Across
- 3. a great division of land on the globe
- 8. vent in the crust of the earth
- 10. the supercontinent that contained the south
- 11. thickest layer of the earth
- 12. having biological activity suspended
- 13. the action or process of eroding
- 17. molten rock on the earth
- 18. a natural feature of a land surface
- 19. a moving fluid mass composed of debris
- 20. a valley on the ocean floor
Down
- 1. small number of plates which travel independently
- 2. center of the earth
- 4. hot gasses coming out of a volcano
- 5. a transformed fault in California
- 6. molten rock in the ground
- 7. caused by plates scraping each other
- 9. surrounds the inner core
- 14. the outer layer of earth
- 15. all land connected
- 16. a German meterologist