Heat transfer – Did you know?

The video explains the concept of heat conduction, highlighting that metals are thermal conductors. It also discusses why wooden or plastic utensils are used for stirring food, as they act as thermal insulators, preventing heat transfer.

What is the primary characteristic of metals in terms of heat transfer?

• They are thermal insulators.

• They are thermal conductors.

• They absorb heat without conducting it.

• They do not conduct heat.

Which of the following materials is a thermal conductor?

• Wood

• Metal

• Glass

• Plastic

Why are wooden or plastic utensils preferred for stirring hot food?

• They are cheaper than metal utensils.

• They are thermal conductors.

• They are more durable than metal utensils.

• They are thermal insulators.

What is the role of thermal insulators in cooking?

• To conduct heat efficiently.

• To increase the cooking temperature.

• To prevent heat from escaping.

• To absorb heat quickly.

Which material would you choose to prevent heat transfer?

• Metal

• Wood

• Copper

• Aluminum