Across
- 7. shaking and trembles from rock moving
- 8. broken place in the crust
- 11. boundary where plates move towards each other
- 13. volcano away from the boundary
- 14. middle layer of earth
- 17. plate large piece of lithosphere
- 18. bending or twisting of rock
- 19. boundary where plates move against each other
- 20. drift theory that the continents moved
Down
- 1. waves that travel through the earth
- 2. solid, flexible layer of earth
- 3. theory says lithosphere is broken into pieces
- 4. where the broken rock first moves
- 5. outside, brittle layer of earth
- 6. boundary where plates move away
- 9. when one plate moves under another plate
- 10. reversal evidence of the Poles switching places
- 12. caused by heating and cooling of material
- 15. where plates diverge under the ocean
- 16. on the surface, above the focus