Review Thermal Energy

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in an object.

Front

What are the three main methods of heat transfer?

Back

The three main methods of heat transfer are conduction, convection, and radiation.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when two objects at different temperatures touch each other.

Front

What is convection?

Back

Convection is the transfer of heat through fluids (liquids and gases) caused by the movement of the fluid itself. Hot fluids rise while cold fluids sink.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as light. It does not require a medium to travel through.

Front

What happens to hot air in a hot air balloon?

Back

Hot air rises because it is less dense than cooler air, causing the balloon to inflate.

Front

What is a nonmetal?

Back

A nonmetal is an element that typically has a dull luster, is brittle, and is a poor conductor of heat and electricity.

Front

What is the result of two objects at different temperatures touching each other?

Back

They will eventually reach thermal equilibrium, where both objects have the same temperature.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Front

What is the behavior of hot and cold fluids in convection?

Back

Hot fluids rise and cold fluids sink, creating a convection current.