Across
- 2. the alignment of magnetism in rock
- 4. Hawaii for example
- 5. force of gravity moves a plate down
- 9. Earth's magnetic poles change places
- 10. tectonic plate as its edge subducts
- 13. thinner, more dense, younger crust
- 14. plates slide past each other
- 17. plates move towards each other
Down
- 1. the large ocean covering Earth 225 mya
- 3. records ground movements
- 6. line on maps with points of same age
- 7. move due to convection currents
- 8. plates move apart
- 11. The process that creates new sea floor
- 12. A supercontinent 225 mya
- 15. a graph of earth's movements
- 16. resistance to flow