Volcano facts crossword puzzle

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Across
  1. 3. a powdery residue left after the burning of a substance
  2. 5. fire-born
  3. 6. a long horseshoe-shaped seismically active belt of earthquake epicenters, volcanoes, and tectonic plate boundaries that fringes the Pacific basin
  4. 9. a specific area where two tectonic plates meet
  5. 10. a special class of mountains
  6. 11. a large hole of hot magma rising from deep within the Earth
  7. 12. Molten rock that is below the earth's surface
  8. 13. a relatively thin part of the earth's crust which underlies the ocean basins
  9. 16. a large volcano that erupted on the seafloor & emerged above sea level, occurring in ocean basins or ocean ridges
  10. 17. a destructive mudflow on the slopes of a volcano
  11. 18. the rigid outer part of the earth that is found in the crust & upper mantle of earth
  12. 19. a vent in the earth's crust were lava, ash & gases escape
Down
  1. 1. an oceanic tectonic plate that lies beneath the Pacific Ocean
  2. 2. when an oceanic plate runs into a continental plate & slides beneath it
  3. 4. the upper layer of the earth's mantle that is below the lithosphere
  4. 7. a destructive dense mass of very hot ash, lava fragments & gases that are ejected explosively from a volcano & flow downslope of great speed
  5. 8. a thick part of the earth's crust that forms large landmasses its way older & more complex than the oceanic crust
  6. 14. when plates move towards each other & collide
  7. 15. a sudden motion or trembling in the earth caused by the release of slowly accumulated energy
  8. 17. a hot molten or semifluid rock erupted from a volcano