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基础科学 Basic Science2025|PDF|Epub|mobi|kindle电子书版本百度云盘下载
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- 机械工业部部属院校编 著
- 出版社:
- ISBN:
- 出版时间:1983
- 标注页数:0页
- 文件大小:38MB
- 文件页数:128页
- 主题词:
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图书目录
INTRODUCTION1
CHAPTER ONE:THE SCIENTIST AT WORK1
1.What Is Science?1
2.Observation2
3.Instruments3
4.Questions5
5.Experimenting6
6.Finding Answers9
7.Stating a Problem10
8.An Hypothesis12
9.The Answer13
10.Summing Up15
CHAPTER TWO:EXPERIMENTING WITH ELECTRICITY17
1.What Is Electricity?17
2.Using Electricity18
3.The Dry Cell19
4.Sockets and Wires20
5.Lighting a Bulb22
6.A Complete Circuit and a Switch24
7.Conductors and Nonconductors26
8.A Short Circuit28
9.A Fuse30
10.Heat and Electricity32
11.The Electric-Light Bulb33
12.Wiring the Circuits35
13.Batteries and Ways to Obtain Electricity37
14.Adding Volts38
15.Electricity in Review40
CHAPTER THREE:USING MACHINES41
1.AMachine41
2.The Lever42
3.Kinds of Levers44
4.A Lever for Experimenting46
5.Pulleys48
6.Wheel and Axle50
7.The Inclined Plane53
8.The Screw55
9.The Wedge57
10.The Power Shovel58
11.Elevators60
CHAPTER FOUR:WORKING WITH CHEMICALS63
1.Molecules and Atoms & Elements and Com-pounds63
2.Matter and Change66
3.Describing Chemical Changes69
4."Breaking"a Compound & Making a Com-pound73
5.Some Important Chemical Changes76
6.Chemicals Every Day78
CHAPTER FIVE:INTO SPACE WITH SATELLITES79
1.Launching Satellites79
2.Rocket Power81
3.Satellite Rockets82
4.Satellites—Up and Down84
5.Satellite Instruments86
词汇表89
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