Thermal Energy

Front

What is thermal energy?

Back

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

Front

What are the three methods of heat transfer?

Back

Conduction, Convection, and Radiation.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation.

Front

How does heat transfer in a microwave?

Back

Heat is transferred by radiation in a microwave.

Front

What happens to molecules during heating?

Back

Molecules move faster and spread apart as they gain thermal energy.

Front

What phase change occurs when a liquid turns into a gas?

Back

The phase change from liquid to gas is called vaporization.

Front

What is an example of convection in everyday life?

Back

Boiling water is an example of convection, where hot water rises and cooler water sinks.

Front

What is an example of conduction?

Back

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