A student tests different objects like a copper wire, wooden stick, and plastic pen in a simple circuit.
Choose the correct word to complete each statement.
1. The bulb will glow when the student uses a in the circuit.
2. The copper wire is a because it an electric current to pass through it.
3. The wooden stick is an because it an electric current to pass through it.
4. The plastic pen is an because it an electric current to pass through it.
5. Materials that allow electric current to pass through them are called , while materials that do not allow current are called .