4th Science Electricity, Conductors, and Insulators

A material that allows energy to easily flow through it is

• electricity

• insulator

• conductor

• circuit

A closed path that an electric current can move along is a

• circuit

• conductor

• insulator

• electricity

The flow of charged particles along a path is

• circuit

• conductor

• electricity

• insulator

A material that blocks the flow of energy is

• circuit

• insulator

• conductor

• electricity

All of the objects below are conductors of electricity EXCEPT

• a steel fork

• a copper penny

• an aluminum nail

• a rubber band

Students hooked up a battery and bulb with wires. For the bulb to light, the object the students place in the space between the two wires must be

• a conductor

• made of plastic or wood

• an electrical insulator

• at room temperature

This electric circuit can be completed by

• cutting the wires

• reversing the battery

• unscrewing the light bulb

• closing the circuit

Conductors allow thermal and electrical energy to pass through easily. Insulators prevent the flow of thermal and electrical energy. Which of the following items is a poor conductor and a good insulator?

• gold

• stone

• copper

• wood