Across
- 4. the solid metal center of earth
- 5. a large moving piece of earths lithosphere
- 6. crust that makes up continents
- 10. process where new ocean crust forms at ridges
- 13. the soft flowing layer beneath the lithosphere
- 15. the edge where two tectonic plates meet
Down
- 1. boundary where plates move toward each other
- 2. boundary where plates move apart
- 3. boundary where plates slide past each other
- 7. crust that makes up ocean floors
- 8. the central layer of earth
- 9. the rigid outer layer made of crust and upper mantle
- 11. the thick middle layer of earth
- 12. the liquid metal layer around the inner core
- 14. the thin outermost layer of earth
