Hot water freezes faster?

so the other day my earth science teacher told me that hot water freezes faster than cold water.

He said this can be possible because evaporation is a cooling process and the snow when shot in the cold air does this rapidly and freezes quicker.He also told me that that is how the resorts do it.

I hope somebody with more expearence can shed some light on this because with how big of a task it would be for resorts to heat all the water they use for snowmaking i have to say im more than skeptical.
 
Back
Top