Magnetism Review

If you wanted to use one magnet to pick up another magnet, what should you do?

• Touch the first magnet's north pole to the second magnet's north pole.

• Touch the first magnet's south pole to the second magnet's south pole.

• Touch the first magnet's north pole to the second magnet's south pole.

• Demagnetize both magnets so neither one has a north or south pole.

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NGSS.MS-PS2-5

Like poles of magnets ________________.

• attract

• repel

• stick together

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In the circuit shown, explain why there is no magnetic field produced.

• the coil of wire is not lightly wrapped

• the switch is closed

• the switch is open

Which of the following could increase the strength of an electromagnet?

• add more loops of wire

• take away loops of wire

• change the direction of the current

Which of the following transforms mechanical energy into electrical energy to power a hair dryer?

• motor

• generator

• electromagnet

The rumble feature on a video game controller is driven by a device that turns electrical energy into mechanical energy. What is the device called?

• motor

• an electromagnet

• an electric generator

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How would a larger core in an electromagnet affect its strength?

• make the electromagnet stronger

• make the electromagnet weaker

• it would not change the strength of the electromagnet

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Which of the following describes a ferromagnetic material?

• a material that conducts electricity

• a material that does not have a magnetic field

• a material that can be turned into a magnet

• a material made of non-metals

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Which magnets will REPEL?

• Magnet 1

• Magnet 2

• Magnet 3

• Magnet 4

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Which magnet will ATTRACT the most?

• Magnet 1

• Magnet 2

• Magnet 3

• Magnet 4

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