is divided into several plates that glide over the mantle.
  9. 14. An opening which allows entrance, passage, or exit of a gas or vapour.
  10. 17. An underwater mountain system that consists of various mountain ranges.