Thermal Equilibrium TEK 7.8A & 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 direction does heat transfer occur?

Back

Heat always moves from hot to cold.

Front

What happens when two objects at different temperatures come into contact?

Back

Heat will transfer from the hotter object to the cooler object until they reach thermal equilibrium.

Front

What is conduction?

Back

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

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

Front

What happens to the temperature of a substance when heat is added?

Back

The temperature of the substance generally increases as it absorbs heat.

Front

What happens to the temperature of a substance when heat is removed?

Back

The temperature of the substance generally decreases as it loses heat.

Front

What is the effect of adding ice to a warm liquid?

Back

The heat transfers from the warm liquid to the ice, causing the liquid to cool down and the ice to melt.

Front

What is the role of thermal conductors?

Back

Thermal conductors are materials that allow heat to pass through them easily, such as metals.