AuthorsLynn Van Gorp

James D. Anderson, M.S.Ed.

© Teacher Created Materials #12371—Electricity and Magnetism Inquiry Handbook 3

Diagnostic Pre-test . . . . . . . . . . . . . . . . . .5

Lesson 1: What Is Electricity? AtomsandElectricity . . . . . . . . . . . . . . 11 Zap,It’sElectricity! . . . . . . . . . . . . . . . . 12 AttractingElectrons . . . . . . . . . . . . . . . 13 WhatIsElectricity?Vocabulary . . . . . . 14 LightningStrikes! . . . . . . . . . . . . . . . . . . 15 WhatIsElectricity?Journal . . . . . . . . . 16 WhatIsElectricity?Assessment . . . . . 17

Lesson 2: Uses of Electricity CelebratedScientists . . . . . . . . . . . . . . 19 DevicesThatUseElectricity . . . . . . . . 20 ElectricityIsEverywhere . . . . . . . . . . . 21 UsesofElectricityVocabulary . . . . . . . 22 CommunitiesLiving

WithoutElectricity . . . . . . . . . . . . . . 23 UsesofElectricityJournal . . . . . . . . . . 24 UsesofElectricityAssessment . . . . . . 25

Lesson 3: Static Electricity SeparatingaMixture . . . . . . . . . . . . . . . 27 ABuildupofElectrons . . . . . . . . . . . . . 28 IAmShocked! . . . . . . . . . . . . . . . . . . . . . 29 StaticElectricityVocabulary . . . . . . . . 30 VandeGraaffGenerators . . . . . . . . . . . 31 StaticElectricityJournal . . . . . . . . . . . . 32 StaticElectricityAssessment . . . . . . . . 33

Lesson 4: Conductors and Insulators ConductingandInsulating . . . . . . . . . .35 ElectricalWires . . . . . . . . . . . . . . . . . . . 36 ControllingElectronFlow . . . . . . . . . . . 37 ConductorsandInsulators

Vocabulary . . . . . . . . . . . . . . . . . . . . . 38 PowerLineMythsandFacts . . . . . . . . 39 ConductorsandInsulatorsJournal . . . 40 ConductorsandInsulators

Assessment . . . . . . . . . . . . . . . . . . . . 41

Lesson 5: Electric Circuits CompletetheCircuit . . . . . . . . . . . . . . . 43 CompleteCircuits . . . . . . . . . . . . . . . . . 44 WhatDoElectricCircuitsNeed? . . . . . 45 ElectricCircuitsVocabulary . . . . . . . . . 46 HowDoBatteriesWork? . . . . . . . . . . . . 47 ElectricCircuitsJournal . . . . . . . . . . . . 48 ElectricCircuitsAssessment . . . . . . . . 49

Lesson 6: Types of Circuits YouBetheElectrician . . . . . . . . . . . . . . 51 SeriesandParallelCircuits . . . . . . . . . . 52 ComparingCircuits . . . . . . . . . . . . . . . . 53 TypesofCircuitsVocabulary . . . . . . . . 54 DecorativeLights . . . . . . . . . . . . . . . . . . 55 TypesofCircuitsJournal . . . . . . . . . . . 56 TypesofCircuitsAssessment . . . . . . . 57

Lesson 7: Electricity and Heat NotAllSpaceHeatersAre

theSame . . . . . . . . . . . . . . . . . . . . . . . 59 UsingElectricitytoCreateHeat . . . . . . 60 FactsAboutElectricityandHeat . . . . . 61 ElectricityandHeatVocabulary . . . . . . 62 TheCostofHeat . . . . . . . . . . . . . . . . . . 63 ElectricityandHeatJournal . . . . . . . . . 64 ElectricityandHeatAssessment . . . . . 65

Lesson 8: Electricity and Light FruitandVegetablePower . . . . . . . . . .67 TypesofLightbulbs . . . . . . . . . . . . . . . . 68 ItIsAllintheDetails . . . . . . . . . . . . . . . 69 ElectricityandLightVocabulary . . . . 70 ThomasEdison:

