Thermal Energy and Heat Transfer Concepts Chapter 3

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 is heat transfer?

Back

Heat transfer is the movement of thermal energy from one object or substance to another due to a temperature difference.

Front

What are the three methods of heat transfer?

Back

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

Front

Define conduction.

Back

Conduction is the transfer of heat through a material without the movement of the material itself, typically occurring in solids.

Front

Define convection.

Back

Convection is the transfer of heat by the movement of fluids (liquids or gases) due to differences in temperature and density.

Front

Define radiation.

Back

Radiation is the transfer of heat in the form of electromagnetic waves, such as infrared radiation, and does not require a medium.

Front

What is a thermal conductor?

Back

A thermal conductor is a material that allows thermal energy to pass through it easily, such as metals.

Front

What is a thermal insulator?

Back

A thermal insulator is a material that resists the flow of thermal energy, such as rubber or glass wool.

Front

What happens to the kinetic energy of particles when a substance is heated?

Back

The kinetic energy of the particles increases when a substance is heated.

Front

What happens to the kinetic energy of particles when a substance is cooled?

Back

The kinetic energy of the particles decreases when a substance is cooled.