Evaporation Rate of Water

What is the order of magnitude of the evaporation rate of water from a Petri dish placed in a room at around 23 degrees Celsius and a humidity of about 50%? A few grams? A few milligrams? Watch the video to find out.

[@denisenay5543]

I would think a number of variables would affect the rate...ie wind, whatever is surrounding the water and whether the water is stagnant or moving.

[@danzhao3344]

the surface area as well.....

[@ibphysicshelp]

You are both correct: there are multiple factors affecting the evaporation rate. The video intends to show the order of magnitude of this quantity in some typical conditions....

[@muyassariqbal3591]

And on which the milk evaporates

[@AsratMengesha]

We havr been taught myths about water evaporation. Thy taught us that water evaporates at 100 degree centigrade. What a myths? How much water? One pot?what 10 pots, 1000000000000 ,pots? Now, they changed it to " rate" of evaporation? Is the rate the same. What about heating watter underground where therr is no escape for the smoke of watter??? How much temperature needed to evaporate the whole ocean water?Thanks.

[@alaarimawi2840]

water boils at 100 degrees..

[@ANONM60D]

Rate of evaporation is higher when boiling. But water still evaporates below this number. That is how your clothes dry outside.

[@ibphysicshelp]

Just to add, for completeness: Vaporization is the process that a substance undergoes when it changes state (or phase) from liquid to gas. When heated up, a liquid changes its state into a gas at a definite temperature called its boiling point and it is accompanied by bubbles that form within the liquid. This is a rapid vaporization process that occurs throughout the liquid. (It is called boiling). Evaporation is the process of vaporization that occurs at all temperatures (below the boiling point) at the surface of liquids. This occurs when some molecules at the surface of the liquid have sufficient kinetic energy to escape the liquid and become vapours. There are a numbers of factors that affect the evaporation rate of a liquid. (The rate refers to the mass of liquid evaporated per second.)