Which process involves the change in temperature of a thermodynamic system?

• A. Latent heat
• B. Sensible heat
• C. Pressure changes
• D. Density variations

Answer: (B)

The process that involves a change in temperature of a thermodynamic system is sensible heat. Sensible heat refers to the heat absorbed or released by a substance during a temperature change that does not result in a phase change. When sensible heat is added to or removed from a substance, its temperature changes, which is measurable and can be felt, hence the term 'sensible.'

In contrast, latent heat pertains to the heat absorbed or released during a phase change (like melting or boiling), where the temperature remains constant despite the energy transfer. Pressure changes and density variations are also important in thermodynamics, as they can affect the state of a system, but they do not directly refer to the temperature change of a substance. Therefore, the correct focus on the relationship between heat and temperature change in this context is aptly represented by sensible heat.