TEST IS ON FRIDAY!!!!

1. Electricity Study Guide
Mr. Ball’s 4th Grade

2. A ____________ is a measure of the
extra positive or negative particles
that objects have
a. conductor
b. charge
c. filament
d. electric force

3. ______________ is a charge that is
“not moving” and it stays on an
object.
a. electric force
b. electric field
c. Conductor
d. static

4. Only a ____________ charge moves
a. Negative
b. positive
c. Neutral
d. hot

5. An electric ___________ is the push or
pull between objects with different
charges
a. Force
b. Current
c. Field
d. Cell

6. A material through which an electric
charge can move easily is a
___________.
a. Resistor
b. insulator
c. filament
d. conductor

7. Which of these materials is a
conductor?
a. rubber
b. Gold
c. Chalk
d. glass

8. Which material would be the best
insulator for a metal wire?
a. Silver
b. Glass
c. Graphite
d. copper

9. What is one use for an insulator?
a. It slows down the flow of electric current to
produce heat and light.
b. It stores electric energy for later use.
c. It allows electric current to flow through it.
d. It makes electrically charged objects safe to
handle.

10. How are conductors and insulators
different?
a. Electric charge moves easily through insulators. It
does not move through conductors.
b. Electric charge is stronger in an insulator.
c. Electric charge is weak in a conductor but strong in
an insulator.
d. Electric charge moves easily through a conductor.
It does not move through insulators.

11. An electric ___________ is the space
where electric forces occur around an
object
a. force
b. current
c. field
d. cell

12. Which statement best describes
what will happen in a closed
circuit?
a The flow of electric current will stop when the
light goes on.
b Electric current will flow one time through the
circuit.
c Electric current will flow until the circuit is
broken.
d Electric current will not flow in the circuit.

13. Electric current cannot flow in a series
circuit if ______________.
a the circuit contains an insulator
b the circuit contains a resistor
c there is a break in the circuit
d the circuit has only one loop

14. What will happen in a parallel circuit
if one of its loops is broken?
a. electric current will not flow through any of the
loops
b. electric current will still flow through the broken
loop
c. electric current will still flow through the unbroken
loops
d. the energy source will stop providing energy to
move electric charges

15. A washing machine is an example of
transforming ________
a electricity into motion energy
b electricity into light
c motion energy into electric energy
d heat into motion energy

16. Five light bulbs are wired on one
circuit. Three bulbs are lit, two are
not. What type of circuit is this?
a. series circuit
b. open circuit
c. parallel circuit
d. closed circuit

17. A filament is a thin, coiled wire in a lightbulb
that gets so hot it glows and gives off light.
Therefore, a filament is a __________
a insulator
b switch
c battery
d resistor

18. Which of the following uses resistors
to transform electricity into heat?
a. a toaster
b. a fan
c. a gas oven
d. a computer

19. What will happen to this circuit if a rubber
eraser is placed between the battery and
one of the wires connect to it?
a. The eraser will act as an insulator and stop the
electric current.
b. The eraser will act as a conductor and allow the
current to continue.
c. Nothing will happen.
d. The eraser will become the resistor in the
circuit.

20. Why do you get a shock sometimes
when you touch a door handle.
• An electric charge (static) is built up on your
body as you walk on the carpet. When you touch
the door handle the static is discharged to the
knob sometimes giving you a small shock

21. Give three examples of how one type of
energy can be changed (transformed) into a
different type of energy.
• A wind turbine changes wind energy into
electrical energy
• A toaster changes electrical energy into heat
energy
• A solar panel changes solar energy into electrical
energy
• A washing machine changes electrical energy
into motion energy
• Answers will vary. Think of your own