What term would you use to describe the movement of thermal energy between a person’s body and the frigid water she jumped into two minutes ago?

Heat transfer is the term you would use to describe the movement of thermal energy between a person's body and the frigid water she jumped into two minutes ago.

Explanation:

Thermal energy refers to the energy contained within a system that is responsible for the system's temperature, with heat being the flow of thermal energy. All matter is made up of molecules and atoms, and the motion of these is what creates heat. The more motion of molecules and atoms, the more heat or higher temperature the matter or system will have. But heat can be transferred, and it can be done with different processes: conduction, convection and radiation. When a person jumps into frigid water, the process of conduction of heat transfer starts to be activated, as the body is in direct contact with the water, and the energy trapped inside the body starts to be released into the cold water, as heat will always flow from where it is higher to where it is lower. Conduction, therefore, occurs when two different objects that have different temperatures, are in contact with each other.