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