Across
- 3. : the landmass may split into two or more smaller segments
- 6. : created the continental drift hypothesis
- 7. : supercontinent
- 12. : concentration of heat in the mantle able to produce magma
- 13. : motion of matter from changes in temperature
- 15. : fossil organism found on different landmass
- 16. : plates that move apart
- 18. : the uppermost part of the mantle
- 19. : oceanic plate is forced into the mantle beneath a second one
Down
- 1. : continental exists in the form of several mountain belts
- 2. : when rocks show the opposite magnetism as the field
- 4. : produces new oceanic lithosphere
- 5. : the overlying crust behave as a strong, rigid layer
- 8. : two plates that come together
- 9. : natural remnant magnetism in rock bodies
- 10. : two plates that grind past each other
- 11. : continents elevated zones on the floor of ocean basins
- 14. : masses of hotter-than-normal mantle material
- 17. : one numerous rigid section of the lithosphere
- 20. : when rocks show the same magnetism as the present field