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Electromagnetism

Total questions: 30

Worksheet time: 27mins

Name
Class
Date
1.
As electrons move, they make
a)
A. electromagnetism.
b)
B. auroras.
c)
C. ferromagnetism.
d)
D. magnetic fields.
2.
The process of creating a current in a circuit by changing a magnetic field
a)
A. electric generator
b)
B. electric motor
c)
C. electromagnetic induction
d)
D. magnet
3.
What is created when a magnet moves through a coil of wire?
a)
A. an electromagnet
b)
B. a ferromagnet
c)
C. a solenoid
d)
D. an electric current
4.
Which of the following are two effects of Earth’s magnetic field?
a)
A. compass points to geographic north, auroras seen at both poles  
b)
B. compass points to magnetic north, auroras seen at both poles
c)
C. compass points to geographic south, auroras seen at the equator
d)
D. compass points to geographic north, auroras seen at the equator
5.
What kind of magnet can be turned on and off?
a)
refrigerator magnet
b)
electromagnet
c)
magnetite
d)
iron
6.
If you wrap more coils around an electromagnet, it will become 
a)
brighter
b)
stronger
c)
weaker
d)
invisible
7.
What is the flow of electricity?
a)
electric motor
b)
Electric current
c)
Electric eel
d)
electric circuit
8.
A compass needle responds to a magnetic field, because the compass needle is a
a)
A. generator.
b)
B. motor.   
c)
C. magnet.
d)
D. transformer.
9.

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

a)

attract, repel

b)

repel, repel

c)

attract, attract

d)

repel, attract

10.

The picture above is an example of what?

a)

Magnetic field

b)

Electric field

c)

Repulsion

d)

Attraction

11.

What would happen with the magnets in the picture above?

a)

They would repel

b)

Nothing

c)

They would attract

d)

They would repel and then attract

12.
The ability of some materials to attract certain metals is called
a)
Electricity
b)
Magnetism
c)
Electromagnetism
d)
Atoms
13.

If the north pole of a magnet is brought close to the south pole of another magnet, what will happen?

a)

They will atrract each other

b)

They will repel each other

c)

They will demagnitize

d)

The south pole will turn around so the north pole is facing the other magnet.

14.

Which sides of the magnet repel each other?

a)

A) North and North Pole

b)

B) South and South Pole

c)

C) The North and South Pole

d)

D) A and B

e)

E) A, B,C

15.

Which answer describes a magnet best.

a)

A material that has two north poles

b)

A material that has a two south poles

c)

A material that has a north and a south pole

d)

An electron

16.

A magnet will pick up an object that is made of...

a)

plastic

b)

iron or steel

c)

glass

d)

copper

17.

The strongest parts of the magnet are ...

a)

fronts

b)

backs

c)

poles

d)

middle

18.

The area around a magnet is called the .....

a)

attraction zone

b)

work area

c)

magnetic field

d)

hot zone

19.
True or False: All metals stick to magnets.
a)
True
b)
False
20.

Why does the compass needle move at different locations?

a)

Because the needle is attracted to the magnetic field produced by the magnet

b)

Because north is up

c)

Because it is being attracted to the Magnetic North Pole

d)

Because north is down

21.

These magnetic domains are:

a)

strongly magnetized

b)

slightly magnetized

c)

unmagnetized

22.
Are the magnetic field lines in the picture correct?
a)
Yes, because they point from north to south.
b)
No, because they point from north to south (they're supposed to go the other way).
c)
Yes, because the North pole is on the left in all pictures.
d)
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
23.

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

24.
Magnetism is a type of ____________
a)
force
b)
book
c)
plant
d)
animal
25.
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
26.
The further two magnets are apart, the __________________ the force of magnetism.
a)
stronger
b)
weaker
c)
same
27.
True or False: A magnetic field is invisible.
a)
True
b)
False
28.

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

a)

Granite

b)

Limestone

c)

Iron

d)

Nickel

29.

A device that uses a free-moving magnetic needle to show direction is a:

a)

Lodestone

b)

Magnet

c)

Compass

d)

Magnetic field

30.

This large crane magnet functions only when the electrical current is ON. The crane magnet is an example of what type of magnet?

a)

NIB Magnet

b)

Ceramic Magnet

c)

Electromagnet

d)

Disc magnet