Which term describes the sum of the kinetic and the potential energy of all the molecules in an object?

Which term describes the sum of the kinetic and the potential energy of all the molecules in an object?

• A. Temperature
• B. Compound Machine
• C. Wheel and Axle
• D. Thermal Energy

Answer: (D)

Thermal energy is the total energy stored in the microscopic motion and interactions of all the molecules in an object. It includes kinetic energy from how fast the particles move and potential energy from the forces between them. Temperature is a measure of the average kinetic energy per molecule, not the total energy, so objects at the same temperature can have different amounts of thermal energy depending on how much matter they contain. The other terms describe devices or a property that isn’t about total molecular energy. So the correct term is thermal energy.

Thermal energy is the total energy stored in the microscopic motion and interactions of all the molecules in an object. It includes kinetic energy from how fast the particles move and potential energy from the forces between them. Temperature is a measure of the average kinetic energy per molecule, not the total energy, so objects at the same temperature can have different amounts of thermal energy depending on how much matter they contain. The other terms describe devices or a property that isn’t about total molecular energy. So the correct term is thermal energy.