Grade 5 Thermal Energy Quiz

What is a conductor?

• A type of insulator

• A type of heat sink

• A material that allows the flow of heat or electricity.

• A person who directs an orchestra

Give an example of a good conductor of heat.

• Rubber

• Plastic

• Wood

• Copper

What is an insulator?

• A type of conductor

• Something that generates heat, electricity, or sound

• A material that easily allows heat, electricity, or sound to pass through it

• A material or device that does not easily allow heat, electricity, or sound to pass through it.

Provide an example of a good insulator of heat.

• Metal

• Water

• Wood

• Glass

Explain why metals are good conductors of heat.

• Metals have free-moving electrons.

• Metals have a low density.

• Metals have a high resistance to heat.

• Metals have strong magnetic properties.

Why are materials like wood and plastic good insulators of heat?

• They have low thermal conductivity

• They have high thermal conductivity

• They are transparent to heat

• They are good conductors of heat

What happens to the particles in a conductor when it is heated?

• The particles gain kinetic energy and vibrate more, leading to an increase in resistance.

• The particles transform into a different state of matter, causing the conductor to become superconductive.

• The particles lose kinetic energy and slow down, leading to a decrease in resistance.

• The particles shrink in size and become more tightly packed together.

How do insulators prevent the transfer of heat?

• Insulators only work in cold temperatures

• Insulators increase the flow of heat energy

• Insulators have no effect on the flow of heat energy

• Insulators reduce the flow of heat energy

Why are metals used in cooking pots and pans?

• Metals are soft and easy to shape

• Metals conduct heat well and distribute it evenly.

• Metals are colorful and attractive

• Metals are lightweight and easy to handle

Explain how insulating materials are used in homes to conserve energy.

• Insulating materials are only used for aesthetic purposes in homes.

• Insulating materials have no impact on energy conservation in homes.

• Insulating materials increase heat transfer and cause interior temperature fluctuations.

• Insulating materials reduce heat transfer and help maintain stable interior temperature.