Across
- 4. top layer of the earth
- 6. plates sliding past eachother
- 9. why pangea separated
- 11. The theory that the world was supercontinent known as pangea and has slowly drifted apart
- 13. plates were originally connected as a supercontinent knows as ___
- 14. made of magnesium and iron
- 15. innermost layer of earth
Down
- 1. second to last layer
- 2. largest layer of the earth
- 3. the top part of the upper mantle
- 5. caused by seafloor spreading
- 7. an objects mass compared to its volume
- 8. plates pulling apart
- 10. "make" the continents
- 12. plates pushing into eachother