Electricity and Magnetism Science Fair Projects, Revised and Expanded Using the Scientific Method

Overview

How does an electrical switch work? How can you demonstrate the presence of a magnetic field? What effect does a magnetic field have on current? Using easy-to-find materials and the scientific method, you can learn the answers to these questions and more. If you are interested in competing in science fairs, the book contains lots of great suggestions and ideas for further experiments.

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Electricity and Magnetism Science Fair Projects, Revised and Expanded Using the Scientific Method

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Overview

How does an electrical switch work? How can you demonstrate the presence of a magnetic field? What effect does a magnetic field have on current? Using easy-to-find materials and the scientific method, you can learn the answers to these questions and more. If you are interested in competing in science fairs, the book contains lots of great suggestions and ideas for further experiments.

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Editorial Reviews

Children's Literature - Amy S. Hansen
Part of the "Physics Science Projects Using the Scientific Method" series, award-winning author Gardner provides clear descriptions of both the method of putting together an experiment and the theory involved. Topics include: Static Electricity; Moving Charges; Magnets and Magnetic Fields; Magnetism from Electricity; Electricity, Magnets and Motors; and Electricity and Chemistry. While electricity projects may seem more of engineering and less actual experimentation, Gardner comes up with good questions for students to answer both for the book and for a science fair. To use this book for a science fair, students would still need to work out the question that they would investigate, but Gardner offers fruitful topics for investigation. For example, after looking at a simple circuit, the topic area marked Science Project Ideas suggests: "Take a flashlight apart. Can you figure out how it works?" and "Build a flashlight of your own design." As with the whole series, this book will be useful for upper elementary and middle school students. Backmatter includes lists of science supply companies, lists of further reading suggestions, and an index. Reviewer: Amy S. Hansen
VOYA - Marilyn Brien
The new "Science Projects Using the Scientific Method" series is an expansion and revision of the very popular science projects series of the 1990s. The new series includes volumes in biology, chemistry, physics, and the earth. They are a welcome addition to available resources for students and teachers who want to engage in the scientific process in simple, yet meaningful, ways. Other titles in the series include Planet Earth Science Fair Projects, Genetics and Evolution Science Fair Projects, and Weather Science Fair Projects. Each volume has an introduction explaining the scientific method and how to utilize this process to investigate a wide range of topics. Organic Chemistry Science Fair Projects investigates different methods of leavening in baking, as well as projects such as chromatography and testing for basic food groups. The revised edition of Electricity and Magnetism Science Fair Projects contains some of the same projects as in the 1994 volume but with expanded instructions that include colorful illustrations. Additional projects found in the revised book include the Morse Code and a burglar alarm. The activities in all of the volumes in this series involve activities of high interest to youth and utilize materials that are inexpensive and readily available. As resources for science fair projects the most appropriate level would be at the upper elementary or middle school level. High school science fair projects are much more sophisticated. These titles are, however, recommended for high school as well because they are so valuable as resources for activities and demonstrations in the classroom, or for activities outside the formal classroom. Safety guidelines are provided to advise students about whether or not they need adult supervision. All of these volumes should be a priority for any library serving youth at all levels, even if the library has the earlier editions. (Science Projects Using the Scientific Method) Reviewer: Marilyn Brien
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Product Details

Table of Contents

Introduction: Electricity and Magnetism Science Fair Projects Using the Scientific Method 7

How Scientists Search for Answers 10

Using the Scientific Method in Experiments and Projects 12

Science Fairs 20

Safety First 24

1 Static Electricity: Charges at Rest 27

1.1 Getting Charged 29

1.2 Inducing Charge 34

1.3 Detecting Charge: An Electroscope 37

1.4 Some Static Effects 41

2 Moving Charges 45

2.1 A Simple Electric Circuit 48

2.2 Building Circuits 50

2.3 Series and Parallel Circuits 54

2.4 Switches 56

2.5 Flow of Charge Around a Circuit 59

2.6 Sending Messages Electrically 61

2.7 Short Circuit: The Easy Path 64

2.8 Resistors: The Hard Path 68

2.9 A Burglar Alarm Circuit 72

2.10 A Fuse for Safety 75

3 Magnets and Magnetic Fields 79

3.1 Two Magnets 80

3.2 A Magnetic Field 86

3.3 Magnets, Magnetic Matter, and Nonmagnetic Matter 90

3.4 Unmaking a Magnet 93

3.5 Can a Magnetic Field Act Through Materials? 96

4 Magnetism From Electricity 99

4.1 Oersted's Discovery 100

4.2 An Electric Current's Magnetic Field 102

4.3 An Electric Meter 105

4.4 Using an Electric Meter to Test for Conductivity 108

4.5 Magnetic Coils 111

4.6 Electromagnets 114

5 Electricity, Magnets, and Motors 119

5.1 A Current in a Magnetic Field 120

5.2 A Current in a Magnetic Field and Motors 125

5.3 A Current from a Magnetic Field 133

6 Electricity and Chemistry 139

6.1 Inside a Daniell Cell 141

6.2 Inside a D Cell 146

6.3 The Minimum Ingredients for an Electric Cell 149

Appendix: Science Supply Companies 155

Further Reading 156

Internet Addresses 157

Index 158

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