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Magnetism worksheet

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.
A magnet will pick up a nail, but not a penny because the nail
a)
has rust on it.
b)
is lighter than the penny.
c)
has a sharp point.
d)
contains iron.
2.
When you put ring magnets on a pencil, the magnets stay apart from each other because
a)
magnets are too weak to stay together.
b)
material that makes up the magnets aren't magnetic.
c)
same poles of the magnets are facing each other.
d)
the pencil stops the force of the magnets.
3.
Magnets will stick to refrigerator doors because the doors are 
a)
Painted with plastic.
b)
Made of metal.
c)
Easy to open. 
d)
Heavy.
4.
Which is NOT a use of magnets?
a)
Generating electricity
b)
Holding cabinet doors closed
c)
Sorting paper from plastic
d)
Storing information on computer hard drives.
5.

What is a Natural Magnet known as?

a)

A. LODESTONE

b)

B. HAEMATITE

c)

C. MAGNETITE

d)

D. B AND C

6.

Where is the the pushing or pulling force of a magnet strongest?

a)

In the middle of the magnet

b)

At the ends of the magnet

c)

Same all the way through the magnet

d)

none of them

7.
What subatomic particle causes magnetism in an atom? 
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
8.

How is Earth's magnetic field similar to that of a magnet?

a)

It's shaped like a horseshoe.

b)

It has north and south poles.

c)

It is made plastic.

d)

It is hundreds of miles long.

9.
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.
10.
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
11.

Why does a compass needle point north?

a)

Because it is being attracted to the Magnetic South Pole

b)

Because north is up

c)

Because it is being attracted to the Magnetic North Pole

d)

Because north is down

12.

A group of atoms that has all like poles pointing in the same direction are called

a)

magnetic forces

b)

magnetic fields

c)

magnetic domains

d)

magnetic poles

13.

The place on a magnet where the force it exerts is the strongest is called

a)

a magnetic pole

b)

a magnetic field line

c)

a domain

14.

Which type of magnet loses magnetism outside of a magnetic field?

a)

a strong magnet

b)

a temporary magnet

c)

a permanent magnet

d)

an electromagnet

15.

Which item would the magnetic domains be the most unaligned?

a)

glass jar

b)

steel nail

c)

bar magnet

16.

Which item would have the most aligned domains?

a)

a pencil eraser

b)

an iron railing

c)

an aluminum can

17.

What are the two magnetic forces?

a)

attraction

b)

equilibrium

c)

magnetic acceleration

d)

repulsion

18.

The entire region surrounding a magnet is known as the:

a)

Magnetic Domain

b)

Lodestone

c)

A Compass

d)

Magnetic Field

19.

Which metal can be attracted to magnets?

a)

Copper

b)

Aluminum

c)

Iron

d)

Gold

20.
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
21.
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
22.
This substance is
a)
magnetizecd
b)
unmagnetized
c)
positively charged
d)
negatively charged
23.
To make this electromagnet stronger you could
a)
use less wire
b)
have fewer wire coils around the nail
c)
have more wire coils around the nail
d)
use a plastic core
24.

What is the name of a magnet that stays magnetic only while it touches a permanent magnet, or one that is magnetic for a very short time?

a)

Temporary magnet

b)

Semi-Permanant magnet

c)

Electromagnet

d)

Natural Magnet

25.
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
26.
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
27.

What is the name of a magnet that is incredibly strong and have been known to break bones as they come together?

a)

Temporary magnet

b)

Natural magnet

c)

Electromagnet

d)

Lodestone

e)

Neodymium magnet

28.

The Right Hand Rule relates the variables:

a)

Current, Magnetic Field and Magnetic Force

b)

Current, Magnetic Field and Electrical Force

c)

Charge on object 1, Charge on object 2 and distance

d)

Magnetic Field, Magnetic Force and Electrical Force

29.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
30.
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
31.
What happens if you cut a bar magnet in half?
a)
You get two North pole magnets
b)
You get two South pole magnets
c)
You get a North pole magnet and a South pole magnet
d)
You get two smaller magnets, each with a North and South pole
32.

What causes magnetism?

a)

the sun

b)

moving neutrons

c)

moving charges

d)

friction

33.

Which drawing is correct?

a)

1

b)

2

c)

3

d)

4

34.

What does the direction of the pointing fingers mean in this picture?

a)

the direction of the voltage

b)

the rotation of the wire

c)

the direction of the magnetic field

d)

the direction of the current

35.

What experiences a magnetic force in a magnetic field?

a)

a charge

b)

a moving object

c)

a moving charged object

36.

Is this material a magnet or just magnetic?

a)

just magnetic

b)

a magnet

c)

both

d)

neither

37.

What are the microscopic regions of atoms with a commonly aligned magnetic field called?

a)

micromagnets

b)

amps

c)

magnetic zones

d)

magnetic domains

38.

F = BIL If the current and magnetic field are doubled, the magnetic force on the wire

a)

halves

b)

remains the same

c)

doubles

d)

quadruples

39.

F = qvB If the speed and charge double, what happens to the magnetic force?

a)

halves

b)

remains the same

c)

doubles

d)

quadruples

40.
The unit of magnetic field is
a)
N
b)
Nm^2
c)
Km
d)
N/m
e)
Wb/m^2
41.
Magnetic method cannot be applied to searching for
a)
Fossil
b)
Water
c)
Building construction
d)
Arc
e)
Metal mineral
42.
Object that have strong magnetism are called
a)
Diamagnetic
b)
Paramagnetic
c)
Ferromagnetic
d)
Antiferromagnetic
e)
Non magnetic
43.
Object that have weak magnetism are called
a)
Diamagnetic
b)
Paramagnetic
c)
Ferromagnetic
d)
Antiferromagnetic
e)
Non magnetic
44.
Based of the following which has the highest magnetism is
a)
Steel
b)
Iron
c)
Allumunium
d)
Rubber
e)
Plastic
45.
The value of the magnetic intensity of rocks on the influence of magnets is called
a)
Density
b)
Magnetic
c)
Suscepbility
d)
Conductivity
e)
Polarity
46.
The effect of curie temperature on magnetic strength is
a)
Fixed strong magnetic
b)
Decrease magnetic strength
c)
Increase magnetic strength
d)
The direction of the magnetic field is fixed
e)
No magnetic
47.
The material in which all electrons are paired is called
a)
Diamagnetic
b)
Paramagnetic
c)
Ferromagnetic
d)
Antiferromagnetic
e)
Non magnetic
48.
The unit of magnetic moment is
a)
Am^2
b)
Am
c)
Wb/m^2
d)
N/m
e)
N/m^2
49.
How was susceptibility of dimagnetic substances
a)
Strong
b)
Positive
c)
Negative
d)
Weak
e)
Contaminated
50.
The unit of "the induced intensity of magnetization" is
a)
A
b)
Am^-1
c)
Km
d)
N/m
e)
m^2

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