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