Unit 2: Thermal Energy Assessment Review

Front

What is thermal energy?

Back

Thermal energy is the total energy of all the particles in an object due to their motion and position. It is related to temperature and heat.

Front

What happens to molecules at absolute zero?

Back

At absolute zero, the molecules that make up a sample wouldn't be moving at all.

Front

How does temperature relate to molecular motion?

Back

As the molecules of a sample speed up, the temperature of the sample increases.

Front

What is the relationship between heat and temperature?

Back

Heat is the transfer of thermal energy from one object to another, while temperature measures the average kinetic energy of the molecules in a substance.

Front

What is conduction?

Back

Conduction is the process of heat transfer 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 and density.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, such as light or infrared radiation.

Front

What is the significance of thermal equilibrium?

Back

Thermal equilibrium occurs when two objects reach the same temperature and no heat flows between them.

Front

What is the effect of adding heat to a substance?

Back

Adding heat to a substance generally increases its temperature and can cause a change in state, such as melting or boiling.

Front

What is the difference between temperature and thermal energy?

Back

Temperature is a measure of the average kinetic energy of particles, while thermal energy is the total energy of all particles in a substance.