A type of air cooler works by blowing air from the room through a sponge soaked in water. Explain how blowing air through a sponge soaked in water lowers the temperature of the air. __ 4.. .

## Step 1<br />The process of cooling air when it passes through a water-soaked sponge is based on the principles of heat transfer and the properties of water. When air is blown over a wet sponge, the water on the sponge absorbs the heat from the air. This is an example of evaporative cooling.<br /><br />## Step 2<br />Evaporative cooling is a natural process where a liquid, in this case water, absorbs heat when it evaporates. This is because the evaporation of water is an endothermic process, meaning it requires energy, which is taken from the heat in the air.<br /><br />## Step 3<br />As the air passes over the wet sponge, the water molecules on the surface of the sponge absorb the heat energy from the air. This absorption of heat energy cools the air.<br /><br />## Step 4<br />The cooling effect is more noticeable in dry and hot climates because the rate of evaporation is higher. This is due to the fact that the difference in temperature between the air and the water is greater, leading to more heat being absorbed by the water.