Volcano Crossword puzzle

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Across
  1. 2. - Molten rock beneath Earth's surface
  2. 7. - Broad doomed volcano with gentle slopes
  3. 10. - Chemical compound affecting lava viscosity
  4. 11. - Active volcano in Hawaii
  5. 12. - Volcanic activity away from plate boundaries
  6. 14. - Active volcano in Italy
  7. 15. - Crack through which lava flows out
  8. 16. - Cone shaped volcano formed from pyroclastic material
  9. 18. of fire - Volcanically active zone surrounding the Pacific ocean
  10. 19. - Plate boundary where new crust forms
  11. 20. - Opening through which volcanic material erupts
  12. 21. - Magma that reaches Earths surface
  13. 22. - Volcano built of alternating layers of lava and ash
  14. 23. - Most explosive type of volcanic eruption
Down
  1. 1. - Volcanic island on the Mid Atlantic Ridge
  2. 3. - Rough jagged lava which moves slowly
  3. 4. - Fine particles of volcano rock falling from the air
  4. 5. - Smooth ropy lava which is common in Hawaii
  5. 6. - Bowl shaped depression at a volcano's summit
  6. 8. - Volcanic mudflow which is mixed with water
  7. 9. - Scientist who studies volcanoes
  8. 10. - Process where one tectonic plate slides under aother
  9. 13. Fragmented material which is ejected during an eruption
  10. 17. - Fast hot flow of gas and rock fragments