新综合科学 牛津原版 第1册PDF电子书下载

Unit 1　Starting ScienceThe Laboratory-a new classroom 2

Laboratory regulations　 4

Experiment and observation 6

What is Science? 8

Measuring 10

Balances and weight 12

Metre rule and length 15

Volume and measuring cylinder 16

Measuring time 18

Temperature and thermometer 22

The Bunsen burner 23

Other Laboratory skills　 28

More observation and recording 32

The Black box experiment 35

Differences between us 37

Summary 42

Difficult words 44

Unit 2　Looking at Living ThingsLooking at the living things　 46

Looking at a snail　 47

Looking at an earthworm 54

Different kinds of living things 61

Classifying living things　 62

Looking at plants　 68

Classifying animals　 76

The use of a key　 80

Grouping non-flowering plants further 82

Making a key 83

Summary 86

Difficult words 88

Unit 3　EnergyWhat is energy? 90

Different forms of energy 90

Simple energy changes 92

Energy converters 97

Our sources of electricity 98

Can energy be stored? 101

A living energy converter 102

Energy stories 103

Our energy resources 106

Some sources of our energy supply 108

Energy for the future 109

Energy out of control 110

Summary 111

Difficult words 113

Unit 4　Explaining MatterStates of matter 116

Properties of matter 117

How is matter built? 122

Can particles move? 125

Spaces between particles 129

The particle model 132

Gas pressure 136

Air pressure 136

Measuring air pressure 140

Density 143

Expansion and contraction 147

Applications of expansion 150

The Periodic Table 154

Breaking a compound 160

Summary 161

Difficult words 164

Unit 5　Solvents and SolutionsWater 166

Evaporation 172

Water in nature 175

Water and man 176

Dissolving 182

Crystals　 187

Solvents other than water 190

Paper Chromatography 192

Colloidal solution and emulsion 194

Summary　 200

Difficult words 203

Unit 6　Cells and ReproductionThe microscope 206

Cells 212

Reproduction　 215

Fertilization　 217

Reproduction in humans 220

Reproduction in plants 222

Seed growth and development 229

Dispersal of seeds 232

Development of animal embryo 233

Development inside mother 238

Growth and development 241

Summary 243

Difficult words 245

Index　 246