Science Crossword

2. when denser plate sinks below less dense plate
3. when plates separate
4. came up with some theories about the earth and how it moves
6. magnetized object will point North
8. mountain ranges in the middle of the oceans
11. the land of the earth
12. when convection currents produce force
16. a layer of sediments that make up ocean floor
18. slabs of rock that that move
19. process when seafloor spreads apart and lava comes through and makes new land
20. when plates collide

1. suggest that the continents are in constant motion
5. magnetized objects would reversed direction
7. when plates slide past each other
9. when magnetic field changes direction
10. outer most layer of rock
13. potential for plates to move away from a ridge
14. a slab sinks and causes rest of plate to move it
15. the super continent when all continents were together
17. once a living thing found all over the world but it should not have been