Across
- 3. long row of mountains on the sea floor
- 7. slow movement in the mantel
- 9. earths major ______
- 10. name of the super continent
- 12. earths crust on land
- 14. animal remains
- 15. slips past
- 19. moving older rock away from the ridge
- 20. driven by convection currents in the mantle
Down
- 1. downwards bend in the ocean floor
- 2. move apart
- 4. slow movement of the continents
- 5. earths crust in the ocean
- 6. mountain full of lava
- 8. name of scientist
- 11. constantly making new oceanic crust
- 13. molten material
- 16. cracks in the earths crust
- 17. comes together
- 18. valley parts of earths crust diverge on land creating a deep valley