petrology

Photographs and simple, repetitive text teach children about rocks, explaining where they can be found, what they look like, and how they are used.

Presents a short study of how rocks are made, and describes the rock cycle, how rocks are broken down, how landforms are created by erosion, and weathering.

Poses and answers twenty questions about the nature of rocks. Discusses their study, formation, types, and weathering. Also examines how to prevent erosion caused by human activity. Includes photographs, an index, a glossary, and a list of Internet links.

Simple text and color photos present a basic introduction to rocks, explaining where they are found, what they look like, and how the three types of rock--igneous, sedimentary, and metamorphic--form.

Describes the processes that create rock, such as weathering, compaction, and cementation, and examines igneous, sedimentary, and metamorphic rock.

Questions and answers provide basic information about rocks and minerals, including their formation, properties, and identification.

Presents an introduction to the rock cycle, the process by which rocks form, break down, and reform over the course of thousands of years, looks at different types of rocks, and examines the forces that cause rocks to change.

Presents a short study of igneous rocks and how they are formed, the various types of igneous rocks such as obsidian and pumice, and the importance of igneous rocks to the study of the earth.

Describes the distinguishing characteristics of various kinds of rocks.

Presents information on collecting and identifying rocks and minerals, with sections on metallic, nonmetallic, gem, and rock-forming minerals, and on igneous, sedimentary, and metamorphic rocks.