Question

In this sentence, “If you have ever held a cup of hot cocoa in your hands, you’ve experienced the movement of thermal energy”, Identify the term used to describe the movement of thermal energy and describe the direction in which thermal energy always moves.

Answer 1

Explanation:

The thermal energy is moving to your hands from the hot cocoa through conduction.

Heat energy always moves from a hotter system to a cooler system if the two systems are connected. This is called thermodynamic work. The hand is one system while the hot cocoa is the other. There is no transfer of matter between the two systems but heat energy. This causes a change in enthalpy in the two systems until both are at equilibrium. This is also in compliance with the laws of thermodynamics.

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