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WorksheetsMagnetism
Total questions: 47
Worksheet time: 39mins
Name
Class
Date
1.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
2.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
3.
A device that is able to reverse the direction of current in an electromagnet causing a motor to spin the opposite way is known as:
a)
a rotor
b)
a generator
c)
a magnet
d)
a commutator
4.
If you place the North pole of a magnet next to the South pole of another magnet, they will:
a)
Attract
b)
Repel
c)
Do nothing
d)
Shatter
5.
On Earth, where is Magnetic North approximately located?
a)
The Equator
b)
The North Pole
c)
The South Pole
d)
New Brighton
6.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
7.
If you cut a magnet in half, what happens to the poles?
a)
One half gets the North Pole, the other half gets the South Pole
b)
Both halves get only a North Pole
c)
Both halves get only a South Pole
d)
Both halves get a North pole and a South Pole
8.
What is responsible for the Magnetic Field around Earth?
a)
The Earth's crust
b)
The Earth's molton iron core
c)
The Earth's mantel
d)
The Sun
9.
A refrigerator magnet is an example of a:
a)
magnetic material
b)
permanent magnet
c)
horseshoe magnet
d)
temporary magnet
10.
A paper clip is an example of a:
a)
magnetic material
b)
permanent magnet
c)
bar magnet
d)
insulator
11.
Magnetic force can pass through many materials (paper, plastic, etc.)
a)
True
b)
False
12.
An electromagnet's poles may be reversed by:
a)
decreasing the voltage of the coil
b)
increasing the number of coils
c)
changing the direction of current flow
d)
altering the material used to make the coils
13.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
14.
Two north poles will attract.
a)
True
b)
False
15.
The force of magnetism is stronger when magnets are ________________
a)
cold
b)
round
c)
closer together
d)
farther apart
16.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
17.
Where is the strongest attraction force of the magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
18.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
19.
A device that uses a free-moving magnetic needle to show direction is a:
a)
Ruler
b)
magnet
c)
compass
d)
magnetic field
20.
The atoms of a magnetized substance organize into regions in which the magnetic fields of the atoms are aligned.
a)
spins
b)
domains
c)
energy levels
d)
arrangements
21.
In un-magnetized materials the domains are __________ aligned.
a)
super
b)
slightly
c)
randomly
d)
always
22.
A student sprinkled iron filings around a bar magnet and observed that the filings formed the pattern shown below. The magnetic field is strongest at point
a)
A
b)
B
c)
C
d)
D
23.
Which of the following shows the magnetic field correctly around a bar magnet?
a)
A
b)
B
c)
C
d)
D
24.
As you bring two magnets closer together, the magnetic force between them
a)
increases regardless of whether they are repelling or attracting
b)
decreases regardless of whether they are repelling or attracting
c)
increases but only if they are attracting
d)
increases but only if they are repelling
25.
What subject is attracted to a magnet?
a)
Silver
b)
Water
c)
Metal
d)
Iron
26.
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
27.
True or False: All metals stick to magnets.
a)
True
b)
False
28.
True or False: An electromagnet can function without electricity.
a)
True
b)
False
29.
What is an electromagnet?
a)
a temporary magnet made from current carrying wire around a magnetic metal core.
b)
a permanent magnet with a north and south pole
30.
Which statement is true about Earth’s magnetic field?
a)
Magnetic field lines run from geographic north to south.
b)
Magnetic field lines start and stop at the surface of Earth
c)
North magnetic pole isn't the same as north geographic pole.
d)
A compass operates using the electric field of Earth.
31.
How does an electromagnet work?
a)
You push a magnet into an electrical socket
b)
Wrap wire around a nail and touch it to a magnet
c)
Run electrical current through a coil of wire
d)
push an iron nail into an electrical socket
32.
Which statement is true?
a)
Magnetic field lines run from a south pole to a north pole.
b)
Magnetic field lines run from a north pole to a south pole.
c)
There are no magnetic field lines inside a magnet.
d)
Iron is attracted to north pole but repelled from south pole
33.
An electromagnet's poles may be reversed by:
a)
decreasing the voltage of the coil
b)
increasing the number of coils
c)
changing the direction of current flow
d)
altering the material used to make the coils
34.
Generators are devices that convert _____ energy into _____ energy.
a)
chemical; mechanical
b)
mechanical; electrical
c)
electrical; mechanical
d)
potential; kinetic
35.
Electric motors are devices that convert _____ energy into _____ energy.
a)
electrical; mechanical
b)
mechanical; electrical
c)
chemical; potential
d)
mechanical; kinetic
36.
A coil of wire acts like a magnet when __________________ flows through it.
a)
water
b)
current
c)
voltage
d)
food
37.
True or False: All metals stick to magnets.
a)
True
b)
False
38.
How are magnets and electricity related?
a)
Magnets can be used to make electricity.
b)
Electricity can be used to made a magnet.
c)
Both A and B are true.
39.
It is
possible for a magnet to have only one pole.
a)
True
b)
False
40.
The
first practical use of natural magnets was navigation.
a)
True
b)
False
41.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
42.
How many poles does a magnet have?
a)
1
b)
2
c)
3
d)
4
43.
The source of all magnetism is
a)
tiny pieces of iron
b)
tiny domains of aligned atoms
c)
ferromagnetic materials
d)
moving electric charge
44.
Moving electric charges will interact with
a)
an electric field
b)
a magnetic field
c)
both of these
d)
none of these
45.
Surrounding every moving electron is
a)
a magnetic field
b)
an electric field
c)
both of these
d)
none of these
46.
This substance is
a)
magnetizecd
b)
unmagnetized
c)
positively charged
d)
negatively charged
47.
You know this substance is magnetized because
a)
all the domains have right angles
b)
the arrows are drawn in red
c)
the domains are aligned
d)
the domains are random
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