Question

On a hot day if you are sweating, you will feel cooler than on a cooler moist day. This is because

• A. The evaporation of sweat on a cooler moist day raises the body temperature
• B. On a cot moist day you lose less of energy
• C. There is loss of energy when you sweat
• D. The evaporation of sweat on a hot day causes more cooling

Answer 1

The correct option is D The evaporation of sweat on a hot day causes more cooling

Sweating causes a decrease in core temperature through evaporative cooling at the skin surface. As high energy molecules evaporate from the skin, releasing energy absorbed from the body, the skin and superficial vessels decrease in temperature. So, the correct option is "D" (The evaporation of sweat on a hot day causes more cooling).