Heat Transfer Flashcard

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer areas of a liquid or gas rise and cooler areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

Front

Example of conduction in everyday life?

Back

A spoon heating up in a cup of hot cocoa.

Front

Example of convection in everyday life?

Back

Heating air in a room using a radiator.

Front

Example of radiation in everyday life?

Back

The sun heating the sand at the beach.

Front

Which material is the best conductor of thermal energy?

Back

Metal is the best conductor of thermal energy.

Front

What happens to air when it is heated?

Back

Heated air becomes less dense and rises, creating convection currents.

Front

What is an insulator?

Back

An insulator is a material that does not conduct heat well, preventing heat transfer. Examples include plastic, wood, and glass.

Front

How does heat transfer affect cooking?

Back

Different methods of heat transfer (conduction, convection, radiation) are used in cooking to prepare food.