Rice-a-roni

[Night Train]

So Im cooking some rice-a-roni tonight and I am reading the directions:

"add 1-3/4 cup water..." UNLESS YOU ARE IN A HIGH ALTITUDE THEN MAKE IT TWO CUPS.

Does anyone know why this is? Does water evaporate faster in high altitudes? If so...why?

[Cindy Hamlin]

http://www.howstuffworks.com/question63.htm

[chip anderson]

Night Train:

Water boils at a lower temperature at higher altitudes and at a lower temperature. The reason, there is less air pressure on the water. In fact I think that if you put it in a perfect vaccum it boils at any temperature at which it is a liquid.

Chip