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Magnetism

Total questions: 66

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

A magnet is any material that attracts

a)

iron or materials containing iron

b)

electricity

c)

copper

d)

plastic

2.

Magnets are surrounded by a

a)

force field

b)

magnetic field

c)

corn field

d)

wheat field

3.

One end of a magnet always points

a)

East

b)

West

c)

up

d)

North

4.

If a magnet id broken in half

a)

It creates 2 new magnets with both North and South poles

b)

Its destroys the magnet

c)

It creates new magnets, one with only South poles and one with only North poles

d)

It makes a stronger magnet

5.

Magnetic forces result from electric charges, which is created by

a)

gaining and losing protons

b)

Losing neutrons

c)

Adding protons

d)

gaining or losing electrons

6.

The closer the magnetic field lines

a)

the weaker the field

b)

the stronger the field

7.

The lines of a magnetic field are closet at the poles because

a)

that is where the field is the weakest

b)

that is where the field is strongest

c)

that is where there is no magnetism

d)

that is where there is a neutral charge

8.

In a compass, the needle is a

a)

copper wire

b)

made of wood

c)

magnet

d)

plastic needle

9.

A compass needle

a)

points to true North

b)

aligns with field lines and points in the direction of field lines

c)

is not a magnet

d)

always points East

10.

Atoms group together in___________ . Each one acts like a tiny magnet.

a)

schools

b)

pods

c)

domains

d)

cells

11.

In materials such as copper and aluminum, the magnetic fields cancel each other out because they are

a)

lined up

b)

magnetic

c)

randomly oriented and the domains are not lined up

d)

perfectly oriented with lined up domains

12.

A magnet that quickly loses its magnetism after being removed from a magnetic field is a

a)

permanent magnet

b)

temporary magnet

c)

domain

d)

pole

13.

You can make some magnets permanent by

a)

Putting them in a very strong magnetic field

b)

dropping them

c)

heating them

d)

shaking them

14.

Ways to demagnetize a magnet are

a)

Dropping

b)

heating

c)

putting it in an opposite magnetic field

d)

All of the answers are correct

15.

These materials make good magnets

a)

Aluminum and copper

b)

cobalt and nickel

c)

wood and paper

d)

golf and silver

16.

You can create a magnet by

a)

lining the domains up in an iron nail by dragging a magnet across it

b)

Heating silver

c)

Hitting a nail multiple times

d)

Spinning aluminum in a drum

17.

The Earth's magnetic field protects us from

a)

aliens

b)

solar winds

c)

tornados

d)

lightning

18.

How many North Poles are there?

a)

One

b)

Two. Magnetic North and True (Geographical) North

c)

Three. Magnetic, True, and Geographical.

d)

none

19.

The Magnetic South pole is

a)

has stronger magnetism than the North Pole

b)

Is equal in magnetism to the North Pole

c)

very weak and hard to identify even if you are near it

d)

not magnetic at all

20.

Declination is

a)

how strong a magnetic field is

b)

demonstrates that magnetic North and True North are the same thing

c)

The difference in direction between true north and magnetic north

d)

The direction to the South pole

21.

When a solar storm comes toward us, some of the energy and small particles can travel down the magnetic field lines at the north and south poles into Earth's atmosphere. This causes

a)

an Aurora

b)

a solar flare

c)

rainbow

d)

lightning

22.

Draw a magnetic field on the bar magnet

23.

Circle the image that shows a magnet

24.

Draw arrows in the domains to show the object is magnetic

25.

Draw arrows in the domains to show the object is NOT magnetic

26.

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

a)

attraction or repulsion, magnetic

b)

external or internal, magnetic

c)

external or repulsion, electronic

d)

attraction or internal, electronic

27.

Magnetism is a force of ____________________________ that occurs between two _____________ objects.

a)

attraction or repulsion, magnetic

b)

external or internal, magnetic

c)

external or repulsion, electronic

d)

attraction or internal, electronic

28.

A magnetic field is a field of force that is produced by moving ________ charges.

a)

northern

b)

positive

c)

gravitational

d)

electric

29.

The magnetic ____________ around a bar magnet is shown above.

a)

legs

b)

flowers

c)

field

d)

direction

30.

The Earth produces its own ________ field.

a)

spectrum

b)

electric

c)

magnetic

d)

progressive

31.

A compass points toward the south pole of Earth's magnetic field, located near the Earth's geographical ________.

a)

north

b)

south

c)

east

d)

west

32.

