How can water evaporate from a pool in the summer when it is supposed to evaporate at 100°C ?

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How can water evaporate from a pool in the summer when it is supposed to evaporate at 100°C ?

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Water evaporates at any temperature above freezing. The hotter it is, the faster it does so.

Water bottle at 100 degree Celsius. It can evaporate at all temperatures over 0 Kelvin, although the rates of evaporation will differ at different temperatures.

It boils at 100 but evaporates at any temperature. The water is not all at the exact same temperature. The molecules zip around and crash into each other constantly. So each molecule can be far bellow zero in one moment and then far above boiling in another moment as other molecules have bumped into it. This means that at any point in time there are lots of molecules at the surface of the water which have a higher then boiling temperature. And these will be able to escape into the atmosphere. This is called evaporation. The higher the temperature the faster the evaporation.

It *boils* at 100C. This is a different process.

When a liquid is boiling the entire mass of liquid is changing phase, all molecules have enough energy to make the phase transition into a gas.

Below that temperature, molecules near the surface can still jump for it when they get hit just right. It’s a much slower process that occurs only at the surface and only when the air is suitably dry.

The molecules at the surface wander off and can’t find their way back, slowly converting the whole puddle into vapor.

If it’s too humid it won’t happen. Boiling forces the liquid into the gas phase no matter what the humidity level is.

Boiling != evaporation. If that was the case clothes wouldn’t dry unless they were above 100C which isn’t the case. Water is always evaporating