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