Masters of Warmth and Chill

What is thermal conductivity?

• The amount of heat required to raise the temperature of a substance

• The ability of a material to conduct electricity

• The ability of a material to transfer heat

• The resistance of a material to temperature changes

Which of the following is the best insulator?

• Copper

• Wood

• Aluminum

• Steel

What property do good thermal conductors have?

• Low density

• High thermal conductivity

• High specific heat

• Low thermal conductivity

Why is air often used as an insulating material?

• Because it is a good conductor of heat

• Because it has high density

• Because it has low thermal conductivity

• Because it is easy to find

What is the main function of insulation materials in buildings?

• To make the building look nice

• To conduct heat into the building

• To prevent the transfer of heat into or out of the building

• To support the structure of the building

Which of the following materials would be a poor choice for a pot handle?

• Plastic

• Wood

• Metal

• Rubber

What does a high thermal conductivity value indicate about a material?

• It is a good insulator

• It is a poor insulator

• It is a good conductor

• It cannot transfer heat at all

Which of the following materials would you expect to have high thermal conductivity?

• Styrofoam

• Glass wool

• Silver

• Wool

What is one common use of thermal insulators in electronics?

• To increase the speed of the electronic device

• To prevent electrical components from overheating

• To conduct electricity better

• To make the device heavier

If you wanted to keep your coffee hot, which type of cup would be the best choice?

• A cup made of thin metal

• A cup made of thick glass

• A cup with a styrofoam exterior

• A cup made of ceramic with a metallic coating