electromagnetism

A magnet will pick up an object that is made of...

• plastic

• iron or steel

• glass

• copper

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The strongest parts of the magnet are ...

• fronts

• backs

• poles

• middle

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The area around a magnet is called the .....

• attraction zone

• work area

• magnetic field

• hot zone

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The picture is an example of an:

• Electric circuit
• Electromagnet
• Electric nail
• Electric power cell

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What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

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A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

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Are the magnetic field lines in the picture correct?

• Yes, because they point from north to south.
• No, because they point from north to south (they're supposed to go the other way).
• Yes, because the North pole is on the left in all pictures.
• No, because the North pole is on the left in all pictures (it's supposed to be on the right).

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When running a current through a wire, what do the blue lines represent?

• The wire spinning

• A magnetic field that was created

• Electrons leaving

• Electricity

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Which one represents the magnetic field lines of magnets repelling?

• A

• B

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Electromagnetism is when

• magnetism causes electricity
• electricity causes magnetism
• electricity and magnetism cancel each other out
• a strong magnet creates a permanent magnet

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