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WorksheetsElectromagnets Review
Total questions: 21
Worksheet time: 26mins
Name
Class
Date
1.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
2.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
3.
Which of the following is shown in the picture?
a)
Electromagnet
b)
Electric generator
c)
Electric motor
d)
Transformer
4.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
5.
What is magnetism?
a)
Energy created by magnets
b)
A force created by magnets
c)
A contact force
d)
An invisible force that attracts electrically charged particles
6.
What are the ends of a magnet called?
a)
East and west poles
b)
Left and Right ends
c)
North and South ends
d)
North and South poles
7.
What is the name of the force that attracts or repels materials?
a)
current
b)
electricity
c)
magnetism
8.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
9.
If I were to try to connect the North pole of one magnet to the North pole of another magnet, the two poles would:
a)
attract
b)
repel
c)
neither
10.
If I were to try to connect the North pole of one magnet to the South pole of another magnet, the two poles would:
a)
attract
b)
repel
c)
neither
11.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
12.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
13.
What happens when a wire is wound into a coil around an iron core in an electromagnet?
a)
the wire exolodes
b)
you get electricuted
c)
the magnetic field becomes stronger
d)
the magnetic field becomes weaker
14.
While electric current is flowing through a wire, what surrounds the wire?
a)
a magnetic field
b)
a glowing light
c)
neutrons
d)
protons
15.
When two magnets attract, they ______________
a)
push apart
b)
change color
c)
get colder
d)
pull together
16.
When two magnets repel, they ________________
a)
change color
b)
pull together
c)
push apart
d)
get colder
17.
Opposite magnetic forces _____ each other.
a)
Attract
b)
Repel
18.
A north pole and a south pole will attract.
a)
True
b)
False
19.
In order to make an electromagnet, you need a
a)
battery, nail, and magnet
b)
battery, wire, and nail
c)
magnet, nail, and wire
d)
all of the above
20.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
21.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
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