Principles of Energy and Heat Transfer

Front

What is internal energy?

Back

The total energy contained within a thermodynamic system, comprising the random kinetic energy of its constituent particles and the potential energy arising from the forces between these particles.

Front

What is work in the context of energy transfer?

Back

The energy transferred to or from an object via the application of a force along a displacement.

Front

What is heat?

Back

The transfer of thermal energy from a hotter system to a cooler system as a result of the temperature difference between them.

Front

What is radiation?

Back

Energy emitted from a source that travels as either waves or particles.

Front

What does mass-energy equivalence mean?

Back

The concept that mass and energy are interchangeable.

Front

What is the first law of thermodynamics?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is thermal equilibrium?

Back

A state in which two objects in thermal contact no longer transfer heat to each other.

Front

What is conduction?

Back

The transfer of heat through a material without the movement of the material itself.

Front

What is convection?

Back

The transfer of heat by the physical movement of a fluid (liquid or gas).

Front

What is the role of insulation in heat transfer?

Back

Insulation reduces the rate of heat transfer between objects at different temperatures.