Earthquakes and Volcanoes (Revised Edition)
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Presents the theory that the earth's crust is made up of a number of plates that move along cracks or faults in the earth's surface, causing earthquakes and volcanoes. Diagrams the location of plates and shows how movement along faults occurs. Includes footage of earthquakes and volcanoes.
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Original permalink · Record added 2024-04-22 19:46:18