Circuit Basics
What is a circuit?
A path that allows electricity to flow.
Which part supplies energy to a circuit?
The battery.
Name one object that uses a circuit.
Flashlight, TV, computer, fan, phone charger, etc.
Should you touch exposed electrical wires?
No.Reason: Exposed wires can carry electricity. Touching them can cause an electric shock or serious injury.
Why do engineers build prototypes?
To test ideas before making the final product.
What is needed for electricity to flow through a circuit?
A complete (closed) circuit.
Which part carries electricity from one place to another?
Wires.
Why are circuits important?
They allow electrical devices to work.
Is it safe to use electrical devices with wet hands?
No. Reason: Water helps electricity travel. Wet hands increase the risk of getting an electric shock.
What problem does a flashlight solve?
It helps people see in the dark.
What happens when a circuit is open or broken?
Electricity cannot flow, so the device will not work.
Which part turns the circuit on and off?
A switch.
Name three things in this classroom that use electricity.
Lights, computer, projector, Smart Board, clock, etc
What should you do if you find a damaged electrical cord?
Tell an adult or teacher.
If a flashlight won't turn on, what are two things you should check?
The battery, bulb, switch, or wire connections.
True or False: Electricity can travel through a broken circuit.
False.
What is the job of a light bulb or LED in a circuit?
It uses electricity to produce light.
Question: Which of these uses a circuit?
Flashlight.
True or False: It is safe to stick metal objects into an electrical outlet.
False.Reason: Metal conducts electricity. Putting metal into an outlet can cause a severe electric shock, burns, or even start a fire.
Imagine you are designing a night light. What circuit parts would you need?
A battery (or power source), wires, a switch, and a light bulb or LED.
What is the difference between an open circuit and a closed circuit?
A closed circuit lets electricity flow. An open circuit does not.
Name the four basic parts of a simple circuit.
Battery, wires, switch, and light bulb (or LED).
Why do traffic lights need circuits?
Circuits allow electricity to power and control the lights.
Name two ways to stay safe around electricity.
Examples include:
Explain why electricity is important in our everyday lives.
Electricity powers devices we use every day, such as lights, computers, phones, refrigerators, and medical equipment.