In magnetic materials, all of the ________ are pointing in the same direction.

a)

doors

b)

electrons

c)

domains

d)

orbits

33.

A permanent magnet is a material that produces a ___________________ field without any ___________________ magnetic field being present.

a)

electronic, internal

b)

magnetic, internal

c)

magnetic, external

d)

electronic, external

34.

Permanent magnets can be demagnetized by ___________________ them past the Curie point (approximately 1,060 °F).  

a)

heating

b)

freezing

c)

shaking

d)

solidifying

35.

Every magnet has both a _________ pole and a __________ pole.

a)

North, South

b)

East, West

c)

Positive, Negative

d)

Positive, South

36.

Certain materials respond to magnetic fields by becoming ______________ themselves. ____________ is one of these materials.

a)

magnetic, Plastic

b)

electronic, Iron

c)

magnetic, Iron

d)

electronic, Plastic

37.

Some objects that normally aren't magnetic can become magnetized when connected to a circuit. Items that are magnetized in this way are called ________.

a)

electromagnets

b)

electrons

c)

electrochromic devices

d)

permanent magnets

38.

Probably the most useful thing about electromagnets is that they can be turned ________ and ________.

a)

on, off

b)

positive, negative

c)

north, south

d)

on, negative

39.

If two magnets are close together, the magnetic force will be ________.

a)

smelly

b)

weak

c)

strong

d)

positive

40.

If two magnets are placed so that a north pole and a south pole are facing each other, they will _____________ each other.

a)

date

b)

spin

c)

repel

d)

attract

41.

If two magnets are placed so that two ____________ poles or two ____________ poles are facing each other, they will repel each other.

a)

North, South

b)

external, internal

c)

positive, negative

d)

North, West

42.

Although magnetic fields are _____________, one common way that people investigate them is to use ________ filings.

a)

invisible, iron

b)

touchable, iron

c)

invisible, plastic

d)

touchable, plastic

43.

By sprinkling iron filings in a magnetic field on a flat surface, it is possible to see the __________ of a magnetic field.

a)

shape

b)

distance

c)

mass

d)

temperature

44.

The image above shows how iron filings respond to magnetic fields generated by two magnets with ____________ poles facing each other.

a)

opposite

b)

like

c)

positive

d)

negative

45.

The image above shows how iron filings respond to magnetic fields generated by two magnets with ____________ poles facing each other.

a)

like

b)

opposite

c)

positive

d)

negative

46.

A horseshoe magnet will generate a magnetic field similar in shape to that of two ________ poles brought near each other.

a)

like

b)

opposite

c)

positive

d)

negative

47.
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
48.
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
49.
As the distance between two magnets increases (they get farther apart), the force between them:
a)
Increases
b)
Decreases
c)
Stays the Same
50.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles. 
d)
the middle.
51.

What makes an electromagnet stronger?

a)

greater number of loops

b)

smaller number of loops

c)

decreasing the current

d)

decreasing the voltage

52.
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.
53.
Which of these is attracted to a magnet?
a)
iron nail
b)
copper penny
c)
piece of paper
d)
notebook
54.
Magnets have a north and a south ___________
a)
shape
b)
color
c)
pole
d)
region
55.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
56.
A device that uses a free-moving magnetic needle to show direction is a:
a)
lodestone
b)
magnet
c)
compass
d)
magnetic field
57.

Once a paperclip touches a magnet and becomes a magnet itself, does a paperclip STAY that way? Or does it stop being a magnet?

a)

stay that way forever

b)

stop being a magnet

c)

stay that way for a short time

58.

When iron touches a magnet, it becomes a magnet too.

a)

True

b)

False

59.

Magnets can pull on things without touching them.

a)

True

b)

False

60.

A type of magnet that has temporary magnetic effect when electric current flows through it.


This refer to

a)

Electric

b)

Electronic

c)

Electrostatic

d)

Electromagnet

61.
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.
62.
True or False: All metals stick to magnets.
a)
True
b)
False
63.
The lines on this image are called...
a)
magnetic field lines
b)
iron fillings
c)
graphite lines
d)
none of these
64.
Electricity can be used to create a magnet
a)
True
b)
False
65.
A Magnet can be used to create electricity
a)
True
b)
False
66.
You can make an electromagnet stronger by...
a)
increasing the current through the wire
b)
make the iron core bigger
c)
increase the number of loops around the core
d)
All of these

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