Across
- 2. the lithosphere that slowly moves over the asthenosphere
- 4. layer of rock that forms earth's outer surface
- 7. hot solid material between earth's crust and core
- 9. pieces of earth's lithosphere are in constant motion
- 11. a layer of molten iron and nickel
- 15. trace of an ancient organism
- 17. plate boundary where two plates move from each other
- 18. transfer of heat from one particle of matter to another
Down
- 1. wave of energy that travels
- 3. plate boundary where two plates move to each other
- 5. transfer of heat by movement
- 6. rigid layer
- 8. dense sphere of solid iron and nickel
- 10. plate boundary where two plates move past each other
- 12. the continents slowly move across earth's surface
- 13. single landmass that broke apart 200 million years ago and gave rise to today's continents
- 14. soft layer
- 16. break in earth's crust