Customer Reviews for Tmw Media Group Physical Geography: Underground Water DVD

Discover the wonders of our earth with the Physical Geography DVD Series. This DVD discusses wells, water flow, hydrology, artesian wells and the water table. Subjects covered include: how ground water is stored and moves through rock below the earth's surface; how water is recovered by wells and how the "cone of depression" occurs in a water table; how aquifers or water-bearing rock layers hold water; how the water table is recharged; how artesian wells work; and why some underground water is "hard" and some is "soft." Grades 9-12. 20 minutes on DVD.