1. Plate Tectonics “Building Up and Tearing Down”

2. Tectonic Plates

3. Brittle vs. Ductile  Ductile: Relatively flexible. –Ex: A denim pencil –Ex: Silly Putty  Brittle: Breaks relatively easily. –Ex: A wooden pencil –Ex: Peanut Brittle (Yum)

4. Continental vs. Oceanic Plates  Less Dense  Thicker (35-70 km)  Brittle (Not “Stretchy”)  Much Older (3.7 billion years old)  More Dense  Thinner (5-10 km)  Ductile (A Bit “Stretchy”)  Much Younger (144 million years old)

5. Page 173 Transform (Fault) Plate Boundaries Convergent Plate Boundaries 10 cm gap

6. Plate Movement Observations Wrinkled Edges Both Go UpBlack Goes Down

7. Divergent Plate Boundaries  Divergent Plate Boundaries are where the plates are moving (Drifting) apart.

8. Mid-Ocean Ridge

10. Iceland Rift Valley

11. Great Rift Valley

12. Convergent Plate Boundaries  Convergent Plate Boundaries are where the plates are colliding (coming together).

13. Subduction Zone

14. Crater Lake (Near Bend, OR)

15. Folded Mountains Himalayan Mountains

16. Island Arcs Aleutian Islands (AK)

17. Transform (Fault) Plate Boundaries  Transform (Fault) Plate Boundaries are where the plates are sliding past each other. (Like two trains going past each other, I know it’s a stretch).

18. San Andreas Fault

19. Mid-Atlantic Ridge (Along the Edges)

20. New Zealand... Maybe? New Zealand... Maybe? (Alpine Fault)

21. Earth’s Tectonic Plates

22. Plate Movement

24. Plate Movement (ScienceSaurus 185)

25. Plate Movement Model Lab Big Idea (Inquiry 15.1)  Plate tectonics lead to formation of land and landforms as well as the destruction of crust.  It is important to know which landforms are created at which types of plate boundaries. There are some interactive websites that are helpful with this topic.