Only when you are dinning somewhere other than your home, if it is to hot wait for it to cool down, if you can't wait, do it very unnoticeable.
To blow the steam away from your food so it will cool down
It's for blowing your top.
yes
An easterly
A sea breeze.
updraft and downdraft
It cools because the moisture inside the food vaporize and carries away heat. That is why the steam from your food is hot.
Erosion by abrasion, or aeolian erosion.
Food. You call it food.
The blowing up of the USS Maine
The blowing up of the USS Maine
Yes, the food that is hot trades its heat inside with the cooler air around it blowing on it makes this process speed up.
To keep the germs from being transferred to the food.