The Heat

Heat is the transfer of energy between objects or systems due to a temperature difference. It flows from the warmer to the cooler area, aiming to reach equilibrium. This transfer occurs through conduction (direct contact), convection (movement of fluids like air or water), or radiation (energy emitted as electromagnetic waves). Heat can cause changes like warming, melting, or expansion. In scientific terms, heat is measured in units like joules or calories and is a form of energy transfer, not a substance itself. Understanding heat helps explain everyday phenomena such as cooking, weather, and insulation.