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Uncover the incredible world beneath your feet with this exciting volume. 23 practical step-by-step projects will help you really find out about rocks and minerals - including simple soil analysis, making your own fossils, looking at erosion, creating crystals, and much more. It features more than 350 photographs and explanatory illustrations that make learning fun and easy. It is a fascinating fact file and learn-it-yourself project book, ideal for home or school use for 8- to 12-year-olds. You can learn all about igneous, metamorphic and sedimentary rocks and the marvels of minerals with this amazing book. Deep inside the Earth, precious metals, beautiful crystals and rocks as hard as granite are created. Find out how new rocks are made, why mountains are formed and what happens when a volcano erupts. See the strange and wonderful shapes of crystals and discover which minerals are used to make everyday things. Easy-to-do projects will show you how to test rocks for hardness; mimic mountain folds; see which rocks can float; create homemade concrete, conglomerate rock and igneous rock; and much more. With over 350 stunning photographs and diagrams, and lively and informative text by an expert science writer, this is the perfect fun learning book for children, ideal for school projects, home study, or classroom use.