Page 2 - 新思维科学活动用书4 样章
P. 2
Contents
Contents
How to use this book 3
1 Living things 4
1.1 Bones and skeletons 4
1.2 Why we need a skeleton 7
1.3 Skeletons and movement 11
1.4 Different kinds of skeletons 14
1.5 Medicines and infectious diseases 17
2 Energy 19
2.1 Energy around us 19
2.2 Energy transfers 22
2.3 Energy changes 27
2.4 Energy and living things 30
3 Materials 34
3.1 Materials, substances and particles 34
3.2 How do solids and liquids behave? 37
3.3 Melting and solidifying 41
3.4 Chemical reactions 46
4 Earth and its habitats 50
4.1 The structure of the Earth 50
4.2 Volcanoes 53
1
