Thermal Energy Review

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 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 direct contact between materials.

Front

Define convection.

Back

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

Front

Define radiation.

Back

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

Front

What happens to thermal energy when two objects at different temperatures are in contact?

Back

Thermal energy flows from the hotter object to the cooler object until they reach thermal equilibrium.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat, meaning they are at the same temperature.

Front

How does a refrigerator work in terms of heat transfer?

Back

A refrigerator uses convection to remove heat from the inside by circulating a coolant that absorbs heat and releases it outside.

Front

What is the role of a coolant in a refrigerator?

Back

A coolant absorbs heat from the inside of the refrigerator and releases it outside, helping to keep the interior cool.

Front

What is an example of conduction in everyday life?

Back

An example of conduction is when a metal spoon gets hot after being left in a pot of boiling water.