ScientistandInventor . . . . . . . . . . . . 71 ElectricityandLightJournal . . . . . . . . 72 ElectricityandLightAssessment . . . . 73

Table of Contents

#12371—Electricity and Magnetism Inquiry Handbook © Teacher Created Materials4

Table of Contents

Lesson 9: Electricity and Sound UsingElectricitytoSendSound . . . . . . 75 HowSoundWorks . . . . . . . . . . . . . . . . . 76 VariationsofSoundWaves . . . . . . . . . . 77 ElectricityandSoundVocabulary . . . . 78 HowDoYouListentoYourMusic? . . . 79 ElectricityandSoundJournal . . . . . . . 80 ElectricityandSoundAssessment . . . 81

Lesson 10: Saving Electricity MonitorYourPowerUse . . . . . . . . . . . . 83 KnowWhatYouUse! . . . . . . . . . . . . . . . 84 WaystoSaveEnergy . . . . . . . . . . . . . . . 85 SavingElectricityVocabulary . . . . . . . 86 GeneratingElectricity . . . . . . . . . . . . . . 87 SavingElectricityJournal . . . . . . . . . . . 88 SavingElectricityAssessment . . . . . . . 89

Lesson 11: What Is a Magnet? MagneticAttraction . . . . . . . . . . . . . . . . 91 IntroductiontoMagnets . . . . . . . . . . . . 92 LearningAboutMagnets . . . . . . . . . . . . 93 WhatIsaMagnet?Vocabulary . . . . . . . 94 MagnetsAreEverywhere! . . . . . . . . . . . 95 WhatIsaMagnet?Journal . . . . . . . . . . 96 WhatIsaMagnet?Assessment . . . . . . 97

Lesson 12: Magnetic Poles AttractingandRepelling . . . . . . . . . . . . 99 UnderstandingMagneticPoles . . . . . 100 FactsAboutMagneticPoles . . . . . . . . 101 MagneticPolesVocabulary . . . . . . . . 102 MagneticVersusGeographicPoles . . 103 MagneticPolesJournal . . . . . . . . . . . . 104 MagneticPolesAssessment . . . . . . . . 105

Lesson 13: Magnetic Fields MagnetsandTheirFields . . . . . . . . . . 107 MagneticFieldsandForces . . . . . . . . 108 FactsAboutMagneticFields . . . . . . . 109 MagneticFieldsVocabulary . . . . . . . . 110 Earth’sMagneticField . . . . . . . . . . . . . 111 MagneticFieldsJournal . . . . . . . . . . . 112 MagneticFieldsAssessment . . . . . . . 113

Lesson 14: Magnetic Strength MakingaMagnet . . . . . . . . . . . . . . . . . 115 DifferentMagnets,

DifferentStrengths . . . . . . . . . . . . . 116 AllKindsofMagnets . . . . . . . . . . . . . .117 MagneticStrengthVocabulary . . . . . . 118 UsefulMagnets . . . . . . . . . . . . . . . . . . . 119 MagneticStrengthJournal . . . . . . . . . 120 MagneticStrengthAssessment . . . . . 121

Lesson 15: Electromagnets ThePowerofElectromagnets . . . . . . 123 TheStrongestMagnet . . . . . . . . . . . . . 124 FactsAboutElectromagnets . . . . . . . 125 ElectromagnetsVocabulary . . . . . . . . 126 ElectromagnetsatWork . . . . . . . . . . . 127 ElectromagnetsJournal . . . . . . . . . . . 128 ElectromagnetsAssessment . . . . . . . 129

Lesson 16: Electromagnetism and Electric Motors

MakinganElectricMotor . . . . . . . . . . 131 WhatIsanElectricMotor? . . . . . . . . . 132 MotorsandTheirParts . . . . . . . . . . . . 133 Electromagnetismand

ElectricMotorsVocabulary . . . . . . 134 BrushlessMotors . . . . . . . . . . . . . . . . . 135 Electromagnetismand

