Across
- 2. continents are in motion
- 4. slab sings it pulls on the rest of the plate with a force
- 5. cold and rigid outermost rock layer
- 11. circulation of materials caused by differense
- 12. rising mantal materail at mid ocean ridges
- 13. form where two plates slide past eacheother
- 14. a state in which mangetized objects point north
Down
- 1. forms where two plates separate
- 3. where to plates collide
- 6. a theory that all the continents were together
- 7. mountain ranges in the middle of the ocean
- 8. magnetic field reverses polarity magnetized objects point south
- 9. denser plates sinks below themore buoyant plate
- 10. new crust forms along a midocean ridge
- 15. tectonics earths surface is made up of rigid rocks