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

Can energy be destroyed?

Back

No, energy cannot be destroyed; it can only be transferred or transformed from one form to another.

Front

What direction does heat always move?

Back

Heat always moves from hot to cold.

Front

What happens to molecules at absolute zero?

Back

At absolute zero, the motion of molecules theoretically comes to a complete stop.

Front

How does an air conditioner cool the air?

Back

An air conditioner cools the air by making the molecules slow down.

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).

Front

What is radiation?

Back

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

Front

What is the relationship between temperature and thermal energy?

Back

As temperature increases, the thermal energy of the particles in a substance also increases.

Front

What is absolute zero?

Back

Absolute zero is the lowest possible temperature, 0 Kelvin, where all molecular motion stops.