Heat and Temperature

Front

What is the definition of heat?

Back

Heat is the energy transferred between substances or systems due to a temperature difference.

Front

What is temperature?

Back

Temperature is a measure of the average kinetic energy of the particles in a substance.

Front

Why does a diver wear a wet suit?

Back

To keep in thermal energy.

Front

What happens to the temperature of a substance as its average kinetic energy increases?

Back

The temperature of the substance increases.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two substances in contact do not exchange heat, meaning they are at the same temperature.

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself.

Front

What is convection?

Back

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

Front

What is radiation?

Back

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

Front

What is the effect of adding heat to a closed system?

Back

Adding heat to a closed system increases the energy of the particles, which can lead to changes in temperature and state.

Front

What is evaporation?

Back

Evaporation is the process by which molecules at the surface of a liquid gain enough energy to enter the gas phase.