2. From Biologic to Geologic Evolution Lets look at the Earth!

4. With Your Group: How does our new knowledge of refraction through different densities give us information about the earth?

5. Evidence From Earthquakes: P&S waves P (primary) waves= Compression (push/pull waves) S (secondary) waves= Transverse (up/down waves)

8. Mohorovicic (Moho) Discontinuity

9. Plate Tectonics Plate Boundaries and Interactions

10. The Theory of Plate Tectonics  The Earth’s surface is divided into plates that move and interact with one another.

11. Overview of Plate Boundary Interactions

13. Divergent Plate Boundaries Plates are moving apart. New crust and lithosphere is “created” Associated with ocean ridges, rift valleys, volcanism, earthquakes and high heat flow.

14. Examples found on Earth: Mid-Atlantic Ridge, African Rift Valley, Iceland

15. Plates are moving towards each other. Old crust and lithosphere is “recycled”. Associated with ocean trenches, island arcs and mountain ranges. Earthquakes and volcanism are common. Convergent Plate Boundaries

16. Examples found on Earth: Himalayas, Pacific Ring of Fire, Andes Mountains, Marianas Trench

18. Plates slide past each other, oftentimes connecting two ridges or trenches. Crust is deformed or fractured; Lithosphere is neither created nor recycled. Long faults and earthquakes common. Examples found on Earth: San Andreas Fault Transform Plate Boundaries

19. Plate Boundaries, Earthquakes and Volcanic Activity

21. Continental Drift: Pangea

22. Matching Fossils

23. Matching Mountain Ranges

24. Glacial Evidence

25. Magnetism

26. Earthquake Patterns

27. Age of Rock

28. Hot Spots