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MK.U2.L4 Electromagnetism

Total questions: 48

Worksheet time: 2hrs 36mins

Name
Class
Date
1.
As electrons move, they make
a)
A. electromagnetism.
b)
B. auroras.
c)
C. ferromagnetism.
d)
D. magnetic fields.
2.
The attraction or repulsion created by spinning electric charges
a)
A. electric generator
b)
B. magnetic force
c)
C. solenoid
d)
D. electromagnet
3.
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
4.
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
5.
Which of the following are two kinds of magnets?
a)
A. atoms, domains
b)
B. magnetic fields, magnetic poles
c)
C. ferromagnets, electromagnets
d)
D. magnesia magnets, magnetite magnets
6.
What kind of magnet can be turned on and off?
a)
refrigerator magnet
b)
electromagnet
c)
magnetite
d)
iron
7.
If you wrap more coils around an electromagnet, it will become 
a)
brighter
b)
stronger
c)
weaker
d)
invisible
8.
What is the flow of electricity?
a)
electric motor
b)
Electric current
c)
Electric eel
d)
electric circuit
9.

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

10.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
11.

These magnetic domains are:

a)

strongly magnetized

b)

slightly magnetized

c)

unmagnetized

12.

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

13.
What is true about electricity and magnetic fields?
a)
Electricity is needed to create any magnet.
b)
Electricity always creates a magnetic field.
c)
Electricity is stronger than a magnetic field.
d)
Electricity prevents magnetic fields from occurring.
14.
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.
15.

When running a current through a wire, what do the blue lines represent?

a)

The wire spinning

b)

A magnetic field that was created

c)

Electrons leaving

d)

Electricity

16.

Protons have a ____________ charge.

a)

negative

b)

neutral

c)

positive

17.

Electrons have a ____________ charge.

a)

negative

b)

neutral

c)

positive

18.

A current is produced when _______________ flow in a circuit.

a)

protons

b)

neutrons

c)

electrons

d)

nucleons

19.

Electric current is measured in ____________.

a)

Newtons (N)

b)

Amperes (A)

c)

Hertz (Hz)

20.

How do you increase the strength of an electromagnet?

a)

Add a motor and/or light bulbs

b)

Add more light bulbs and wire coils

c)

Add more wire coils

d)

Increase the voltage

21.

A _______________ is a current-carrying coil of wire with many loops.

a)

magnet

b)

electromagnet

c)

solenoid

d)

compass

22.

A _____________ transforms mechanical energy into electrical energy.

a)

generator

b)

electromagnet

c)

circuit

d)

magnetic field

23.

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

a)

decrease

b)

increase

c)

not affect

24.

What three minerals are attracted to a magnet?

a)

Gold, copper, cobalt

b)

Cobalt, aluminum, silver

c)

Iron, copper, aluminum

d)

Iron, nickel, cobalt

25.
Who discovered electromagnetic induction?
a)
Hans Christian Orsted
b)
Michael Faraday
c)
James Maxwell
d)
Heinrich Hertz
26.
Electromagnetism is when
a)
magnetism causes electricity
b)
electricity causes magnetism
c)
electricity and magnetism cancel each other out
d)
a strong magnet creates a permanent magnet
27.
The voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?
a)
Flip the magnet around so the North pole is facing out
b)
Move the magnet back and forth
c)
Take the magnet out
d)
Add more coils around the paper cylinder
28.

Atoms That have a positive charge will be attracted to atoms with a ______________ charge.

a)

positive

b)

negative

c)

no charge

29.
The tool that used magnetic forces to show  which direction is north is _______.
a)
Pole
b)
Compass
c)
Attract
d)
Repel
30.
The battery is the ________ of energy.
a)
Wire 
b)
Source 
c)
Insulator
d)
Negative
31.
The part of the magnet with the strongest attraction and is labeled N and S is called magnetic __________.
a)
poles 
b)
attractor
c)
repel
d)
compass
32.
Will these two magnets attract or repel?
a)
Attract
b)
Repel
33.

Surrounding each magnetic is an invisible force field called

a)

Gravity

b)

A magnetic field

c)

An electric field

d)

The Force

34.

In an electromagnet, coils of wire are wrapped around a magnetic object to generate a magnetic field. What the is relationship between number of coils and the strength of the magnetic field?

a)

The more coils an electromagntic has, the stronger the magnetic field

b)

The more coils an electromagntic has, the weaker the magnetic field

c)

The larger the metal object, the stronger the magnetic field is

d)

There is no relationship between number of coils and the strength of a magnetic field

35.

What is the cause of electricity?

a)

Magnetism

b)

Gravity

c)

Moving electrons

d)

Lightning

36.

What forces works only by combining electric and magnetic forces?

a)

electric

b)

magnetic

c)

static electricity

d)

electromagnet

37.

This force occurs when ions create attractive and repulsive forces.

a)

Electric Current

b)

Magnetic Force

c)

Electromagnet

d)

Magnetism

38.

This force occurs when there is an attractive and repulsive force between two poles.

a)

Electric

b)

Electromagnetism

c)

Magnetism

d)

Static Electricity

39.

In a magnet the opposite poles will

a)

Attract

b)

Repel

c)

Neither

40.

Like poles will

a)

Attract

b)

Repel

c)

Neither

41.

The magnetic field of a magnet is ____________ further away from the magnet.

a)

Smaller

b)

Stroner

c)

Larger

d)

Weaker

42.

Electric charges that do not move through a current are known as

a)

Electricity

b)

Static Electricity

c)

Magnetism

d)

Electromagnetism

43.

The area around an electric charge that experiences the force exerted by the electric charge.

a)

Electric Field

b)

Magnetic Field

c)

Electric Force

d)

Magnetic Force

44.

An electric field that is + moves __________ to/from the charge.

a)

Inward

b)

Outward

45.

What is this image showing.

a)

Electric Current

b)

An Electromagnet

c)

Magnetic Force

d)

Magnetic Field

46.

How could I increase the strength of my electromagnet?

a)

More Batteries

b)

Smaller paper clips

c)

More loops of copper wire

d)

Larger Nail

47.

When electrons all spin in the direction, they create an invisible force known as_______

a)

Electricity

b)

Magnetism

c)

Static Electricity

d)

Electromagnet

48.

Select all the examples of an electromagnet.

a)

Speaker

b)

Motor

c)

Hard Drive

d)

Junkyard Magnet

e)

Refrigerator Magnet

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