Plate tectonic project.

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Across
  1. 3. An opening in the earth's crust which lava can escape.
  2. 5. A big wave of water caused by a earthquake.
  3. 6. solid rock underlying deposits like soil.
  4. 7. A hot fluid below or within the earth's crust.
  5. 9. What goes in the air after a eruption?
  6. 12. A sudden violent shaking in the ground.
  7. 15. The powdery residue left after a burning substance.
  8. 16. An act of explosion in a volcano.
  9. 17. The resistance of a fluid.
  10. 18. This shakes during a earthquake.
  11. 19. A type of rock found in volcanoes.
  12. 20. A flow of lava from a volcano.
Down
  1. 1. A movement of extremely high air pressure that is caused by a explosion in a earthquake.
  2. 2. Region where many volcanoes erupt and earthquakes happen.
  3. 4. A hard unreactive compound that occurs as mineral quartz.
  4. 8. Hot molten or semi fluid rock.
  5. 10. What does the ground do during a earthquake?
  6. 11. A narrow opening or line of breakage made by cracking.
  7. 12. A sudden violent burst of energy.
  8. 13. The sliding down of a mass of earth or rock.
  9. 14. Giant pieces of the earth's crust and uppermost mantle.