Page 2 - 新思维科学活动用书7 样章

Contents
How to use this book
Contents

How to use this book 3

Acknowledgements 4

1 Cells 5

1.1 Plant cells 5
1.2 Animal cells 9

1.3 Specialised cells 11
1.4 Cells, tissues and organs 15

2 Materials and their structure 20

2.1 Solids, liquids and gases 20

2.2 Changes of state 25
2.3 Explaining changes of state 30

2.4 The water cycle 34
2.5 Atoms, elements and the Periodic Table 36

2.6 Compounds and formulae 38
2.7 Compounds and mixtures 42

3 Forces and energy 46

3.1 Gravity, weight and mass 46

3.2 Formation of the Solar System 52
3.3 Movement in space 56

3.4 Tides 59
3.5 Energy 63

3.6 Changes in energy 67
3.7 Where does energy go? 70

4 Grouping and identifying organisms 74

4.1 Characteristics of living organisms 74
4.2 Viruses 78

4.3 What is a species? 80

4.4 Using keys 85

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