WorksheetsCh. 16 Electromagnetism
Total questions: 35
Worksheet time: 29mins
Name
Class
Date
1.
A magnet with strong magnetic properties is
a)
a temporary magnet
b)
a permanent magnet
c)
a ferromagnet
d)
electromagnet
2.
This is a magnet made by an electric current
a)
temporary
b)
permanent
c)
electromagnet
d)
ferromagnet
3.
This magnet loses magnetization easily
a)
temporary
b)
electromagnet
c)
ferromagnet
d)
permanent
4.
This material is hard to magnetize, but stays magnetized
a)
temporary
b)
permanent
c)
ferromagnet
d)
electromagnet
5.
Magnets point north because
a)
Earth is one giant magnet
b)
Magnets don't point north
c)
the equator shifts the planet
d)
Mrs. Owens said so...
6.
Any material that attracts iron is a(n)
a)
magnet
b)
electricity
c)
copper
d)
solenoid
7.
The points on a magnet that have opposite magnetic qualities are the
a)
magnetic poles
b)
triangles
c)
Earth's equator
d)
electromagnets
8.
The magnetic pole that points to the north is the magnet's
a)
south pole
b)
north pole
c)
east pole
d)
west pole
9.
The magnetic pole that points to the south is the magnet's
a)
south pole
b)
north pole
c)
east pole
d)
west pole
10.
The force that can either push magnets apart or pull them together is
a)
magnetic field
b)
magnetic force
c)
aurora
d)
ferromagnet
11.
The region around a magnet in which magnetic forces act is
a)
magnetic field
b)
magnetic force
c)
electromagnet
d)
ferromagnet
12.
Which of the following is NOT an example of a magnetic force?
a)
come from spinning electric charges in the magnets
b)
can push magnets apart or pull them together
c)
depend on how two magnets' poles line up
d)
are strongest at magnetic poles, where lines are closest together
13.
Which of the following is NOT an example of a magnetic field?
a)
come from spinning electric charges in the magnets
b)
are regions around magnets in which magnetic forces can act
c)
shape that can be shown with lines that surround magnets
d)
are strongest at magnetic poles, where lines are closest together
14.
Whether a material is magnetic depends on its
a)
density
b)
atoms
c)
shape
d)
mass
15.
As an electron moves, it makes, or induces a(n)
a)
aurora
b)
ferromagnet
c)
electromagnet
d)
magnetic field
16.
Materials in which the atoms' magnetic fields cancel each other out are
a)
aligned in domains.
b)
like iron, nickel, and cobalt
c)
not magnetic
d)
magnetic
17.
Which of these is true when the poles of atoms line up?
a)
The atoms cancel each other out.
b)
The atoms are arranged in a domain.
c)
The atoms make a weak magnetic field.
d)
The atoms do not become magnetic.
18.
Which of the following does NOT cause the domains of a magnet's atoms to lose alignment?
a)
Dropping the magnet
b)
Hitting the magnet too hard
c)
Increasing the temperature of the magnet
d)
Putting the magnet in the refrigerator
19.
How do you magnetize something made of iron, cobalt, or nickel?
a)
Rub one end of the magnet in one direction to align the domains.
b)
Put the materials in extreme temperatures.
c)
Melt all of the materials together
d)
These materials cannot be magnetized.
20.
TRUE OR FALSE
A magnet can not have one pole.
A magnet can not have one pole.
a)
TRUE
b)
FALSE
21.
TRUE OR FALSE
The north pole of a magnet are attracted to the north pole of another magnet.
The north pole of a magnet are attracted to the north pole of another magnet.
a)
TRUE
b)
FALSE
22.
A device that increases or decreases the voltage of an alternating current
a)
electric motor
b)
magnet
c)
transformer
d)
electric generator
23.
The interaction between electricity and magnetism
a)
electromagnetism
b)
electric generator
c)
magnetic pole
d)
transformer
24.
A device that converts electrical energy into mechanical energy
a)
electric motor
b)
solenoid
c)
magnetic field
d)
transformer
25.
The attraction or repulsion created by spinning electric charges
a)
magnetic field
b)
magnetic force
c)
electric generator
d)
electric motor
26.
As electrons move, they make
a)
electromagnetism
b)
magnetic fields
c)
ferromagnetism
d)
auroras
27.
A compass needle responds to a magnetic field, because the compass needle is a
a)
transformer
b)
generator
c)
motor
d)
magnet
28.
What can demagnetize a magnet?
a)
high altitudes
b)
low altitudes
c)
high temperatures
d)
low temperatures
29.
A coil of wire with an electric current in it is called a(n)
a)
transformer
b)
electric generator
c)
electric motor
d)
solenoid
30.
A coil of wire that has a soft iron core and that acts as a magnet when an electric current is in the coil is called a(n)
a)
ferromagnet
b)
electromagnet
c)
permanent magnet
d)
temporary magnet
31.
Increasing the number of loops per meter in the coils of a solenoid is one way to
a)
increase the wire's electric current.
b)
decrease the wire's electric current.
c)
strengthen the solenoid's magnetic field.
d)
weaken the solenoid's magnetic field.
32.
What did Faraday's experiments with magnets and electromagnetic induction demonstrate?
a)
Strong electromagnets make electric current.
b)
Electric current is made when the magnetic field changes.
c)
Strong electric current makes electromagnets.
d)
Magnetic fields are made when the electric field changes.
33.
What can you make visible by sprinkling iron filings around a magnet?
a)
the areas called domains
b)
the magnetic field lines
c)
the magnetic forces
d)
the north and south poles
34.
How does a galvanometer make use of the relationship between electric current and magnetic fields?
a)
Galvanometers generate electric current.
b)
Galvanometers change AC to DC.
c)
Galvanometers use magnets to measure current.
d)
Galvanometers use magnets to convert current into other forms of energy.
35.
Chapter 16 is about
a)
Animal cells
b)
Electricity
c)
Electromagnets
d)
The price of rice in China.
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