What happens to the temperature of dry air during the evaporation of water in an evaporative cooling system?

In an evaporative cooling system, the process of evaporation leads to a reduction in temperature of the dry air. When water evaporates, it absorbs heat from its surroundings in order to transition from a liquid state to a vapor state. This process is known as latent heat absorption. As the water molecules take in heat energy to evaporate, the remaining air temperature decreases, leading to a cooling effect in the environment.

This principle is widely applied in evaporative coolers, where moisture is added to the air to create a more comfortable and cooler atmosphere. Thus, the correct answer is that the temperature drops significantly during this process.