1: What is science? 2: The living world 1: What do living things need to survive? 2: What is an animal? 3: How big are bacteria? 4: How do plants grow? 5: What makes things sticky? 6: Are spiders insects? 7: What are feathers for? 8: Which animals have fur? 9: What do lions eat? 10: How do butterflies grow? 11: Why don't polar bears freeze? 12: How do we know dinosaurs existed?

3: Human body 1: What is my body made of? 2: How big is my skin? 3: What do bones do? 4: How do people move? 5: How do I breathe? 6: What makes my blood move? 7: Where does my food go? 8: What controls my body? 9: How do cuts heal? 10: How does my body fight sickness?

4: The material world 1: What is everything made of? 2: Why does chocolate melt? 3: How can I get salt out of saltwater? 4: What is a metal? 5: How is plastic made? 6: What makes fireworks explode? 7: Why is lemon juice sour?

5: Energy 1: Where does energy go? 2: How do we see colours? 3: How does sound move? 4: How does heat move? 5: What is electricity? 6: How do lights turn on? 7: How can I make my hair stand on end? 8: Can you make electricity from a magnet? 9: Where does coal come from?

6: Forces and movement 1: What makes things speed up or slow down? 2: What stops things slipping? 3: How do magnets pull? 4: How can I move something more easily?5: What makes cars go? 6: What stops us floating away? 7: How do planes stay in the air?

7: Our planet 1: How deep can a hole get? 2: Why does the ground shake? 3: Where does rain come from? 4: Why is planet Earth blue? 5: Where does wind come from? 6: What's inside a hurricane? 7: Where does planet Earth end? 8: Where does the Moon go? 9: Can we live on other planets? 10: What is space made from? 11: How do people travel into space?

8: Answers 9: Quiz your friends! 10: Glossary 11: Index 12: Acknowledgments