8.9 vocab review

1. When one denser plate slides under a less dense plate
4. Type of plate that is less dense and under the ocean floor
7. Type of plate that is less dense and under land
9. how do the plates move
12. Under water mountain system created by a divergent boundary (no space or dash)
14. Theorized continental drift (last name)
16. Created when plates slide against each other on a fault line
17. landform created by subduction (no space)

2. When plates pull apart
3. Created by transform plate boundary (no space)
5. landform created by continental to continental Convergence
6. Discovered sea-floor spreading (last name)
7. theory by Wegener that all the continents where once joined (no space, only 2 words)
8. Is heat less or more dense
10. supercontinent named by wegener
11. When heat rises and cool sinks
13. When plates slide against each other
15. When plates push against each other