Which process is liquid water turning into gas when energy is added?

Which process is liquid water turning into gas when energy is added?

• A. Condensation
• B. Precipitation
• C. Transpiration
• D. Evaporation

Answer: (D)

Adding energy to liquid water increases the motion of its molecules. When enough energy is absorbed, molecules at the surface gain enough energy to break free from the liquid and enter the air as gas. This change from liquid to gas is evaporation, and it can happen at any temperature and mainly occurs at the surface, not throughout the entire body of water. Evaporation happens faster with more surface area, warmer temperatures, and drier air that carries away the vapor. Condensation is gas turning into liquid; precipitation is water falling as rain or snow from clouds; transpiration is water vapor released by plants.

Adding energy to liquid water increases the motion of its molecules. When enough energy is absorbed, molecules at the surface gain enough energy to break free from the liquid and enter the air as gas. This change from liquid to gas is evaporation, and it can happen at any temperature and mainly occurs at the surface, not throughout the entire body of water. Evaporation happens faster with more surface area, warmer temperatures, and drier air that carries away the vapor.

Condensation is gas turning into liquid; precipitation is water falling as rain or snow from clouds; transpiration is water vapor released by plants.