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Electricity - 3.5.2021

Total questions: 58

Worksheet time: 58mins

Name
Class
Date
1.

In a series circuit, what will happen if the path for the electrical current is broken by a burned out bulb?

a)

The electrical current will stop fllowing and none of the bulbs will light up.

b)

The electrical current will continue flowing and the other bulbs will light up.

c)

The energy source will continue to move the electric charge through the circuit.

2.

Which of the folowing uses resistors to transform electricity into sound?

a)

a teacher blowing a whistle

b)

drums

c)

an electric piano

d)

a flute

3.

Which of the following can transform electrical energy into heat?

a)

a hair dryer

b)

a warm sweater

c)

a barbeque grill

d)

the sun

4.

Which of the following is a good conductor?

a)

copper

b)

rubber

c)

dry wood

d)

glass

5.
Which material is the best conductor of heat? 
a)
aluminum 
b)
glass
c)
wood
d)
plastic
6.
Why is an insulator used in a circuit? 
a)
An insulator helps keep the electric charges inside the pathway.  
b)
 An insulator transforms electrical energy into other forms of energy.      
c)
   An insulator provides the pathway electric current moves through.
d)
 An insulator provides the energy to pump electric charges through the circuit. 
 
7.
Using the picture above, which letter correctly labels the battery?
a)
A
b)
B
c)
C
d)
D
8.
Using the picture above, which letter correctly labels the switch?
a)
A
b)
B
c)
C
d)
D
9.
Using the picture above, which letter correctly labels the light bulb?
a)
A
b)
B
c)
C
d)
D
10.
Using the picture above, which letter correctly labels the wire?
a)
A
b)
B
c)
C
d)
D
11.
Which of the following provides stored energy to run the circuit?
a)
Battery
b)
Light Bulb
c)
Switch
d)
Wire
12.
Which of the following controls the flow of electricity by opening and closing the circuit?
a)
Battery
b)
Light Bulb
c)
Switch
d)
Wire
13.
Which of the following produces light when part of a complete circuit?
a)
Battery
b)
Light Bulb
c)
Switch
d)
Wire
14.
Which kinds of materials make good conductors?
a)
Fabric
b)
Metal
c)
Plastic
d)
Wooden
15.
Electric energy can be transformed into
a)
light, mechanical, sound, and heat
b)
taste, sound, stored, and heat
c)
stored, mechanical, taste, and light
d)
sound, mechanical, taste, and heat
16.
Which of the following is an insulator?
a)
aluminum foil
b)
copper penny
c)
piece of string
d)
wooden craft sticks
17.

How can it be explained that someone's hair can stick to a balloon?

a)

There is static electricity.

b)

There is too much dust in the air.

c)

The person needs to wash his hair.

18.

Opposite charges _______________.

a)

attract

b)

repel

c)

nothing changes

19.

The flow of electric charge in a circuit is called _______.

a)

Heat

b)

Sound

c)

Electric Current

d)

Magnetic

20.

Identify the part of the circuit that is labeled 1.

a)

battery

b)

wire

c)

switch

d)

bulb

21.

Identify the part of a circuit that is labeled 2.

a)

battery

b)

wire

c)

switch

d)

bulb

22.

Identify the part of a circuit that is labeled 3.

a)

battery

b)

wire

c)

switch

d)

bulb

23.

What supplies the energy or power in an electric circuit?

a)

light bulb

b)

wire

c)

battery

24.

If the light is on, the circuit is _________________.

a)

closed

b)

open

25.

If the light is off, the circuit is ______________.

a)

closed

b)

open

26.
A/an _________________ is an object that will allow electricity to flow through it.
a)
insulator
b)
conductor
27.
A/an _________________ is a material that will not allow electricity to flow through it.
a)
insulator
b)
conductor
28.
Identify the insulator below.
a)
aluminum foil
b)
paperclip
c)
rubber eraser
29.

Identify the conductor below.

a)

cloth

b)

plastic

c)

metal

30.

What would best complete this circuit?

a)

A wire

b)

A switch

c)

A battery

d)

A light bulb

31.

What object would best complete this circuit?

a)

A battery

b)

a conductor

c)

an insulator

32.

How could you make this circuit work?

a)

Close the switch

b)

Take out the bulbs

c)

Add another battery

d)

Add another bulb

33.
The circuit  lights the light bulb. What is the purpose of the switch in the circuit?
a)
to push the electric current
b)
to open and close the circuit
c)
to insulate the circuit
d)
to make the electricity
34.
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.
35.

Mahra finds that all of the electric cords in her school are covered with plastic. Why is it important to cover the electric cords with plastic?

a)

Plastic is an insulator.

b)

Plastic is a conductor.

c)

Plastic is strong.

d)

Plastic will melt.

36.
____________ allows electricity to flow.
a)
A conductor
b)
An insulator
c)
A magnet
37.
____________ stops the flow of electricity.
a)
A conductor
b)
An insulator
c)
A magnet
38.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
39.
When the switch is closed, the light
a)
comes on
b)
stays off
c)
burns out
40.
The plastic around the wire is
a)
conductor
b)
insulator
c)
decoration
41.
If the lights are on, the circuit is
a)
closed
b)
open
42.

The flow of electricity requires a

a)

complete circuit

b)

incomplete circuit

c)

insulated current

43.

True / False -- You can put anything such as a fork into electric sockets.

a)

True

b)

False

44.

Always ________________ electrical appliances when not using them.

a)

turn off

b)

turn on

c)

destroy

d)

replace

45.
Will this circuit light the bulb? 
a)
Yes
b)
No
46.
Will this circuit light the bulb? 
a)
Yes
b)
No
47.
Will the light bulb light up if the switch remains open as shown?
a)
Yes, because the circuit will be complete.
b)
Yes, because the battery will push the electric current.
c)
No, because the electric circuit is not complete.
d)
No, because the battery will push the electric current.
48.
The circuit  lights the light bulb. What is the purpose of the switch in the circuit?
a)
to push the electric current
b)
to open and close the circuit
c)
to insulate the circuit
d)
to make the electricity
49.
The circuit below lit the light bulb. What is the best claim we can make from this evidence?
a)
The metal key is an insulator.
b)
The metal key is a conductor.
c)
The wires are not conductors.
d)
The circuit is not complete.
50.

Tasha tested several items to see if they could conduct electricity. Her data is shown below. What is the best claim she could make from her data?

a)

Wood is an insulator.

b)

Metal is an insulator.

c)

Keys are insulators.

d)

Toothpicks are conductors.

51.

Which of these is the best example of electric energy being transformed into heat energy?

a)

lamp

b)

fan

c)

telephone

d)

toaster

52.

Which is the best example of electric energy being transformed into sound energy?

a)

toaster

b)

electric blanket

c)

television

d)

lamp

53.

Electricity is a form of energy that can be changed into other forms of energy, including __________, __________, __________, __________

a)

light, heat, sound, motion

b)

cooling, running, freezing, motion

c)

heat, air, tires, fans

54.

The flow of electricity is an _____________________.

a)

battery

b)

resistor

c)

electric current

55.

______________ are materials that electrical current cannot pass through.

a)

resistors

b)

circuits

c)

conductors

d)

insulators

56.

A complete pathway for the flow of electricity is called a ________________.

a)

circuit

b)

series

c)

parallel

d)

current

57.

A ______________ is sometimes added to a circuit, it opens and closes a circuit to turn resistors on and off.

a)

battery

b)

resistor

c)

current

d)

switch

58.

When a circuit is ____________ it is incomplete and charges can't flow through.

a)

open

b)

closed

c)

series

d)

parallel

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