Marine Vocab

3. as ocean plates move down they pull the plates down
4. the flat ocean floor
10. the theory that the continents were all together at one point
13. a coral reef that is directly attached to an island or shoreline
14. when one plates slides under another plates
16. heat from the center of the Earth rises and cools then falls, moving the plates
17. 2 plates moving away from each other

1. openings in the ocean floor where superheated, chemically active escapes upwards
2. hills on the deep ocean floor that are less then 1000m high
5. reefs that form around a volcanic island and as the island erodes away the reefs grows upwards and forms a ring
6. a valley that forms when two plates separate and the land sinks between the two plates
7. underwater mountain ranges
8. as new plate material forms, it pushes the plate
9. narrow, steep-sided valley
11. 2 plates sliding past each other
12. 2 plates moving towards each other
15. a reef that runs parallel to the shoreline and are separated from the land by deep water