Discover the wonders of our earth with the Physical Geography DVD Series. This DVD looks at how running water changes the surface of the earth by cutting away rock in one place, carrying the load, and then depositing it in another place. Concepts investigated include suspension, solution, load, rapids, potholes, meanders, braided streams, deltas, alluvial fans, waterfalls and flood plains. The program also explores characteristics found in youthful, mature and old streams. Subjects covered include: how running water is part of the Hydrologic Cycle; how water flows through a river or stream; how a river's velocity, gradient and discharge are measured; and how a stream's discharge is related to its width, depth and velocity. Grades 9-12. 41 minutes on DVD.
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