Why does water get cooler when you pour it into a glass covered with a wet cloth and leave it in a shaded place?
Answer
Because evaporation removes heat from the water.
The correct answer is Because evaporation removes heat from the water. — The shaded area limits further heat gain from the sun.
Step-by-step solution
- Heat from the sun increases the temperature of the water.
- The wet cloth increases the surface area and keeps the water moist.
- During evaporation, water molecules leave the surface and require energy.
- This energy is taken from the remaining water, reducing its temperature.
- The shaded area limits further heat gain from the sun.
Common mistake: Thinking the water freezes instead of evaporating
Concept tested: Evaporation cooling effect
Published · How this solution was prepared and checked
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