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Why did the water in our experiment evaporate more slowly than we thought it would?
My son and I did an experiment to see if water would evaporate more quickly outdoors than indoors--the weather outdoors has been rainy with a high relative humidity percentage--70-90%--and the temperature indoors has been kept at a constant 69 degrees while the temperature outdoors has been 40-60 degrees. We thought the water indoors would evaporate at a faster rate because it is drier and warmer, but that is not what happened. The water outdoors evaporated much more quickly. Why? We are researching and racking our brains....help!
1 Answer
- Number 6Lv 61 decade agoFavorite Answer
Was it slightly windy outdoors?
If so then the vapour concentration just above the surface of the water will have been reduced allowing more evaporation.
Indoors with no air movement then the Humidity just above the water would be high slowing evaporation down.
Other thoughts:
If it was sunny outside and the container was a dark colour then it would absorb heat and increase in temp.
