Switch on,switch off
ISBN： 978081249203
作者： Melvin Berger;Carolyn Croll
出版社： Perfection Learning
出版日期：
年齡/主題/大獎(jiǎng)/大師：
6-8(1-2年級(jí))、8-10(3-4年級(jí))、英文、
內(nèi)容簡(jiǎn)介
The "magic" of a light switch is made accessible to everyone with this crystal-clear introduction to electricity, from the generator to the individual light bulb. Includes an experiment.
編輯推薦
The switch goes up -- the light goes on,
The switch goes down -- the light goes off.It seems like magic Its not -- its electricity. But how does a light actually work? In this clear and simple book learn all about electricity, how its produced, and how it can be used. At the end youll learn how to conduct fun experiments that will let you generate electricity yourself
書摘與插圖
