Earth's Crust - Early Bird Earth Science Author:Conrad J. Storad This book introduces young readers to Earth’s basic structure, then focuses in on the rocky outer layer called the crust. It describes the tectonic plates of which the crust is made, how plate movement makes mountains grow and causes earthquakes, how volcanoes form, and how new crust is made under the oceans. — Book Features... more »> Be a Word Detective • Charts/Graphs/Diagrams • Note to Adults • Full-Color Photographs • Further Reading • Glossary • Index • Table of Contents • Websites« less