Across
- 4. a structure linking the earth's interior to the surface
- 5. the innermost and hottest part of Earth's structure
- 7. magma which has made its way to the surface
- 9. the name of the super-continent
- 10. mountains, when plates meet and mountains form under pressure
- 12. plates moving toward each other
- 13. plates gliding past each other
- 15. lava that is thick and immobile
- 17. plates moving away from each other
- 18. the thickest layer made of semi-molten rocks
Down
- 1. flow a fast-moving current of hot gas and volcanic materials
- 2. the current occurring in the mantle
- 3. a sudden and rapid vibration of the earth's crust
- 6. lava that is light and runny
- 7. volcanic ash saturated with water
- 8. small rock fragments
- 11. the thinnest layer on which we live
- 13. ash and dust cemented together
- 14. semi-fluid material within the earth
- 16. solid materials ejected from a volcano