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Electricity & Magnetism

Total questions: 44

Worksheet time: 7hrs 20mins

Name
Class
Date
1.
 What causes two balloons to attract to each other?
a)
Two of the same charges
b)
Two positive charges
c)
One negative charge and one positive charge
2.
Which is a conductor?
a)
Glass
b)
Penny
c)
Rubber
3.
Which is an insulator?
a)
Penny
b)

Rubber

c)

Nail

4.
What can an electromagnet do that a permanent magnet cannot do?
a)
It is stronger than any permanent magnet.
b)
It can be turned on and off
c)
They can glow in the dark
5.
What happens when current flows where it isn’t supposed to?
a)
A short circuit will occur
b)
A fire will occur
c)
A bad connection will occur
6.
An object that does not conduct electricity.
a)
Insulator
b)
Conductor
c)
Electromagnet
7.
A circuit that has two or more paths that electricity can follow.
a)
Series Circuit
b)
Electromagnet
c)
Parallel Circuit
8.
The buildup of charges on an object.
a)
Electromagnet
b)
Static electricity
c)
Resistance
9.
A circuit that has only one path in which electricity can follow is a
a)
insulator
b)
conductor
c)
parallel circuit
d)
series circuit
10.
The space in which an electric force act is an
a)
insulator
b)
resistance
c)
electric field
d)
static electricity
11.
A temporary magnet made up of a wire wrapped around a core is an
a)
insulator
b)
electromagnet
c)
copper
d)
nail
12.
The measure of how much a material opposes the flow of current is called
a)
conductor
b)
insulator
c)
electric field
d)
resistance
13.
An object that allows electricity to flow through it is a
a)
resistance
b)
insulator
c)
conductor
d)
cotton
14.
What is a property of matter that causes objects to attract or repel each other?
a)
compass
b)
electric charge
c)
electric circuit
d)
electric field
15.
Which is a characteristic of most electrical conductors?
a)
They can be cut easily.
b)
Positive charges move easily through them.
c)
Negative charges move easily through them.
d)
They are soft and flexible.
16.
Which statement is TRUE about an electromagnet?
a)
It is a permanent magnet.
b)
Increasing the number of coils decreases the strength.
c)
It cannot be turned off.
d)
It is made by wrapping current-carrying wire around an iron core.
17.
Which of these materials makes a good insulator of electricity?
a)
plastics
b)
salt water
c)
aluminum foil
d)
silver
18.
If one burned-out bulb causes all of the lights to fail in a circuit, what might you conclude?
a)
It is a parallel circuit.
b)
More batteries are needed.
c)
It is a series circuit.
d)
A heavier wire is needed.
19.
A student added another light to an electric circuit and all the lights became dimmer.  What is most likely the cause of the dimmer lights?
a)
The batteries are weak.
b)
The light bulbs are hot.
c)
The circuit is a series circuit.
d)
The circuit is a parallel circuit.
20.
What is the best type of circuit to use when putting lights on a Christmas tree?
a)
Parallel Circuit
b)
Static Electricity
c)
Series Circuit
d)
Battery Circuit
21.

Two wires carrying electricity can create a spark if they come too close together. This spark can start a fire. Wires carrying electricity are usually covered with plastic to keep them from starting a fire. Why does the plastic keep the electricity from starting a fire?

a)

Plastic is a good insulator.

b)

Plastic can melt when heated.

c)

Plastic is softer than wire.

d)

Plastic conducts electricity.

22.
A material in which electrons are not able to move easily 
a)
Circuit 
b)
Insulator 
c)
Resistance 
d)
Conductor
23.
If you replace the paper clip with a plastic spoon, what happens?
a)
The bulb doesn't light
b)
The bulb is dimmer
c)
The wires get hot
d)
There is no change
24.
All of the following are conductors except _______.
a)
metal spoon
b)
wire
c)
iron nail
d)
plastic spoon
25.
Which of these best completes the circuit?
a)
rubber band
b)
metal nail
c)
leather shoelace
d)
wooden toothpick
26.
What object would best complete this circuit?
a)
A battery
b)
a peice of yarn
c)
an insulator
d)
a conductor
27.
Which of the following is NOT a conductor?
a)
Water
b)
Aluminum
c)
Wood
d)
Penny
28.
You know that the object connected to the wires is a conductor because:
a)
The light bulb is glowing bright.
b)
It's a complete circuit.
c)
It's a closed circuit.
d)
The object is shiny.
29.
If you replace the paper clip with a plastic spoon, what is the plastic spoon acting as?
a)
A conductor
b)
A diode
c)
An insulator
d)
A switch
30.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
31.

A temporary magnet that only works when electricity is passed through wires surrounding an iron core is called:

a)

electromagnet

b)

galvanometer

c)

induction

d)

super conductor magnet

32.

How could you make a stronger electromagnet?

a)

more coils of wire

b)

add an iron core

c)

more current in the wire

d)

all three

33.
A temporary magnet made up of a wire wrapped around a core
a)
conductor
b)
electromagnet
c)
parallel circuit
d)
series circuit 
34.
Which statement is true about an electromagnet?
a)
It is a permanent magnet.
b)
It is made by wrapping current-carrying wire around an iron core.
c)
It cannot be turned off.
d)
Increasing the number of coils decreases the strength.
35.

What is magnetism?

a)

the distance between two magnets

b)

the force

c)

the force where objects are attracted to or repelled from one another

d)

the study of magnets

36.

To push or pull is called...

a)

a force

b)

iron

c)

induced magnetism

d)

temporary magnet

37.

To push or pull is called...

a)

a force

b)

iron

c)

induced magnetism

d)

temporary magnet

38.

What objects can help us detect a magnetic field?

a)

wood

b)

yarn

c)

plastic

d)

iron

39.

When two magnets pull toward one another, we say they

a)

attract

b)

repel

c)

force

d)

magnetize

40.

When two magnets pull away from each other, we say they

a)

attract

b)

repel

c)

force

d)

magnetize

41.

Every magnet has two poles.

a)

True

b)

False

42.

When you hold two magnets, you can feel the magnets pulling toward each other or pushing away from each other.

a)

True

b)

False

43.

When two south pole magnets are brought near each other they repel.

a)

True

b)

False

44.

When a north and a south pole come together they attract.

a)

True

b)

False

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