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 heat from the sun.

Front

What is an example of conduction?

Back

An ice cube melting in a person’s hand.

Front

What is an example of convection?

Back

A pot of water boiling on a stove, where the hot water rises and cooler water sinks.

Front

What is an example of radiation?

Back

The sun heating water in a swimming pool.

Front

In heat transfer, heat always flows from __________ to __________.

Back

Hotter to colder.

Front

What happens to a hot liquid or air in convection?

Back

It expands, becomes less dense, and rises.

Front

What is the role of density in convection?

Back

Less dense fluids rise while more dense fluids sink, creating a convection current.

Front

How does conduction occur in solids?

Back

In solids, conduction occurs as vibrating particles transfer energy to neighboring particles.