When is the rate of exchange of energy or matter faster?

The rate of exchange of energy or matter is faster when there is a greater temperature difference because heat transfer naturally occurs from regions of higher temperature to regions of lower temperature. The larger the temperature differential between two bodies, the greater the energy transfer rate will be. This principle applies to conduction, convection, and radiation. In conductive processes, for example, when two objects at very different temperatures are in contact, energy flows rapidly from the hotter object to the cooler one. Similarly, in convection, fluids will circulate more vigorously when there is a significant difference in temperature, enhancing energy exchange. Thus, a greater temperature difference leads to a more efficient and rapid transfer of energy.