Christine Petersen

This book introduces turquoise, the gemstone that's name is French for "Turkish," describing how it is found, where it is found, and how it is used.

Describes where pearls come from, how they are formed and how they are used.--

An informative look at North America, the fifty states and its other territories.

Who makes up the Judicial Branch? How are members of the Judicial Branch appointed? Find the answers to these questions and more in this title. Primary sources with accompanying questions, multiple prompts, Important Dates section, index, and glossary also included.

Presents general information about the continent of Antarctica, looking at the history of its exploration, its landforms, climate, natural resources, people, and economics.

An introduction to geology that uses full-color photographs and easy-to-read text to describe what fossils are, how they form, and what they reveal about the past.

Introduces readers to what minerals are, how they form, and how we use them today.

Introduces readers to what rocks are and how they form.

"Investigate Gems introduces readers to what gems are and how they form, including mineral gems and organic gems. Learn about crystal systems, imitation and synthetic gems, cultured pearls, how gems are used, and their historic importance. A geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics, sidebars, map, and an index. Aligned to Common Core Standards and correlated...

"Examine Minerals introduces readers to what minerals are, how they form, and how we use them today. Learn how to identify minerals, including color, luster, streak, fracture, hardness, specific gravity, magnetism, and fluorescence. A geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics, sidebars, and an index. Aligned to Common Core Standards and correlated to...