Page 3 - 新思维科学活动用书4 样章
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Contents
4.3 Earthquakes 56
4.4 Different habitats 59
5 Light 63
5.1 How we see things 63
5.2 Light travels in straight lines 66
5.3 Light reflects off different surfaces 69
5.4 Light in the solar system 72
5.5 Day and night 77
5.6 Investigating shadow lengths 80
6 Electricity 83
6.1 Which materials conduct electricity? 83
6.2 Does water conduct electricity? 87
6.3 Using conductors and insulators in electrical appliances 89
6.4 Switches 93
6.5 Changing the number of components in a circuit 96
Acknowledgements 100
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