energiáknak

Energia is a concept that describes the capacity to do work. It exists in many forms, including kinetic energy, which is the energy of motion, and potential energy, which is stored energy due to position or state. Other forms include thermal energy (heat), chemical energy stored in bonds, electrical energy carried by electrons, and nuclear energy contained within atomic nuclei. Energy can be transformed from one form to another, but the total amount of energy in a closed system remains constant, a principle known as the law of conservation of energy.

Energy is fundamental to all physical processes and biological functions. It powers everything from the movement of planets to the growth of plants and the functioning of human bodies. The study of energy is a central theme in physics and chemistry, with its understanding driving technological advancements and shaping our understanding of the universe. Sources of energy are broadly categorized as renewable, such as solar, wind, and hydroelectric power, which replenish naturally, and non-renewable, like fossil fuels (coal, oil, and natural gas) and nuclear fuels, which are finite. The efficient and sustainable use of energy is a critical global challenge.