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