Across
- 4. what is the center of the earth called
- 8. was a theory 50 years ago
- 12. plates crashed together forming -------
- 15. was a theory in 1912
- 16. where does earthquakes happen on plates
- 17. plates that are under the ocean
- 18. what is the first layer of the earth called
- 19. South America and Africa --- together
- 20. which ocean is the fire located
Down
- 1. plates crashed together
- 2. if similar fossils are seen all around the world that means that the world may have been --------
- 3. where 90% of the world earthquakes
- 5. ice sheets,mountains,fossils and continents fitting together is -------- that the theory of continental drift may be true
- 6. a plate slides under another plate
- 7. plates that are under the continents
- 9. how many major plates are there
- 10. mega continent
- 11. move on the liquid layer
- 13. how minor plates are there
- 14. What plate is the ring of fire mainly located