Discover the world of science through easy-to-follow experimentsWhat is a force? How do forces make things move - or stop? How does the force of gravity affect life on Earth? Find out the answers to these questions and much more in Be a Scientist: Investigating Forces.This book is part of a friendly, illustrated series, which shows how young scientists can use investigation to find out about science for themselve. It's the perfect introduction to science for readers aged 7 and up.