WorksheetsChapter 7 Magnetism
Total questions: 17
Worksheet time: 34mins
Name
Class
Date
1.
Magnets are attracted to objects that contain...
a)
iron
b)
plastic
c)
any metal
d)
rock
2.
A compass works because one end of a magnet inside will always point_________
a)
North
b)
West
c)
East
d)
Toward buried treasure
3.
Alike magnetic poles__________
a)
attract
b)
repel
c)
hang out
d)
do not exist
4.
Unlike or opposite magnetic poles__________
a)
attract
b)
repel
c)
hang out
d)
do not exist
5.
What do you call the attraction or repulsion of magnetic poles?
a)
magnetic force
b)
direct current
c)
transformer
d)
electricity
6.
A magnetic field is the___________.
a)
area of magnetic force around a magnet.
b)
where the Minnesota Twins play baseball.
c)
where electrical currents repel atoms.
d)
opposite of an electromagnet.
7.
A battery produces
a)
direct current
b)
magnetic current
c)
mechanical energy
d)
alternating current
8.
When creating an electromagnet, how can you increase its magnetic strength?
a)
Use a single wire.
b)
Tightly coil the wire with multiple loops.
c)
Decrease the electrical current.
d)
Use a weaker core.
9.
An electrical current creates a_______.
a)
magnetic field
b)
solenoid
c)
insulator
d)
magnet
10.
What is a galvanometer?
a)
It measures HUGE electrical currents.
b)
A special compass.
c)
The part of an electrical engine that attaches to wires.
d)
They were sometimes used as lie detectors.
11.
Moving a wire up and down through a magnetic field creates_______.
a)
an alternating current.
b)
an indirect current.
c)
solenoid.
d)
a superhero.
12.
What does a transformer do? (besides change from a vehicle into a fighting robot)
a)
Turns electricity into butterflies! :)
b)
It increases or decrease voltage.
c)
Increases magnetism.
d)
Stores electricity.
13.
A(n) __________ is a strong magnet that can be turned on and off.
a)
votage
b)
motor
c)
generator
d)
electromagnet
14.
Which would create the WEAKEST magnetic field? An electrical current running through____
a)
a single straight wire.
b)
a loosely looped wire (solenoid).
c)
a tightly looped wire (solenoid).
d)
a wire tightly wrapped around an iron nail.
15.
Why would an electrical current cause a compass needle not to point North?
a)
The world is ending.
b)
The current creates its own magnetic field.
c)
The wire causes the magnetic poles of Earth to change.
d)
The compass is broken.
16.
John Travoltage is converting_________________________.
a)
mechanical energy into electrical energy.
b)
electrical energy into mechanical energy.
c)
chemical energy into electrical.
d)
potential energy into kinetic energy.
17.
Which essay will be on your test?
a)
What is magnetism?
b)
Why a compass might not point North if near a current.
c)
How can iron filings be used to map a magnetic field?
d)
All of them!
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