Bøger af Christine Petersen

"Explore Ores introduces readers to what ores are, minerals that can be mined for profit. Learn about prospecting, exploration, aboveground and underground mining, extracting metals from ores, and the importance of protecting the environment"--

"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 state standards." --

"Study Soils introduces readers to what makes up soil, from humus and plants and animals to water and air. Learn how weathering, erosion, parent material, decay, bacteria, organic matter, climate, and time contribute to soil formation. A geology-themed project provides the opportunity for hands-on experience." --

"Discover Rocks introduces readers to what rocks are and how they form. Real-world examples bring to life igneous, sedimentary, and metamorphic rock. Full-color photographs will draw in readers while the easy-to-read text breaks down complex concepts. A diagram of the rock cycle ties everything together and 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 state standards." --

"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 to state standards."