How does heat transfer occur between objects of different temperatures, resulting in the transfer of energy from higher temperature objects to lower temperature objects?

Heat transfer occurs between objects of different temperatures through three main mechanisms: conduction, convection, and radiation. In conduction, heat is transferred through direct contact between the objects. In convection, heat is transferred through the movement of fluids or gases. In radiation, heat is transferred through electromagnetic waves. In all cases, energy flows from the higher temperature object to the lower temperature object until thermal equilibrium is reached.