What unit is used to measure energy?

The unit used to measure energy is the Joule. Energy, in scientific terms, is the ability to do work, and the Joule is the standard unit of measure in the International System of Units (SI) for quantifying that energy.

One Joule is defined as the amount of energy transferred when a force of one Newton is applied over a distance of one meter. This relationship highlights the concept of work, which is the transfer of energy through force and displacement. The Joule can also represent different forms of energy, such as kinetic energy, potential energy, and thermal energy, making it a versatile unit in various branches of physics and engineering.

In contrast to the Joule, the meter is a unit of length, the Newton is a unit of force, and the pound is a unit of weight or mass, depending on the context. Thus, these options do not accurately represent energy measurement, while the Joule explicitly defines energy in a manner that is universally accepted in scientific disciplines.