Temperature is a property which determines_________________?
Correct answer: C. In which direction heat will flow between two systems
- A. How much heat a body contains
- B. Whether a body will feel hot or cold to touch
- C. In which direction heat will flow between two systems
- D. How much total absolute energy a body has
Explanation
Temperature determines the direction of heat transfer: heat flows spontaneously from the body at higher temperature to the body at lower temperature until thermal equilibrium is reached. Students often choose b because temperature affects how hot or cold something feels, but that is an effect rather than the defining thermodynamic role of temperature.
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About Thermal Equilibrium and Heat
Thermal equilibrium means that bodies in contact have the same temperature and no net heat flows between them. The topic distinguishes heat from temperature, uses the zeroth law of thermodynamics, and covers heat transfer, specific heat capacity, thermal expansion and the conditions for reaching equilibrium.
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