The process of converting liquid into vapor is called evaporation. This natural phenomenon occurs when molecules in a liquid gain sufficient energy to transition into the gaseous state. Evaporation can happen at any temperature, although it occurs more rapidly at higher temperatures when the energy of the molecules is greater. This process plays a crucial role in the water cycle, contributing to cloud formation and weather patterns. Evaporation is also commonly observed in daily life, such as when puddles dry up after rain or when a wet surface becomes dry over time. It's essential for various scientific and industrial applications as well.