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As a result of a temperature differential, energy is transferred from one body to another and is known as heat. The flow of heat energy is in the direction of moving from a material with a higher temperature to one with a lower temperature. This is due to the fact that faster-vibrating molecules pass their energy on to slower-vibrating ones. Its heat content is another name for the vibrational energy. The body is either hot or chilly depending on its level of heat. The body will become warmer than the amount of heat increases.  It is possible to change the energy form of heat into other energy types. For instance, heat is transformed into mechanical energy in motorised vehicles.