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Magnets and Electromagnets
Science for Kids
"Just a quick look at the basics of magnets and electromagnets."
15 Points Per Correct Answer - No time limit
When talking about magnets, what word is the opposite of attract?
If you hang a magnet so it is free to swing and turn, what have you created?
If I bring a North and South Pole together which word or phrase best describes what happens?
Which pole of a magnet in a compass points north?
None of these
What advantage does an electromagnet have over a permanent magnet?
A permanent magnet cannot be used to pick up nickel.
An electromagnet can be used for picking up more metals.
An electromagnet can be switched off.
An electromagnet is lighter.
How can an electromagnet be made stronger?
Add an iron core.
Add more coils of wire.
Increase the voltage.
All of these answers are correct.
Which of these devices uses a magnet or electromagnet to make it work?
All of these devices use a magnet or electromagnet.
An electric bell
A compact disc
Which of these metals are attracted to a magnet?
All of these.
In which direction do the field lines go around a magnet?
It's different for every magnet
From south to north
From north to south
Where are the field lines most concentrated around a bar magnet?
At the centre.
At the North Pole.
At the South Pole.
At both poles.
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Compiled May 20 13