1. Electric Current Electric current is an electric charge in motion.
Materials that allow electrons to flow easily through them are called conductors of electricity.
Ex. Copper, silver, iron, etc.

2. Electric Current
Materials that resist the flow of electrons are nonconductors which are called insulators.
Ex. Wood, glass, rubber, plastic, etc.
These help prevent electrical shock to someone who touches a wire that is carrying an electric current.

3. Closed/Open Circuits
Electricity must have a complete path from the power source, through the circuit, and back to the source, this is called a closed circuit.

4. Closed/Open Circuits
If the path of electric current is broken, the circuit is incomplete and is called an open circuit.

6. Series/Parallel Circuits
Lights are connected in a way that the electric current must pass through one bulb before it can get to the next, this is called a series circuit.

7. Series/Parallel Circuits
Parallel circuits are wired in such a way that each bulb receives the current independent of the other bulbs.