Providing an introduction to science, this series presents concepts gradually and simply, and backs them up with experiments and activities that are designed to be both straightforward and enjoyable. The illustrated step-by-step projects are accompanied by colour photographs of real places and objects. This book focuses on sound and light, and explains what sound is and how fast it travels, how musical instruments produce various sounds, and how mirrors and lenses work. The activities and experiments include making pipes and a double bass, and building a periscope.