Topic: Conductor and Insulator
Objective:

To demonstrate how to complete a simple circuit.

To test whether materials are conductors or insulators.
Materials:

Crocodile wires

Switch

Bulb

Buzzer

Battery

Various materials to test (e.g., metal spoon, plastic ruler, plastic spoon, rubber band,
paperclip, pencil, eraser)
Procedure:
1. Building a Simple Circuit (Bulb or Buzzer)
1. Connect the positive terminal of the battery to one terminal of the bulb using a crocodile
wire.
2. Connect the other terminal of the bulb to the negative terminal of the battery with another
crocodile wire.
3. Observe if the bulb lights up.
4. Add a switch in the circuit and test if it turns the bulb on and off.
2. Testing Conductors and Insulators
1. Break the circuit by removing one of the crocodile wires.
2. Insert a test material between the open ends of the crocodile wires.
3. Observe if the bulb lights up or if the buzzer makes a sound.
o
If it works, the material is a conductor.
o
If it does not work, the material is an insulator.
4. Repeat for different materials.
Results
Material
Bulb Lights Up
(✔/✘)
Buzzer Rings
(✔/✘)
Conclusion
(Conductor/Insulator)
Metal spoon
Plastic ruler
Plastic spoon
Rubber
band
Paperclip
Pencil
Eraser
Discussion Questions:

What materials allow electricity to flow through them?

Why do some materials stop the circuit from working?

Why are wires made of metal and covered in plastic?