1. Down to Earth

2. The Restless Planet

3. Earth's Interior

4. The Sea Floor

5. The Birth of a Theory

6. Plate Dynamics

7. Mountain Building

8. Earth's Structures

9. Earthquakes

10. Geologic Time

11. Evolution Through Time

12. Minerals: The Materials of Earth

13. Volcanism

14. Intrusive Igneous Rocks

15. Weathering and Soils

16. Mass Wasting

17. Sedimentary Rocks: The Key to Past Environments

18. Metamorphic Rocks

19. Running Water I: Rivers, Erosion and Deposition

20. Running Water II: Landscape Evolution

21. Groundwater

22. Wind, Dust and Deserts

23. Glaciers

24. Waves, Beaches and Coasts

25. Living With Earth, Part I

26. Living With Earth, Part II

Episode 6. Plate Dynamics

What are tectonic plates? Describe their general motions.

Describe a divergent plate boundary, as exposed in Iceland.

How do divergent and convergent boundaries work to keep earth the same size?

Describe the 3 types of convergent plate boundaries. Give "real world" examples of each.

Why does oceanic crust sink below continental crust?

What 2 things happen as a subducting plate sinks back into the earth?

Why are convergent volcanoes more explosive than divergent (basaltic) volcanoes?

Describe the lithosphere and asthenosphere, and how they interact.

How do strain rate and temperature affect plastic deformation in the mantle?

What are mantle plumes?

What will happen when Hawaii drifts off the hot spot?

What questions remain about the theory of plate tectonics?

Give real-world examples of the different types of plate boundaries:

• Divergent:
• Ocean/ocean convergent:
• Ocean/continental convergent:
• Continental/continental convergent:
• Transform:

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