Across
- 6. the echo sounder showed the _____ of the ocean floor
- 7. melted mantle
- 9. when to plates slide past each other
- 14. type of reversal which shows that the poles switched
- 15. an example of an volcanic island arc
- 16. least dense type of crust
- 18. mountains created by converging continents
- 19. what happens are convergent boundaries
Down
- 1. valley formed by two plates diverging
- 2. ______ rocks are closer to the center of the mid ocean ridge
- 3. the pattern which the magnetic poles show on the ocean floor
- 4. magma cooled down to create new crust
- 5. location where two plates meet
- 6. boundary where two plates move away from each other
- 8. mid ocean ridges form underwater _______
- 10. younger crust
- 11. created by continental crust and oceanic crust colliding
- 12. the type of boundary when two plates slide opposite directions
- 13. when one plate ______ under another during subduction
- 17. break in earth's crust