Conductors of Heat and Electricity

How can we identify if a material is a good conductor of heat and electricity?

• If heat and electricity cannot pass through easily.

• If heat and electricity can pass through easily.

• If a material is made up of wood.

• If a material is made up of plastic.

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Which of these materials DO NOT allow electricity to pass through?

• gold

• rubber

• bronze

• copper wire

How do conductors differ from insulators?

• Conductors make electricity and heat pass through while insulators don’t.

• Conductors and insulators make electricity and heat pass through.

• Conductors and insulators do not make electricity and heat pass through.

• Insulators make electricity and heat pass through while conductors don’t.

Our body is also a good conductor of electricity because of the presence of _________________.

• blood

• hair

• water

• skin

Why is electrical wiring usually covered with a layer of plastic?

• To make it look pretty.

• To help electricity flow along the wire.

• To make it safe.

• To make it strong.

Why are cooking pots made of metals such as iron and aluminum?

• Heat moves quickly through metals.

• Metals are cheap.

• Metals are easy to find.

• Metals don’t melt.

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Which term defines a material that heat does not move through easily?

• conduction

• conductor

• heat

• insulator

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Tony is boiling a pot of water on the stove. The black handle is made of rubber, and the pot is made of copper. Why is the black handle made of rubber and the pot of copper?

• Rubber is good conductor, and copper is a good insulator.

• Rubber is a poor insulator, and copper is a poor conductor.

• Rubber is a good insulator, and copper is a good conductor.

• Rubber is a good conductor, and copper is a good insulator.

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Mr. Stevens set up the demonstration lab for his classes. When both wires touched the coin, the light bulb lit up. What did this tell the students about the coin?

• It is a good insulator.

• It is a good conductor.

• It has low melting point.

• It would be attracted to a magnet.

Which of the following materials is an electrical insulator?

• Aluminum

• Rubber

• Gold

• Copper

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