Imagine two adjacent playing fields, one with a wet surface and the other with a
ID: 803002 • Letter: I
Question
Imagine two adjacent playing fields, one with a wet surface and the other with a dry surface. If you simultaneously measured air temperature above each surface on a sunny summer afternoon, where would you expect the higher temperature? Why? a. Above the dry field. Because of the presence of water, more solar energy is reflected from the wet field surface, and hence its temperature stays cooler, b. Above the wet field. Thanks to the hydrogen bonds, water can absorb a lot of heat, thus keeping the wet surface warmer. c. Above the dry field. Evaporation of water over the wet field requires extra energy, which keeps the surface cooler. d. Above the wet field, because it has lower albedo.Explanation / Answer
answer is C as Wet ground reduces the heating power of solar radiation because some energy goes into evaporating water instead of directly heating the ground. So temperature will be higher for dry field.