Thermal Energy Chapter 3 Flashcard

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact with each other reach the same temperature and no heat flows between them.

Front

How is energy transferred in a system?

Back

Energy is transferred in a system by being divided among all of the molecules involved.

Front

What determines the thermal energy of an object?

Back

The thermal energy of an object is determined by its temperature and the number of molecules it contains.

Front

How does the size of a container affect thermal energy?

Back

A larger container, like a bowl compared to a cup, can hold more thermal energy even if both have the same temperature.

Front

What is temperature a measure of?

Back

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

Front

What happens to thermal energy when an object cools down?

Back

When an object cools down, it loses thermal energy to its surroundings until it reaches thermal equilibrium with them.

Front

What is the relationship between temperature and thermal energy?

Back

Higher temperature generally indicates higher thermal energy, but the total thermal energy also depends on the amount of substance.

Front

What is the difference between heat and thermal energy?

Back

Heat is the transfer of thermal energy from one object to another, while thermal energy is the total energy of all the molecules in an object.

Front

What is conduction?

Back

Conduction is the process of heat transfer through direct contact between materials.

Front

What is convection?

Back

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