Understanding Conductors and Insulators

What is a conductor?

• A conductor is a device that stores electrical energy.

• A conductor is a material that facilitates the flow of electricity or heat.

• A conductor is a type of insulator that blocks electricity.

• A conductor is a material that only allows the flow of air.

Give two examples of conductors.

• Wood

• Copper, Aluminum

• Rubber

• Plastic

What is an insulator?

• A material that amplifies heat transfer.

• An insulator is a material that resists the flow of electricity or heat.

• A conductor that enhances the flow of electricity.

• A device that generates electricity efficiently.

Name two materials that are insulators.

• Aluminum

• Rubber, Glass

• Iron

• Copper

Why are metals good conductors of electricity?

• Metals conduct electricity due to their high density.

• Metals have no electrons, making them poor conductors.

• Metals are good conductors of electricity due to the presence of free-moving electrons.

• Metals are good insulators of electricity.

What happens to electricity in an insulator?

• Electricity flows freely through an insulator.

• Electricity does not flow through an insulator.

• Electricity is stored in an insulator.

• Insulators enhance the flow of electricity.

Can wood conduct electricity? Why or why not?

• No, wood does not conduct electricity well.

• Wood conducts electricity as well as metal.

• Yes, wood is a good conductor of electricity.

• Wood can conduct electricity under certain conditions.

What is the main difference between conductors and insulators?

• Conductors allow current to flow; insulators resist current flow.

• Insulators allow current to flow; conductors resist current flow.

• Conductors and insulators have the same electrical properties.

• Conductors are always made of metal; insulators are always made of plastic.

How does temperature affect the conductivity of materials?

• Temperature has no effect on conductivity.

• Temperature affects conductivity by increasing resistance in conductors and potentially increasing conductivity in semiconductors.

• Higher temperatures always decrease conductivity in all materials.

• Conductivity is only affected by material type, not temperature.

Why is rubber used to cover electrical wires?

• Rubber is used to make the wires more flexible.

• Rubber is used to enhance the color of the wires.

• Rubber is used because it is a conductor of electricity.

• Rubber is used to cover electrical wires because it is a good insulator and protects against electrical shocks.