Question

a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase at a temperature lower than the liquids boiling point.

○ sublimation
○ fusion
○ condensation
○ evaporation

question 2 0.5 pts
during physical activity, people will sweat. one of the functions of sweating is to...

○ provide evaporative cooling.
○ make you smell good.
○ reduce air drag.
○ burn calories.

Explanation:

Question 1

• Sublimation: Solid to gas, no liquid phase. Eliminate.
• Fusion: Solid to liquid (melting). Eliminate.
• Condensation: Gas to liquid. Eliminate.
• Evaporation: Liquid to gas at surface, below boiling point. Matches the description.

• Provide evaporative cooling: Sweat evaporates, taking heat from the body, cooling it. This is a key function of sweating.
• Make you smell good: Not a primary function (deodorant/hygeine products do this, not sweat itself). Eliminate.
• Reduce air drag: Sweat doesn't affect air drag. Eliminate.
• Burn calories: Sweating is a result of heat production, not a way to burn calories (calories are burned during the activity causing heat). Eliminate.

Answer:

evaporation

Question 2