Across
- 5. breaks in the crust where earthquakes occur
- 7. plates move together
- 10. original supercontinent
- 13. solid outer
- 14. underwater mountain system
Down
- 1. divergent boundary on land
- 2. crust and upper mantle
- 3. Plates spread
- 4. long deep depressions in ocean floor
- 6. hot solid rock below crust
- 8. plates slide past each other
- 9. movement of heat energy through space
- 11. movement of heat in liquids and gasses
- 12. sideways and downward movement
- 13. liquid and solid center
- 15. movement of heat from one solid object to another