Across
- 1. where the continents are slowly growing further apart
- 2. a rumble of seismic plates after a build up from pressure
- 5. a crack in the earth that is in California
- 7. an ancient part of an animal or plant
- 8. the thinner part of the crust
- 9. molten rock
- 10. when the plates are coming apart and the magma from the mantle refills the crust
- 12. the spaces between the tectonic plates
- 15. when plates are pulling apart from each other
- 17. the guy who had a theory that the continents were whole and the split apart
- 18. the thicker part of the crust
Down
- 1. when heat rises and cools back down
- 3. when two plates slide past each other
- 4. the upper mantle and crust
- 6. when two plates headbutt each other and make mountains
- 11. a range of mountains in the Atlantic ocean
- 13. the area of the oceanic crust as it slides under the continental crust
- 14. a range of volcanoes in the Pacific
- 16. what scientists believe was the first continent