"Discover the wonders of our rocky planet with this quiztastic book featuring rocks and minerals from all over the world! Learn about Earth's fascinating rocks, minerals, and gems, from igneous rocks formed deep inside the Earth's molten core to sparkling emeralds, in this quiz book for children ages 9+. Striking pictures and fast facts will allow you to learn all about geology in a fun and engaging way. The pure form of every rock or mineral is shown via an eye-catching image, surrounded by quiz questions. Turn the page to find the answers. In no time, you'll be able to distinguish sedimentary from sandstone, metamorphic from mudstone, and pyrite from pearl."-- Amazon.com.