Evaporative refers to the process by which a liquid turns into vapor, usually due to heat. This occurs when molecules in the liquid gain enough energy to break free from the surface and enter the air. Common examples include water evaporating from a puddle or sweat evaporating from the skin, which helps cool the body. In everyday life, evaporative cooling is a technique used in various applications, such as evaporative coolers or swamp coolers. These devices work by drawing warm air through water-saturated pads, allowing the air to cool before it enters a space, making it a cost-effective way to regulate temperature.