Across
- 1. hole in the crust
- 6. An opening in the earth that lets magma out
- 8. the innermost centre of the earth
- 9. a huge crater formed when a volcano collapses inward
- 10. the supercontinent all the countries were connected in 250 million years ago
- 11. Used to measure how big a earthquake is
- 13. a volcano which will never erupt again
- 15. an imperfection in the crusts surface prone to earthquakes
- 17. an erupting volcano
Down
- 2. a gentle eruption that produces little gas
- 3. the thickest layer of the earth
- 4. Volcanic mudflow
- 5. When one plate Subtracts under another
- 7. volcanic mudflow
- 9. the thinnest layer of the earth surface
- 10. rocks solidifying inside the volcano
- 12. the position on the surface above the focus
- 14. dust, ash and fragments blasted out of the volcano
- 15. the exact point in the crust where the earthquake occured
- 16. molten rock on the surface