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

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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