WorksheetsElectricity Unit Test Review
Total questions: 17
Worksheet time: 49mins
Name
Class
Date
1.
Which best describes a simple series circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from the switch.
c)
Electricity flows along many pathways.
d)
The flow of electricity comes from the light bulb.
2.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will get brighter.
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
3.
Which of the following is NOT part of an electromagnet?
a)
Wire
b)
Iron
c)
Toothpick
d)
Power source
4.
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.
5.
Why can you get a shock if you touch a metal doorknob after walking across a wool carpet?
a)
You have gained electrons; the doorknob has no electrons.
b)
You have gained neutrons; the doorknob has fewer electrons.
c)
You have lost electrons; the doorknob has many electrons.
d)
You have gained electrons; the doorknob has many electrons.
6.
Why are metals useful for making electrical wire?
a)
Metals do not bend.
b)
Metals hold much heat.
c)
Metals are insulators.
d)
Metals are conductors.
7.
Which of these causes electrically charged objects to attract or repel each other?
a)
An equal number of protons.
b)
An equal number of electrons.
c)
An unequal number of electrons.
d)
An unequal number of molecules.
8.
Which best describes a parallel circuit?
a)
Electricity flows along one pathway.
b)
The flow of electricity comes from more than one source.
c)
Electricity flows along more than one pathway.
d)
The flow of electricity comes from more than 1 load.
9.
Which of the following is shown in the picture?
a)
Electromagnet
b)
Electric generator
c)
Electric motor
d)
Transformer
10.
The picture shows an electrical circuit. This circuit is a series circuit because:
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
11.
Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
a)
The balloons will repel each other.
b)
The balloons will attract each other.
c)
The balloons will become positively (+) charged.
d)
The balloons will pop.
12.
The difference between attract and repel is that to attract is to pull something closer and repel is to push something away.
a)
True
b)
False
13.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
14.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
15.
What is a circuit?
a)
A pathway that electricity flows in. It has a load, wire, and a taco
b)
A pathway that protons flow in. It has a load, wire, and a power source.
c)
A pathway that electricity flows in. It has a load, wire, and a power source.
d)
A pathway that electricity flows in. It has a load and wire.
16.
What is # 3 pointing to in the diagram?
a)
base contact
b)
button contact
c)
support wires
d)
filament
17.
Which is NOT an insulator.
a)
Wool
b)
Plastic
c)
Copper
d)
Glass
100 %
