"Fundamentals of Geology"

Mike Strickler: Rogue Community College

Video Study Guide: Earth Revealed

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:


Ocean/ocean convergent:

Ocean/continental convergent:

Continental/continental convergent:



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