USA #4 Review

Front

What is an insulator?

Back

A material in which electrons are NOT able to move easily.

Front

What is a conductor?

Back

Objects that allow thermal and electrical energy to pass through easily.

Front

What is a closed circuit?

Back

A complete, connected circuit that allows electricity to flow.

Front

What is an open circuit?

Back

A circuit that is not complete, preventing electricity from flowing.

Front

What is the purpose of a battery in a circuit?

Back

A battery provides the electrical energy needed to power the circuit.

Front

What is the role of a switch in a circuit?

Back

A switch controls the flow of electricity by opening or closing the circuit.

Front

What is resistance in electrical terms?

Back

Resistance is a measure of how much a material opposes the flow of electric current.

Front

What materials are typically good conductors?

Back

Metals like copper and aluminum are good conductors of electricity.

Front

What materials are typically good insulators?

Back

Rubber, glass, and plastic are good insulators that prevent the flow of electricity.

Front

How does a circuit work?

Back

A circuit works by providing a path for electric current to flow from a power source to a device and back.