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