The change of a liquid into vapor at a temperature below its boiling point is called evaporation.

Here's a breakdown:

* Boiling Point: This is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid, and the liquid changes into a vapor.

* Evaporation: This occurs when molecules at the surface of a liquid gain enough energy to escape into the surrounding air. This can happen at any temperature, but it happens faster at higher temperatures.

Factors that influence evaporation:

* Temperature: Higher temperatures lead to faster evaporation.

* Surface Area: A larger surface area exposes more liquid molecules to the air, leading to faster evaporation.

* Air Movement: Wind or air currents carry away evaporated molecules, reducing the vapor concentration near the liquid surface and promoting further evaporation.

* Humidity: High humidity means there's already a lot of water vapor in the air, slowing down the rate of evaporation.

Let me know if you have any other questions!