Energy

Energy is a fundamental physical quantity that represents the capacity to perform work or produce change. It exists in various forms, including kinetic energy (the energy of motion), potential energy (stored energy based on position), thermal energy (related to temperature), chemical energy (stored in chemical bonds), nuclear energy (stored in atomic nuclei), and electromagnetic energy (like light). Energy can be transformed from one form to another but cannot be created or destroyed, a principle known as the conservation of energy. Energy is measured in units such as joules or kilowatt-hours and plays a crucial role in physical processes and everyday life, driving everything from machinery and transportation to biological functions and electronic devices.