Exploring Simple Circuits - Grade 4
Question 1
What is needed to complete an electrical circuit?
Only a power source and conductors
A power source, conductors, and a load
A power source, insulators, and a load
Only a power source and a load
Question 2
What happens when you open a switch in a simple circuit?
The circuit is broken and the current stops flowing
The current flows faster
The circuit becomes a parallel circuit
Nothing happens
Question 3
Which of these materials is a good conductor of electricity?
Rubber
Plastic
Copper
Glass
Question 4
What is the purpose of a load in an electrical circuit?
To generate electrical energy
To open the circuit
To prevent the current from flowing
To use the electrical energy to do work
Question 5
What does a battery do in a circuit?
Slows down the flow of electrons
Stops the flow of electrons
Provides energy to push electrons through the circuit
Converts electrical energy into light
Question 6
Which of the following is NOT a part of a simple circuit?
Light bulb
Wire
Transformer
Switch
Question 7
What is the role of a switch in a simple circuit?
To increase the voltage
To control the flow of electricity
To decrease the resistance
To store electrical energy
Question 8
If a light bulb is used as a load in a circuit, what happens when the circuit is closed?
The light bulb changes color
The light bulb explodes
The light bulb turns on
The light bulb turns off
Question 9
In a simple series circuit with one battery and two light bulbs, what happens if one bulb burns out?
The other bulb will shine brighter
Both bulbs will go out
The battery will recharge itself
The other bulb will remain lit, unaffected
Question 10
Which of these is an example of an insulator?
Iron
Steel
Wood
Aluminum
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