Heat energy is a form of energy that is transferred between objects due to a temperature difference. It flows from warmer objects to cooler ones until thermal equilibrium is reached. This transfer can occur through conduction, convection, or radiation, and is essential in various natural processes and human-made systems. In everyday life, heat energy is involved in cooking food, heating homes, and powering engines. For example, when you boil water on a stove, the heat energy from the burner is transferred to the water, causing it to reach its boiling point. Understanding heat energy is crucial in fields like thermodynamics and engineering.