why do hot and cold water sound different when they’re being poured?

Question

I was making tea and thought “yes, you can tell right away by the sound if you’re pouring hot water vs cold.”

In: 8

Answer 1

During the pour you briefly increase the surface area considerably. Hot water will use this opportunity to rapidly evaporate, mixing a lot of gas in with the liquid, breaking up the stream and changing the whole dynamics of the pour.

Cold water doesn’t do this, and just falls under gravity.