The action heats up with entertaining experiments for children that help explain what heat is and how it works. Simple, clear text explains scientific concepts like heat expansion in a way children will understand. History boxes feature amazing facts about scientists. Using easy to follow experiments, this book explains: why sidewalks crack in the heat of summer, the fundamentals of steam, steam engines, and geysers, how heat travels from one place to another through conduction, radiation, and convection, the amazing principles of radiation, and how much heat an object needs to feel warm.