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WorksheetsElectricity year 4.
Total questions: 22
Worksheet time: 19mins
Why do electricians always wrap wires in plastic?
Plastic comes in many different colors
Plastic is a good electrical conductor
Plastic makes the wires easy to bend
Plastic is a good electrical insulator
Which of these materials is an electrical insulator?
Copper
Steel
Glass
Aluminium
What is electricity?
A type of science
A type of food
A type of energy
A type of light
This object opens and closes the circuit
Wire
Switch
Battery
Resistor
These conduct electricity.
Battery
Wires
Resistor
Switch
When a switch is ..........., it completes the circuit and allows electricity to flow.
opened
closed
partially closed
partially opened
What does the light bulb produce?
Produced light for a long period of time.
A machine that recorded sound.
This was the first motion picture camera.
When we talk about electricity, we can distinguish two types of materials:
Hard and soft.
Conductors and insulators.
Rigid and flexible.
Insulating materials are....
Copper
Plastic
Iron
Wood
What is this?
Battery
Bulb
Wire
Motor
Switch
Circuit "A" is broken, because:
the switch is open
the switch is closed
the switch is black
the switch is not there
Identify the part of the circuit that is labeled 1.
battery
wire
switch
bulb
Identify the part of a circuit that is labeled 3.
battery
wire
switch
bulb
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulate electricity
Water is a______?
conductor
insulator
