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(0)Christine Petersen
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Summary
Dig into the world of geology with the Rock On! series! Fantastic Fossils introduces readers to the different types of fossils and how they form, from petrifaction and carbonization to molds, impressions, and amber. Chapters discuss key fossils finds, such as perfectly preserved mammoths and the dinosaur-like, feathered archaeopteryx. Readers will be introduced to scientists who made important discoveries and contributions to the study of fossils....
2) Groovy gems
Author
Summary
"Groovy Gems" introduces readers to what gems are and how they form, including mineral gems and organic gems. Chapters discuss crystal systems, imitation and synthetic gems, cultured pearls, how gems are used, and their importance throughout history. Sidebars introduce birthstones, precious metals, and conflict diamonds, while a colorful world map indicates where gems are found.
Author
Summary
Introduces readers to what ores are and how they are formed, the everyday importance of the metals they contain, how they are mined, and how their metal content is extracted. Readers also learn the importance of protecting the environment before and after mining and of recycling metals.
