Marine Science Unit 2

2. less dense, thicker
6. two plates sliding past each other
7. bacteria with no nucleus
11. as new plate movement forms, it pushes the plates
12. heat from the center of the Earth rises, cools, then falls and moves the plates
13. broke apart into smaller continents
14. All continents once joined together as one super continent
16. oceanic plate goes under the other
17. Where the sea floor is elevated
18. Ocean that is getting smaller
19. Changes Coastlines

1. two plates moving away from each other
3. Plates of different densities coverage, the higher density plate is pushed
4. A molten sphere
5. as dense ocean plates sink, they pull the plate down
8. oceanic plate is pushed down into a subduction zone that reaches to the mantle
9. more dense, thinner
10. Coverage without subduction occurring
11. slabs of rock that sink between where the plates are moving apart
15. Ocean that is getting bigger