Across
- 3. movement of heat energy through space
- 4. sideways and downward movement
- 7. seafloor spreading
- 10. long deep depressions
- 12. liquid and solid center
- 14. plates slide past each other
- 15. solid outer
- 16. hot solid rock
- 17. divergent boundary on land
Down
- 1. plates spread
- 2. soft layer bellow liposphere
- 5. crust in the upper mantle
- 6. hot rises cold sinks
- 8. plates move together
- 9. original supercontinent
- 11. heat transfer
- 13. break in the crust where earthquakes occur