What is evaporation?

What is evaporation?

• A. The change of a substance from a liquid to a gas from a large body of water
• B. The condensation of water vapor
• C. The freezing of water into ice
• D. The evaporation of steam on a surface

Answer: (A)

Evaporation is the process by which a liquid becomes a gas, usually at the surface and below the liquid’s boiling point. Molecules at the surface gain enough energy to break free and escape into the air, so liquids gradually turn into vapor. This happens with water from a lake, puddle, or any exposed liquid surface, driven by heat, wind, and lower surrounding humidity. That description fits because it’s about a liquid turning into a gas. The other options describe different processes: condensation is gas turning into liquid, freezing is liquid turning into solid, and steam is already a gas, so talking about its evaporation doesn’t fit.

Evaporation is the process by which a liquid becomes a gas, usually at the surface and below the liquid’s boiling point. Molecules at the surface gain enough energy to break free and escape into the air, so liquids gradually turn into vapor. This happens with water from a lake, puddle, or any exposed liquid surface, driven by heat, wind, and lower surrounding humidity.

That description fits because it’s about a liquid turning into a gas. The other options describe different processes: condensation is gas turning into liquid, freezing is liquid turning into solid, and steam is already a gas, so talking about its evaporation doesn’t fit.