Question

When standing near a lake, you feel
A.Hot
B.Cold
C.Dry
D.None

Answer 1

Hint: To solve this question, first we will talk about the lake and the concept of evaporation, what happens when molecules collide, etc. we will also study the effect of wind and temperature effects which bring change in the surrounding or nearby of the lake. And hence this information will help us in approaching our solution to this question.

Complete answer:
When you stand near a lake, you feel cool around you with its surroundings. This happens due to evaporation. Evaporation is a kind of vaporization that occurs on the surface of a liquid as it changes or converts into the gas phase. The surrounding gas must not be saturated with the evaporating substance present in the surrounding. When the molecules of the liquid collide, they transfer the energy to each other based on the fact that they collide with each other. Also, as long as the temperature of your body is higher than the temperature of the surrounding medium (for example air or water present there), your body will give of heat. The reason the water feels colder than air is because water present is the better conductor of the two. The temperature of water is the same as a temperature as air technically, as a volume of air that is 30 degree C is the same temperature as a volume of water that is also 30-degree C. As we know that water is a good heat conductor whereas air is a good insulator. As during day time, air over the land becomes heated up, raises upward and that creates an area of low pressure. Hence, air over the surface of the lake is cooler. So, it moves towards the land where mainly lower pressure exits. And this is the reason during a day time a cool breeze flows from lake to the land nearby which is present. So, basically due to evaporation, water in gaseous state is present in air and this cools down the temperature of its surroundings.

Hence, the correct option is B - Cold

Note: As due to the flow of high-pressure air present over the lake blows toward low pressure air that is present over land, so we feel relief. Also, generally there is movement of air which is caused by temperature or pressure differences is wind.