Download or read book When the Earth Moves written by Sandra Downs and published by Twenty-First Century Books (CT). This book was released on 2000 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Earthquakes can be disastrous, but the earth moves in many other ways as well--landslides, rockslides, mudflows, avalanches--sometimes with terrible results. When the Earth Moves explains how the earth is ever in motion, from gradual, daily occurrences such as soil creep to great events, such as when the ancient city of Ubar disappeared in a sinkhole. Delicate balances of tectonic plates, of water and gravity, and of snow and sound are ever changing. Author Sandra Downs explains what may tip the scales to set earth in motion with examples from around the world. Book jacket.