Thermal Equilibrium (7.8B)

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature, resulting in no net heat transfer between them.

Front

What are the three methods of heat transfer?

Back

Conduction, convection, and radiation.

Front

How does conduction transfer thermal energy?

Back

Conduction transfers thermal energy through direct contact between materials, where faster-moving particles collide with slower-moving ones.

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 and density.

Front

What is radiation in terms of thermal energy?

Back

Radiation is the transfer of thermal energy through electromagnetic waves, which can occur in a vacuum.

Front

What happens to thermal energy in a well-insulated house on a hot day?

Back

Thermal energy moves from warmer rooms to cooler rooms until thermal equilibrium is reached.

Front

What role does insulation play in a house?

Back

Insulation minimizes heat transfer, keeping the house warm in winter and cool in summer.

Front

How does thermal energy transfer when an ice cube is placed in warm water?

Back

Thermal energy transfers through a combination of conduction (direct contact) and convection (movement of water).

Front

At what point does heat stop moving between two objects?

Back

Heat stops moving when both objects reach the same temperature.

Front

What is the effect of temperature difference on heat transfer?

Back

Heat transfer occurs from the object with a higher temperature to the one with a lower temperature until thermal equilibrium is achieved.