What is the relationship between the rate of evaporation and atmospheric humidity during the water cycle?

Correct answer: They are generally inversely related, when other conditions remain similar

Correct answer: B. Evaporation occurs when water molecules leave a surface and enter the air. The rate depends strongly on the difference between the vapour pressure at the water surface and the vapour pressure already present in the air. When atmospheric humidity is low, this difference is usually larger, so evaporation is faster. When humidity is high, the air is closer to saturation and the difference is smaller, so evaporation generally slows. Temperature, wind speed, sunlight, and surface area also affect evaporation, so “inversely related” means a general relationship when these other factors are comparable, not a strict mathematical rule in every situation. A reverses the usual trend. C ignores the vapour-pressure gradient. D gives an unsupported fixed amount. Memory cue: drier air accepts vapour more readily.