Tsunamis & Volcanos

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Across
  1. 2. Liquid rock underground
  2. 3. Quantity of water vapour and other gases an eruption contains
  3. 5. Most tsunami-generating earthquakes occur on ___/reverse faults.
  4. 8. Mixture of ash, pumice, rock fragments and hot gas that flows very fast
  5. 10. _____ magmas have less than less than 50% silicon
  6. 11. ____ volcanos are mountains
  7. 13. Plate boundaries that create violent volcanos
  8. 14. Solidified fragments of magma
  9. 15. Tsunamis can have a wave _____ of 300 kilometres.
  10. 18. Plate boundaries that create peaceful volcanos
  11. 21. ______ magma rarely explodes
  12. 22. A vent in earth's crust allowing molten material to erupt
Down
  1. 1. Another term for height.
  2. 4. Hot ash combined with water
  3. 6. Volcanos can also trigger ______.
  4. 7. _____ magmas are thick and pasty and rich in silicon
  5. 9. Can enter from outside or occur in the water; cause tsunamis either way
  6. 12. ____ volcanos are reated by low-viscosity lava
  7. 16. Tsunamis can also have a small wave ____.
  8. 17. Height waves reach when they sweep the shore
  9. 19. Fluidity of magma
  10. 20. Liquid rock on the surface