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- 1. Multiple Choice
Surrounding every magnet is a __________ __________.magnetic fieldelectrical currentanother magnetan enemy - 2. Multiple ChoiceWhat two forces are required for generators and electric motors to work?magnetism and thermalelectricity and thermalelectricity and magnetismmagnetism and radiant
- 3. Multiple ChoiceElectricity is the flow of _________.ProtonsNeutronsElectrons
- 4. Multiple ChoiceGenerators are devices that convert _____ energy into _____ energy.chemical; mechanicalmechanical; electricalelectrical; mechanicalpotential; kinetic
- 5. Multiple Choice
In a _______ a spinning turbine moves magnets which generates an electric current.
Motor
Generator
- 6. Multiple ChoiceWhat can you use to make an electromagnet?Battery, nail and stringBattery, pencil and wireWire, battery and iron ore (nail)Peanut butter, lampshade, hand sanitizer
- 7. Multiple ChoiceElectric fields are often associated with what other kind of field?Magnetic FieldsNuclear FieldsParticle FieldsCorn Fields
- 8. Multiple ChoiceWhat device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?ElectromagnetGeneratorElectron MagnetMotor
- 9. Multiple ChoiceWhat happens to the strength of an electromagnet as you add more coils around it?IncreasesDecreasesStays the sameStops completely
- 10. Multiple ChoiceHow are electromagnets different from magnets?magnets can be turned on/offyou can turn an electromagnet on/offmagnets are more powerfulmagnets have a North and South pole
- 11. Multiple Choice
What is the transfer of energy in when you plug in a motor and it spins?
chemical to mechanical
electrical to mechanical
mechanical to electrical
physical to potential
- 12. Multiple ChoiceWhat energy do you put IN to a generator?MechanicalElectricalThermalPotential
- 13. Multiple ChoiceWhat type of energy comes OUT of a generator?MechanicalElectricalThermalPotential
- 14. Multiple ChoiceIn an electric motor, the energy transformation begins as ----electrical and becomes chemicalmechanical and becomes electricalelectrical and becomes mechanicalmechanical and becomes chemical
- 15. Multiple ChoiceA material in which electrons are able to move easilyCircuitInsulatorResistanceConductor
- 16. Multiple Choice
In an electric generator, the energy transformation begins as ----
electrical and becomes chemical
mechanical and becomes electrical
electrical and becomes mechanical
mechanical and becomes chemical
- 17. Multiple ChoiceIron, Nickel and cobalt are all __________________ materialsShinypolesmagneticcold
- 18. Multiple ChoiceWhen two magnets attract, they ______________push apartchange colorget colderpull together
- 19. Multiple ChoiceWhen two magnets repel, they ________________change colorpull togetherpush apartget colder
- 20. Multiple ChoiceTrue or False: A magnetic field is invisible.TrueFalse
- Answer choicesTagsAnswer choicesTags