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