Plate Tectonics

2. ocean collision/ Older denser oceanic plate us subducted downward into the mantle and a chain of volcanic islands can be formed. What convergent boundary is this?
6. boundary is this ?
7. continental collision/ Two continental plates collide, mountains usually form because both relatively low in density. What convergent boundary is this?
10. floor spreading/What process does the divergent sea floor spreading use?
11. valley/What does a divergent boundary continental-continental create?
13. process does the convergent oceanic continental use?
15. process is used for the convergent ocean ocean collision?
16. boundary is this -><-?
18. ridge/ What does a divergent sea floor spreading create?

1. What process does the convergent continent continent use?
3. does a transform boundary create?
4. floor spreading/ Two ocean plates pull apart from each other. What divergent boundary is this?
5. arc/What does a ocean ocean collision create?
8. does a convergent oceanic-continental create?
9. What process does the transform boundary use?
12. What does a continent-continent collision create?
14. boundary is this <-->?
17. continental/Oceanic crust more dense, so it subducts under the continental crust. What convergent boundary is this?