The sun, furnaces, and ovens all make heat. But have you ever watched matter expand when it is heated? Or seen how different kinds of matter conduct heat? Now you can! Explore heat with the fun experiments you'll find in this book. As part of the Searchlight Books(tm) collection, this series sheds light on a key science question―How Does Energy Work? Hands-on experiments, interesting photos, and useful diagrams will help you find the answer!