| When the Earth Moves |
 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. Powerful forces creating sudden motion are interconnected. Earthquakes can make volcanoes belch gas clouds and lava, cause the ground to subside, and create massive landslides and avalanches. Volcanic eruptions can cause earthquakes and landslides. And a landslide can start an earthquake! Learn about the mechanics of each type of earth movement, and how these earth movements are taken into consideration by the people who live with their dangers— from highway crews creating intentional landslides to keep busy roads clear to the engineers designing drainage to ensure that sinkholes don’t open up on a construction site. When The Earth Moves ISBN 0-7613-1412-1 Twenty First Century Books 1999, $24.95 hardcover 64 pages, full color BUY THE BOOK! CONTENTS Chapter 1 Our Earth In Motion Chapter 2 Slips And Slides Chapter 3 A Shaking, Quaking Planet Chapter 4 Unstable Ground Chapter 5 When The Bottom Drops Out Recommended Resources Glossary |