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.
DVD Playable in Bermuda, Canada, United States and U.S. territories. Please check if your equipment can play DVDs coded for this region. Learn more about DVDs and Videos
Format: DVD Vendor: TMW Media Group UPC: 709629011588
Availability: Available to ship on or about 01/04/14. You may order this item now and we will ship it to you when it arrives. If you are charging this purchase to a credit card, you will not be charged for this item and its portion of your shipping charges until it is shipped.