4.6BC Insulators Conductors and Electricity

All of the following are conductors of electricity EXCEPET:

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• 
• 

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For the lightbulb to light, the object placed in the space between the two wires must be-

• a conductor of electricity

• made of plastic or wood

• at room temperature

• an electrical insulator

Which material is the best insulator?

• Material 1

• Material 2

• Material 3

• Material 4

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This electric circuit can be complete by

• unscrewing the light bulb

• closing the switch

• cutting the wires

• reversing the battery

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

• silver

• wood

• tin

• copper

Why are electrical cords covered with rubber?

Which is NOT an insulator.

• Wool
• Plastic
• Copper
• Glass

What is the difference between a conductor and an insulator?

• An insulator allows electricity to flow through it easily and a conductor does not
• A conductor allows electricity to flow through it easily and an insulator does not.
• An insulator is magnetic and a conductor is not
• A conductor is magnetic and an insulator is not

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A great conductor of energy is:

• wood
• plastic
• metal
• cloth

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Mittens help keep your hands warm in winter because

• they are colorful
• they are fuzzy
• they are conductors
• they are insulators

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