Magnetism, Electromagnets and Induction

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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An electric motor changes electrical energy to _________ energy.

• mechanical

• chemical

• potential

• electrical

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What is the device seen here?

• generator
• electric motor
• electromagnet
• magnet

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Magnetism is a type of ____________

• force
• book
• plant
• animal

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_________ are magnets that are created when there is electric current flowing in a wire.

• Electromagnets

• Magic magnets

• Potential magnets

• Chemical energy

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What do the lines around this magnet represent?

• North Pole
• South Pole
• Magnetic Declination
• Magnetic Field

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As the distance between two magnets increases (they get farther apart), the force between them:

• Increases
• Decreases
• Stays the Same

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If you cut a magnet in half, what happens to the poles?

• One half gets the North Pole, the other half gets the South Pole
• Both halves get only a North Pole
• Both halves get only a South Pole
• Both halves get a North pole and a South Pole

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The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

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What 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 left
• Both magnets will turn to the right

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