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