The Celsius scale has its zero point as the freezing point of water. Both scales have the same amount of energy change from one degree to the next. You can do meaningful math calculations only on an absolute scale such as the Kelvin. C. Cold- below the freezing point of water. Conduction is transfer through solids by the transfer of vibratory shaking from one molecule to another.
Convection is a transfer through fluids under the influence of an outside force, such as gravity.
Hence, we say that heat rises away from the pull of gravity. In other words hotter molecules, moving faster than slower ones, push their neighbors aside to create a less dense and lighter parcel. Colder, slower moving ones are more dense and fall downwards toward the pull of gravity and set up a circulation pattern. Radiation is an oscillating strength of electromagnetic waves creating a movement in distant electrical and magnetic fields. Thus radiation can transfer energy without the need of a medium.