1. Plate Boundaries yipee

2. Continental Drift _________ proposed the theory that the tectonic plates are moving over the mantle. This was supported by fossil and rock type evidence; also matching of coastline shapes. Wegener

3. The force responsible for plate movement is __________. convection

4. Plate Boundaries Divergent Boundary – moving _____ Convergent Boundary – moving ________ Transform Boundary – moving ________________________ apart together sideways past each other

5. Divergent Boundaries

6. Divergent boundary of two oceanic plates. Creates a ______________. Example: _______________ Mid-ocean ridge Mid-Atlantic Ridge

8. Divergent boundary of two continental plates. Creates a __________. Example: _____________ rift valley Great Rift Valley

9. Great Rift Valley, East Africa

10. Over time…

11. Convergent Boundaries

12. Convergent boundary of two oceanic plates. Creates an ________ and a _____. Example: _____ island arctrenchJapan

13. Mariana Trench/ Japan

14. Convergent boundary of an oceanic plate and a continental plate. Forms a _______ mountain range and a ______. Examples: _______ or _______ Mts volcanic trench CascadesAndes

15. Andes Mountains, S. America

16. Convergent boundary of two continental plates. Forms a ______ mountain range. Examples: ___________, Alps, ______________ foldedHimalayas Appalachians

17. Himalaya Mountains

18. Transform Boundaries

19. Transform boundary where the North American and Pacific plates are moving ____ each other. Example: ________________ in California past San Andreas Fault

20. San Andreas Fault, California

21. Plate Boundaries Review Places where plates move apart are called _____________ boundaries. When continental plates diverge a ___________ is formed. When two oceanic plates converge what is created? _________________ The Appalachians formed mainly from continental plate collisions and therefore are a __________ mountain range. The force moving the plates is ____________. convection divergent rift valley an island arc and a trench folded