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WorksheetsElectromagnetism Introduction
Total questions: 25
Worksheet time: 14mins
Name
Class
Date
1.
What does attract mean?
a)
to pull apart
b)
to jump
c)
to come together
d)
to shop
2.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
3.
Which object would a magnet attract?
a)
a glass bottle
b)
a piece of paper
c)
a metal paper clip
d)
a rubber eraser
4.
What happens when two bar magnets repel each other?
a)
The poles of the magnets pull toward each other.
b)
The poles of the magnets push away from each other.
c)
The centers of the magnets pull toward each other.
d)
The centers o the magnets push away from each other.
5.
What are the north and south ends of a magnet called?
a)
borders
b)
tips
c)
caps
d)
poles
6.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
7.
Which of the following is true of a bar magnet?
a)
Its magnetic field is strongest near its center.
b)
It is surrounded by a magnetic field.
c)
The north pole is stronger than the south pole.
d)
The south pole is stronger than the north pole.
8.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
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.
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
11.
Which of the following can provide an electric current for the wire in an electromagnet? (Hint: source)
a)
wire
b)
iron nail
c)
battery
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 electrocuted
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.
How do you make an electromagnet?
a)
wrap a battery in wire and connect it to an iron nail.
b)
wrap a wire with another wire and connect it to an iron nail.
c)
wrap an iron nail in wire and connect it to a power source.
d)
wrap an iron nail in wire and connect it to another iron nail.
16.
What are three ways to make an electromagnet stronger?
a)
1. add more coils of wire around the iron core
2. add more electricity flowing through the wire
3. wrap a thinner wire around the core
2. add more electricity flowing through the wire
3. wrap a thinner wire around the core
b)
1. add less coils of wire around the iron core
2. add more electricity flowing through the wire
3. wrap a thinker wire around the core
2. add more electricity flowing through the wire
3. wrap a thinker wire around the core
c)
1. add more coils of wire around the iron core
2. add less electricity flowing through the wire
3. wrap a thicker wire around the core
2. add less electricity flowing through the wire
3. wrap a thicker wire around the core
d)
1. add more coils of wire around the iron core
2. add more electricity flowing through the wire
3. wrap a thicker wire around the core.
2. add more electricity flowing through the wire
3. wrap a thicker wire around the core.
17.
How were we able to turn the electromagnet off?
a)
Hooking the wire up to the battery/
b)
Moving the battery further away from metal objects
c)
Disconnecting the circuit to stop current flow
18.
What is the device seen here?
a)
generator
b)
electric motor
c)
electromagnet
d)
magnet
19.
Which device uses mechanical energy to produce electrical energy?
a)
Electric Motor
b)
Magnet
c)
Generator
d)
Solar Cell
20.
Electric fields are often associated with what other kind of field?
a)
Magnetic Fields
b)
Nuclear Fields
c)
Particle Fields
d)
Corn Fields
21.
What happens to the strength of an electromagnet as you add more coils around it?
a)
Increases
b)
Decreases
c)
Stays the same
d)
Stops completely
22.
What does a motor do?
a)
Moves up and down
b)
Rotates without electricity
c)
It does
d)
Uses electricity to rotate
23.
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
24.
What is created when a wire moves between the poles of a magnet?
a)
A. a ferromagnet
b)
B. a solenoid
c)
C. an electromagnet
d)
D. an electric current
25.
A compass needle responds to a magnetic field, because the compass needle is a
a)
A. generator.
b)
B. motor.
c)
C. magnet.
d)
D. transformer.
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