What is a characteristic feature of a permanent magnet?
What Are Magnets?

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Science, Engineering, Physics, Chemistry
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6th - 12th Grade
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Hard
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5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
It has two poles, North and South.
It has a single pole.
It is made of plastic.
It can be turned on and off.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do electromagnets differ from permanent magnets?
They are made of wood.
They have only one pole.
They can be switched on and off.
They do not require electricity.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an MRI machine, what is the role of magnetism?
To cool the machine.
To realign hydrogen atoms.
To heat the body.
To create sound waves.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the function of electromagnets in loudspeakers?
To produce light.
To convert sound waves into electrical signals.
To move the cone and create sound.
To cool the speaker.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the Earth considered a magnet?
Due to its iron core creating magnetic poles.
Because it has a single pole.
Because it can be turned on and off.
Because it is made of plastic.
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