Discover the wonders of our earth with the Physical Geography DVD Series. This DVD explores how the surface of the earth is in constant struggle with the elements, including how wind, running water, gravity and temperature changes break down rock formations and carry away material to build up deltas, beaches, geosynclines and dunes. Topics covered include: the difference between weathering and erosion; how wind, water and gravity work to destroy and carry away eroded material to change the surface of the earth; how running water acts to carry away all rock materials and deposit in the world's oceans; Bryce Canyon National Park in Utah as a living laboratory of weathering and erosion; and how the forces of nature work to level the surface of the land. Grades 9-12. 24 minutes on DVD.