Science-Texas Coach-C2L8-Conductors and Insulators

Look at the diagram below. Which object could replace the switch and still allow the bulb to light up?

• a rubber band

• a strip of cloth

• a steel paperclip

• a wooden toothpick

Which one will let heat pass through MOST easily?

• a glass cup

• a plastic shovel

• a rubber glove

• an aluminum can

Which of these materials is an insulator?

• glass

• aluminum

• copper

• steel

A student is planning an experiment to test whether a cotton sock and a cold coin are conductors or insulators. The student will attack each object to a circuit that includes a battery, a bulb, and wire. Which of the following should the student do?

• use copper wire for the circuit with the sock and brass wire for the circuit with the coin

• use exactly the same battery, bulb, and wire for the circuit with the sock and the circuit with the coin

• include a second bulb for the circuit with the sock but not for the circuit with the coin

• include a second bulb for the circuit with the coin but not for the circuit with the sock