erosion

Viewers will discover how wind, rain, temperature and the activity of living things have formed the Earth's features.

Describes the shaping and erosion of land by natural forces.

Bill explores the force of erosion, the slow wearing away of the earth's surface by water, wind or chemicals. Also discusses iron oxide and sandy beaches. Comedy, interviews with scientists and hands-on experiments.

Presents a short study of weathering and erosion and discusses how the earth is constantly changing due to landslides, wind and water erosion, and other natural factors.

Text, photographs, and diagrams describe the scientific processes that turn sand into glass, and explain how mirrors reflect images.

Readers will learn about 100,000 tons (91,000 metric tons) of rock fall to Earth from space every year. The world's lightest rock is pumice.

Readers will learn that rocks are found all over Earth. The rock cycle is a process that recycles rocks from one type to another.

Presents a short study of weathering and erosion in connection to the rock cycle, and describes the elements that cause erosion, how erosion changes the earth's surface, and the important of weathering to the study of the earth.

Provides information about erosion, discussing what it is, and explaining how it happens; and looks at the effects of erosion on the land. Includes an activity, glossary, and a list of books for further research.