1. Materials that do not allow heat or electricity to flow easily.

2. When the electricity can't flow through.

3. _______________________ are good conductors of electricity.

4. An electrical circuit that can be traced in a continuous path from the source of the electrical energy, around the circuit, and back to the energy source.

5. A ______________________ allows you to control whether the circuit is open or closed.

6. The circuit has _____________________ bulbs.

7. Which instrument is shown in the picture?

8. What is the function of a dry cell?

9. What is this?

10. An electrical component that we use in electronics circuits to limit current though an active component or to reduce voltage in the circuit.