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MAGNETISM

Total questions: 75

Worksheet time: 1hrs 25mins

Name
Class
Date
1.
Magnetism created by an electric current
a)
electricity
b)
electromagnetism
c)
wind energy
2.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
3.
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
4.
Iron, Nickel and cobalt are all __________________ materials
a)
Shiny
b)
poles
c)
magnetic
d)
cold
5.
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
6.
A coil that is magnetized only when an electric current flows through it is_______.
a)
a battery
b)
a generator
c)
a conductor
d)
an electromagnet
7.
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
8.
The planet earth is a giant magnet?
a)
True
b)
False
9.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
10.
A north pole and a south pole will attract.
a)
True
b)
False
11.
What would we call a nail that can pick up a paperclip because it is touching a magnet?
a)
temporary magnet
b)
poles
c)
force
d)
detector
12.
The force of magnetism is stronger when magnets are ________________
a)
cold
b)
round
c)
closer together
d)
farther apart
13.
What subject is attracted to a magnet?
a)
Silver
b)
Water
c)
Metal
d)
Iron
14.
The further two magnets are apart, the __________________ the force of magnetism.
a)
stronger
b)
weaker
c)
same
15.
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.
16.
What is the device seen here?
a)
generator
b)
electric motor
c)
electromagnet
d)
magnet
17.
A simple electromagnet can be made with which of the following?
a)
an electric current
b)
a turbine and nail
c)
a nail, a wire, and a battery
d)
a compass and a battery
18.
A student makes an electromagnet as shown above and finds that it is only strong enough to pick up one paper clip. What modification will she need to do in order to make it pick up three paper clips?
a)
wrap more coils around the nail
b)
use staples instead of paper clips
c)
replace the battery with a bar magnet
d)
use paper clips made of aluminum
19.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
20.
What subject is attracted to a magnet?
a)
Silver
b)
Water
c)
Metal
d)
Iron
21.
Ancient people discovered magnetic rocks called lodestone. What did they use them for?
a)
fires
b)
compasses
c)
sculptures
d)
weapons
22.
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
23.
What must happen for an electromagnet to have a magnetic field?
a)
It must be heated
b)
It must be touching another magnet
c)
It must be lined up with the Earth's magnetic field
d)
It must be connected to an electrical source
24.
How is Earth's magnetic field similar to that of a magnet?
a)
It is hundreds of miles long
b)
It has north and south poles
c)
It is made in Earth's core
d)
It is shaped like a horseshoe
25.
What is our best evidence that Earth has a magnetic field?
a)
All things fall toward Earth's center
b)
A compass needle lines up with it
c)
Winds blow from east to west
d)
Earth's oceans all have currents
26.
Where is Earth's magnetic field strongest?
a)
Along the outside lines
b)
Along the inside lines on either side
c)
Where the lines are close together at the poles
d)
In the space outside of the lines
27.
Earth's magnetic field and a bar magnet attract particles to the same locations. Where are they?
a)
The middle
b)
All around the outside
c)
The north and south poles
d)
First to the middle, then to the ends
28.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
29.
Which of the following is a temporary magnet?
a)
An electromagnet
b)
A needle you magnetized yourself
c)
A magnetic rock
d)
A compass
30.

Which is an example of a natural magnet.

a)

Magnogranite

b)

Maigneous

c)

Lode Stone

d)

Magnetism

31.

There are two poles on every magnet name them.

a)

East, West

b)

South, West

c)

North, East

d)

North, South

32.

Which poles attract each other?

a)

South, South

b)

North, North

c)

South, North

d)

Left, Rigfht

33.

Which is a permanent magnet.

a)

A magnet that can be turned on and off

b)

A magnet that is created with a battery

c)

A magnet that never loses it's magnetism

d)

A magnet that loses it's magnetism over time.

34.

Magnets are based on shape, name two:

a)

Triangular, Parallelogram

b)

Horseshoe, Doughnut

c)

Elongated

d)

Super encased

35.

What is a compass?

a)

A device to measure earthquakes

b)

A device to measure magnetic strength

c)

A device to measure tornadoes

d)

A device used to find earth's magnetic north

36.

What is the space around a magnet that cannot be seen called?

a)

Magnetic pull

b)

magnetic field

c)

magnetic pole

d)

magnetic strength

37.

Pick the picture describing magnetic field.

a)
b)
c)
d)
38.

When two magnets are brought close together. What are the possible outcomes?

a)

Charge, Volt

b)

Electricity, Pull

c)

Attract, Repel

d)

Push, move

39.

Which is an advantage of an electromagnet:

a)

Keep the Refrigerator door closed

b)

Permanently hold something in place

c)

Lift wood debris at the landfill

d)

Lift large metal pieces and then release them

40.

