Thermal Energy Practice

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance. It is related to temperature and the amount of substance.

Front

What is temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance. It indicates how hot or cold a substance is.

Front

What does it mean for two samples to be at equilibrium?

Back

Two samples are at equilibrium when they are at the same temperature and there is no net transfer of thermal energy between them.

Front

How does thermal energy transfer occur?

Back

Thermal energy transfer occurs through conduction, convection, and radiation.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy through direct contact between materials.

Front

What is convection?

Back

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

Front

What is radiation?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, such as light.

Front

What happens to thermal energy when a substance is heated?

Back

When a substance is heated, its particles gain kinetic energy, causing the temperature to rise.

Front

What happens to thermal energy when a substance is cooled?

Back

When a substance is cooled, its particles lose kinetic energy, causing the temperature to drop.

Front

What is the relationship between thermal energy and temperature?

Back

As thermal energy increases, the temperature of a substance generally increases, assuming the amount of substance remains constant.