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- 1. Multiple Choice
What do the lines around this magnet represent?North PoleSouth PoleMagnetic DeclinationMagnetic Field - 2. Multiple ChoiceIf you place the North pole of a magnet next to the South pole of another magnet, they will:AttractRepelDo nothingShatter
- 3. Multiple ChoiceAs the distance between two magnets increases (they get farther apart), the force between them:IncreasesDecreasesStays the SameSwitches to the "Dark Side"
- 4. Multiple ChoiceWhat will happen when these magnets are brought close together?They will attract each other.They will repel each other.Both magnets will turn to the leftBoth magnets will turn to the right
- 5. Drop Down
After being magnetized, a (a) magnet will retain the properties of magnetism (b) . A temporary magnet is a magnet made of soft iron, that is usually easy to (c) ; however, temporary magnets lose most of their magnetic (d) when the magnetizing cause is (e) .
permanentindefinitelymagnetizepropertiesdiscontinuedelectricitygravity - 6. Multiple Choice
What can cause a magnet to lose its magnetism?
Exposing to light
Heating
All of the above
Dropping
- 7. Multiple ChoiceWhat device is made of coils of wire with an electrical current passing through it in order to generate a magnetic field?
Electromagnet
Generator
Electron Magnet
Magneto's Helmet
- 8. Drop Down
Electric motors are devices that convert (a) energy into (b) energy.
electricalmechanicalgravitationalsolar - 9. Multiple Choice
What two forces are required for generators and electric motors to work?
magnetism and thermal
electricity and thermal
electricity and magnetism
magnetism and radiant
- 10. Multiple Choice
Which of the following materials would make good conductors of electrical current?
rubber
steel
copper
wood
plastic
- 11. Match
Match the following A magnet has two regions where the force is the strongest
the push or pull of a magnet and magnetic object
to push away
the pull toward
the area around a magnet where the push or pull is felt
- 12. Multiple Choice
A junkyard needs a magnet to separate iron and nickel scraps from other items. The scraps will be placed in a container for recycling. A manager is deciding whether to purchase an electromagnet or a bar magnet. Which is the BEST reason to choose an electromagnet or a bar magnet?
An electromagnet because it attracts iron and nickel
A bar magnet because it is a permanent magnet
A bar magnet because it is stronger than an electromagnet
An electromagnet because it can be turned on and off
- 13. Multiple Choice
An electromagnet can only work if it has _____________
magnetic poles
a switch
electric current
a bar magnet
- 14. Drop Down
Which of these is a way to make an electromagnet stronger? (a)
wrapping the wire around the iron core moreputting a switch in the electrical circuitreplacing the copper wire with plastic wirereplacing the iron core with a copper core - 15. Multiple ChoiceThe force of magnetism is stronger when magnets are ________________
cold
round
closer together
farther apart
- 16. Multiple Choice
Where on a magnet is the magnetic force the strongest?
at the poles
in the middle
above the magnet
below the magnet
- 17. Labeling
Drag the terms to the correct area on the image:
answer choicesBattery
Wire
Iron Core
Magnetic Field
- Answer choicesTagsAnswer choicesTags