| Lim -
Yes! There can actually be a whole lot of water vapor in the air we breathe. The word for how much water vapor there is in the air is "humidity". And the warmer it is, the more humidity the air can hold. At room temperature, one cubic meter of air can hold as much as 20 grams of evaporated water! But you don't have to believe me. Here's something you can try to prove it to yourself... Take a cold can of soda or a glass of cold ice water and set it out in the air. The air around the glass is colder than the rest of the air, so it can hold less water vapor. And when the air can't hold as much water vapor as it actually has, some of the water will condense into a liquid form. This is why you should see liquid water condensed on the outside of the glass or can. -Tamara |
(published on 10/22/2007)
(published on 10/22/2007)
