Difference in temperature and heat

When we talk about the difference in temperature, we are referring to the disparity in temperature between two points or two systems. On the other hand, heat is the transfer of thermal energy from a higher temperature region to a lower temperature region.

Sensible heat

Sensible heat refers to the heat transfer that results in a change in temperature of a substance without any phase change. In other words, it is the heat that can be sensed or measured by a thermometer. Sensible heat is directly related to the temperature difference between the substance and its surroundings.

Latent heat

Latent heat, on the other hand, is the heat transfer that occurs during a phase change of a substance, such as from a solid to a liquid (fusion) or from a liquid to a gas (vaporization). During these phase changes, the temperature of the substance remains constant even though heat is being added or removed. This heat is called latent heat because it is hidden or stored within the substance.

Heat of vaporization

Heat of vaporization is a specific type of latent heat that refers to the amount of heat energy required to convert a substance from a liquid to a vapor at its boiling point. It is a measure of the strength of the intermolecular forces holding the liquid together. The heat of vaporization is typically much higher than the heat required to change the temperature of the substance.

Explanation

By differencing the temperature, we are essentially looking at the change in temperature between two points or systems. This change in temperature can be measured using a thermometer and is directly related to the sensible heat. Sensible heat is the heat transfer that results in a change in temperature without any phase change.

Therefore, the correct answer is option 'A' - Sensible heat. This is because the difference in temperature directly corresponds to the sensible heat, which is the heat that can be sensed or measured by a thermometer. The other options, such as latent heat and heat of vaporization, are related to phase changes and do not directly depend on the difference in temperature.