What is the effect of wind speed on the rate of evaporation? Explain with a practical example.

Increasing wind speed increases the rate of evaporation. This is because wind carries away the water vapor molecules that have evaporated from the surface of the liquid. 

By removing these vapor molecules, the concentration of water vapor above the liquid surface decreases, creating a steeper concentration gradient and allowing more liquid molecules to escape into the air. 

A practical example is that clothes dry faster on a windy day than on a still day, as the wind blows away the water vapor, preventing saturation of the air near the clothes.