How can we trust the age of a rock? UnLock Rocks explains the ages of rocks in an easy-to-understand way, using familiar ingredients in the kitchen. The science of crystal growth, along with rock dating, unfolds in a friendly conversation. While light-hearted, the presentation of physics and geology is carefully correct. UnLock Rocks combines insights from food, physics, jewelry, geology, metallurgy, materials science, forensic science, chemistry, and beekeeping. In this book, you will explore rock formation, precious gemstones, metal casting, atom half-lives, skillful sleuthing, crunchy honey, and phases freezing all through delicious home experimenting. UnLock Rocks inquires about the many ways that crystals impact daily life. This book will spice up conversations with a student explorer, engineer, or scientist. Internationals who wish to include science in their English conversation have found this book helpful. Third printing. You are welcome to download a look inside the book at http: //henkhoney.wordpress.com/category/rocks/ . Online study questions are freely available via www.LonCAPA.org . Marvel once more at our Earth through this conversation of the state of the art and science