Electromagnets and magnets

How are electromagnets different from magnets?

• magnets can be turned on/off
• you can turn an electromagnet on/off
• magnets are more powerful
• magnets have a North and South pole

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Like poles on a magnet

• attract
• repel

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What is the metal center of an electromagnet called?

• The current
• the wire
• the coil
• the core

Unlike poles on a magnet

• repel
• attract

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What is this?

• magnet
• electromagnet
• series circuit
• parallel circuit

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The Earth produces its own magnetic field.  True or false?

• False
• True

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What is magnetism?

• invisible objects coming together
• a force that either attracts or repels certain materials
• full of electricity
• metals

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How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs
• Add more light bulbs and/or wire coils
• add more wire coils and/or a switch
• add more wire coils and/or batteries

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A coil that is magnetized only when an electric current flows through it is _____________.

• a battery
• a generator
• a conductor
• an electromagnet

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What are the ends of a magnet called?

• East and west poles
• Left and Right ends
• North and South ends
• North and South poles

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