From sophisticated computers to a simple pair of scissors, we are surrounded by machines. This engaging science book looks at the enormous variety of machines in our world and how they function. Fascinating handson projects, such as making your own gears and belt drives, a pulley, a block and tackle, a can crusher, a water wheel, and an Archimedean screw, will help you to fully understand the principles behind them. Find Out About is a series for young readers who would like to explore the exciting world of science. Each book covers a different topic, bringing the subject to life with vibrant photographs, detailed drawings and clear diagrams, making it really fun to learn. There are easy-to-do experiments using everyday objects and equipment so that young scientists can enjoy finding out all the fantastic facts for themselves.