Why do things float? How do magnets work? What is gravity? The answers to these questions and more can be found in this fact-filled book. Simple, easy-to-read text and lively illustrations introduce basic science topics. Also includes fun science activities and exciting recommended websites. Chapters in this book include: - What is science? - What do scientists do - Our Universe - What is the Earth made of? - The seasons - Weather - Living things - Cells - Plants - Animals - Your body - Bones and muscles - What happens to food? - Your brain and senses - Atoms and molecules - Solids, liquids and gases - How materials change - Energy - Forces - Hot and cold - Gravity - Floating - Friction - Magnets - Light and colour - Sound - Electricity - Computers - Science words