ElectricMotorsJournal . . . . . . . . . 136 Electromagnetismand

ElectricMotorsAssessment . . . . . 137

Culminating Activity: Improving Our Lives

InventionPlanningSheet . . . . . . . . . . 139 ProjectIdeas . . . . . . . . . . . . . . . . . . . . . 141 PresentationIdeas . . . . . . . . . . . . . . . . 142 ProjectRubric . . . . . . . . . . . . . . . . . . . 143 PerformanceRubric . . . . . . . . . . . . . . 144

© Teacher Created Materials #12371—Electricity and Magnetism Inquiry Handbook 131

Lesson 16Name ____________________________________

Electromagnetism and Electric MotorsMaking an Electric MotorDirections: Follow the steps below to answer the question. Develop a hypothesis and complete your research. Use the materials your teacher has provided to build an electric motor. Record your observations and draw a conclusion. Present your research and electric motor on poster board.

QuestionHow do electromagnets help electric motors work?

HypothesisFormulate your hypothesis. (What is the answer to the question?) Write your hypothesis.

Exploring the Research 1. Research the question above using the Internet or school library. 2. Use the directions and materials given to you by your teacher to build an

electric motor with an electromagnet. 3. Create a poster that displays your motor and explains how it works.

Include the data that you gathered during your research and pictures or illustrations of the motor you built.

4. Present your poster and electric motor to the class.

ObservationsHow did your motor turn out? Record your observations.

ConclusionWhat is the answer to the question? Do your findings support your hypothesis? What did you learn from your research? Write your conclusions.

#12371—Electricity and Magnetism Inquiry Handbook © Teacher Created Materials132

Lesson 16

Electromagnetism and Electric MotorsWhat Is an Electric Motor?An electric motor is a machine that turns electrical energy into mechanical energy. Mechanical energy is energy that can make things move. There are many types of electric motors. Some motors are very small. A small motor can move the parts of an electric toothbrush. Other motors are much larger. They can move large trains. Smaller motors can be powered with batteries. Larger motors need to be powered by generators. Motors are in many types of machines and appliances. They are in refrigerators. They are in dishwashers and microwaves. They are even in DVD players and computer printers.

How Electric Motors WorkMotors use two types of magnets to create motion. One type is called a permanent magnet. The permanent magnets have north and south poles that never change. A motor also has an electromagnet. The poles of the electromagnet do change. This change creates movement.

There are different parts inside an electric motor that work with the magnets to help the motor run. The following parts are the main parts of a motor:

• armature: The armature is the part of a motor that receives power from a battery or other electrical source. This part of the motor includes the electromagnets.

• axle: The axle is the metal shaft inside a motor. It can be attached to a rotor in some motors. In this case, it is a moving part. In other motors it is not attached to the rotor. The axle in these motors is a nonmoving part. The rotor moves around the axle in these motors.

• commutator: The commutator is a switch that can reverse the magnetic poles of the electromagnets in a motor. This causes the two types of magnets in a motor to attract and repel each other—creating movement.

• rotor:The rotor is the moving part of a motor. • stator: The stator is the nonmoving part of a motor.

axle

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stator

© Teacher Created Materials #12371—Electricity and Magnetism Inquiry Handbook 133

Lesson 16Name ____________________________________

Electromagnetism and Electric MotorsMotors and Their PartsDirections: Write the names of the parts of a motor and a few words to describe each part in the ovals provided.

partsofamotor

#12371—Electricity and Magnetism Inquiry Handbook © Teacher Created Materials134

Name ____________________________________Lesson 16

Electromagnetism and Electric MotorsElectromagnetism and Electric Motors VocabularyDirections: Write the vocabulary word or phrase next to its definition. Choose words from the Word Box below.

Word Box armature commutator rotor stator

Directions: Write a poem about an electric motor and how it works. Try to use all the vocabulary words in your poem.

ElectricMotors

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

VocabularyWord Definition

1. a switch that reverses the direction of an electric current

2. the moving part of a motor

3. the nonmoving part of a motor

4. the part of a motor that receives power from a battery or other power source

© Teacher Created Materials #12371—Electricity and Magnetism Inquiry Handbook 135

Lesson 16

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