Question

True or False: As water evaporates, it removes a lot of heat with it.

Answer 1

The statement is true; evaporation of water is a cooling process that absorbs heat energy, particularly from the skin during perspiration, assisting in regulating body temperature.

Step-by-step explanation:

The statement, As water evaporates, it removes a lot of heat with it, is True. Evaporation is a cooling process that happens when water changes from a liquid to a gas. A significant amount of energy, specifically heat energy, is required to break the hydrogen bonds holding water molecules together in liquid form. This energy is absorbed from the surroundings (or the skin, in the case of perspiration), resulting in cooling.

Moreover, the latent heat of vaporization of water is quite high, requiring about 2428 kJ/kg of energy at body temperature to transition from liquid sweat to vapor. This process effectively cools the body in hot conditions. However, high humidity can slow down evaporation, leading to less cooling and potentially causing body temperature to rise.

Answer 2

True, when it evaporates heat goes down, because it’s up the the sky.

Facts: In order for water to evaporate, hydrogen bonds must be broken. Water's heat of vaporization is 540 cal/g.

Because of the need for so much energy to evaporate, as water leaves the surface from which it is evaporating and removes a lot of heat with it.