Discover how geologists study rocks to learn more about Earth, from how it was formed to how it has grown and changed over millions of years.A True Book: Earth Science series presents fascinating facts and fun activities that will engage the budding earth scientist, while exploring the fields of geology, meteorology, ecology, and more. This series includes an age appropriate (grades 3-5) introduction to curriculum-relevant subjects and a robust resource section that encourages independent study. Readers will learn about the causes of earthquakes, volcanoes, and other Earth-shaking disasters.