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