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There are three types of tectonic plate boundaries: convergent, where plates meet head-on; divergent, where plates pull apart; and transform, where plates grind past each other.
Earthquake Course on iTunes U
What are earthquakes? Gain a new perspective on these powerful phenomena with this iTunes U course co-produced by the California Academy of Sciences and Northern California public media provider KQED. Designed for middle- and high-school science educators to broaden their own knowledge and use with students, the course weaves together activities, videos, and classroom-ready materials into a primer on how plate tectonics shape Earth's surface and directly impact people's lives.