Maglev trains float on their rails, what is this called?

a)

Electrocution

b)

Levitation

c)

Leveling

d)

Train lifting

41.

What two things do you need to construct a electromagnet?

a)

Wire and magnet

b)

Wire and wood

c)

polyester and silk

d)

Plastic and wood

42.

How would you increase power to an electromagnet?

a)

Get a stronger permanent magnet

b)

use more coils with wire

c)

Add a static electricity source

d)

with a key and a kite

43.
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
44.
A paper clip is an example of a:
a)
magnetic material
b)
permanent magnet
c)
bar magnet
d)
insulator
45.
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
46.
Magnets that are arranged like this will _______. 
a)
move away from each other (repel)
b)
move towards each other (attract)
47.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles. 
d)
the middle.
48.
Iron and steel can become _____.
a)
magnetized
b)
transformed into plastics
c)
lined up to the poles
d)
part of the equator
49.

Earth acts like a giant magnet because its center is made up MOSTLY of

a)

granite

b)

limestone

c)

iron

d)

aluminum

50.
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
51.
Magnets will stick to refrigerator doors because the doors are 
a)
Painted with plastic.
b)
Made of metal.
c)
Easy to open. 
d)
Heavy.
52.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
53.

How do you magnetize a pair of scissors?

a)

stroke in many directions with a magnet

b)

stroke in one direction with a magnet

c)

stroke in one direction with some aluminum

d)

bang the scissors on a magnet

54.

If you wanted to DE-magnetize your scissors, you should...

a)

stroke them in one direction with a magnet

b)

keep them close to a strong magnet

c)

warm it up

d)

bang or drop them

e)

Both answers C and D are correct

55.

What direction do magnetic field lines always travel?

a)

south to north

b)

east to west

c)

north to south

d)

every direction

56.

A magnet cannot move which of the following objects?

a)

a paper clip

b)

a nail

c)

a toothpick

d)

a staple

57.

Earth acts like a giant magnet because its center is made up MOSTLY of

a)

granite

b)

limestone

c)

iron

58.

When two magnets attract, they ______________

a)

push apart

b)

change color

c)

pull together

59.

Magnetism is....

a)

The part of the magnet where the force is the strongest

b)

A force created by magnets that pulls some metals

60.

What happens when we rub a needle on a magnet several times?

a)

The needle breaks.

b)

The needle becomes a temporary magnet.

c)

We get a compass.

d)

The needle floats.

61.
To attract means....
a)
The part of the magnet where the force is the strongest
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
62.
To repel means....
a)
To push away
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
63.
I keep magnetism for a short amount of time. What am I?
a)
permanent magnet
b)
temporary magnet
c)
lines of force
d)
magnetism
64.
Magnetism is....
a)
The part of the magnet where the force is the strongest
b)
A force created by magnets that pulls some metals
c)
To Pull towards
d)
An object able to pull some metals towards itself
65.

What happens when you turn off the electric current used to produce a magnetic field (an electromagnet)?

a)

The magnet's strength will increase.

b)

The magnet's strength will decrease.

c)

The magnet's strength will remain the same.

d)

The poles of the magnet will switch.

66.

What characteristics do magnetic substances have?

a)

They are always black in color and cold when you touch them.

b)

They have the ability to push and pull objects.

c)

The shock you when you come in contact with them.

d)

When dropped, they will fall quickly.

67.
I am attracted to the south pole of a magnet.
a)
south pole
b)
magnetism
c)
north pole
d)
lines of force
68.
A magnet would be attracted to a rubber band.
a)
true
b)
false
69.

Heating a magnet will ______________ its magnetism.

a)

strengthen

b)

destroy

c)

not change

70.
Which statement is true?
a)
All Magnets have a North and South Pole
b)
All magnets can attract large objects
c)
Magnets can not pull through Solids.
d)
All Magnets have the Same shape and Size
71.

Maglev trains use magnets to levitate above the track. These trains float because

a)

the like poles repel

b)

the track is waxed

c)

the train has a low density

d)

a chemical change occurs

72.
If you cut a bar magnet in half, each half
a)
becomes unmagnetized.
b)
becomes a bar magnet with two poles.
c)
contains one magnetic pole.
d)
is only temporarily magnetized.
73.
How can a permanent magnet be demagnetized?
a)
Cut the magnet in half.
b)
Strike the magnet with a heavy blow.
c)
Heat the magnet up.
d)
both b and c
74.
Earth's magnetic field and a bar magnet attract particles to the same locations. Where are they?
a)
The middle
b)
All around the outside
c)
The north and south poles
d)
First to the middle, then to the ends
75.

Magnetism is considered a touching force, which means it needs to touch an object to make it move.

a)

True

b)

False