CONDUCTION,CONVECTION AND RADIATION

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer, less dense areas rise and cooler, denser areas sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, without the need for a medium.

Front

How does heat transfer from a hot cup of coffee to the surrounding air?

Back

Heat transfers from the hot coffee to the surrounding air primarily through convection.

Front

What is an example of heat transfer by radiation?

Back

An example of heat transfer by radiation is feeling warmth from a campfire.

Front

What happens to a liquid when it is heated?

Back

When a liquid is heated, it expands, becomes less dense, and rises, creating convection currents.

Front

What is the main difference between conduction and convection?

Back

Conduction occurs through direct contact, while convection involves the movement of fluids.

Front

What is an example of conduction?

Back

An example of conduction is a metal spoon getting hot when placed in a hot soup.

Front

What is the role of density in convection?

Back

In convection, warmer fluids are less dense and rise, while cooler fluids are denser and sink, creating a current.

Front

What is the definition of thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance, related to its temperature.