Explain how evaporation cools the water.

Sure, here's a step-by-step explanation of how evaporation cools water:

1. Evaporation is a process where liquid turns into gas. In the case of water, this happens when its molecules gain enough energy to change from a liquid state to a gaseous state. This energy is typically provided by heat.

2. When the water molecules gain enough energy, they start to move faster. Some of these fast-moving molecules at the surface of the water can escape into the air, turning from liquid to gas. This is evaporation.

3. However, not all molecules have the same amount of energy. In a body of water, some molecules will have more energy (and be moving faster) than others.

4. When the faster, higher-energy molecules escape from the water, they take their energy with them. This means that the average energy of the remaining water molecules goes down.

5. Temperature is a measure of the average energy of the molecules in a substance. So when the average energy of the water molecules goes down, the temperature of the water goes down as well.

6. Therefore, evaporation cools the water. This is why we feel cooler when we're wet and a breeze blows: the wind helps more water evaporate from our skin, taking away heat and cooling us down.