Page 3 - 新思维科学活动用书8 样章
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Contents
5.2 Purity 93
5.3 Weather and climate 99
5.4 Climate and ice ages 105
5.5 Atmosphere and climate 108
6 Light 113
6.1 Reflection 113
6.2 Refraction 117
6.3 Making rainbows 120
6.4 Colours of light 124
6.5 Galaxies 127
6.6 Rocks in space 131
7 Diet and growth 136
7.1 Nutrients 136
7.2 A balanced diet 140
7.3 Growth, development and health 146
7.4 Moving the body 155
8 Chemical reactions 161
8.1 Exothermic reactions 161
8.2 Endothermic reactions 168
8.3 Reactions of metals with oxygen 171
8.4 Reactions of metals with water 174
8.5 Reactions of metals with dilute acids 177
9 Magnetism 186
9.1 Magnetic fields 186
9.2 The Earth as a giant magnet 189
9.3 Electromagnets 195
9.4 Investigating electromagnets 199
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