What is another term for dew point?

Dew point refers to the temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid water. This process is intrinsically linked to condensation, as reaching the dew point means the air can no longer hold all of its moisture in vapor form, leading to the formation of dew, fog, or clouds.

Understanding the relationship between dew point and condensation is crucial because it reflects on humidity and weather conditions. When air cools down to its dew point, the water vapor in the air begins to change into liquid water, demonstrating the direct correlation between the two concepts.

The other terms mentioned in the choices pertain to different physical processes not directly related to the definition of dew point. Evaporation refers to the process of turning from liquid into vapor, compression involves increasing pressure on a substance, and expansion relates to the increase in size or volume of a gas under lower pressure. None of these incorporate the critical aspect of condensation associated with dew point.