Stuck in someone else's frames? break free!
will teach us a way to "make" a liquid. We Can use a jar or
drinking glass, some water, ink, or food coloring, ice cubes, and a small
plate or tray on which to
Fill the glass or jar with water, add ink or food coloring, and a few ice cubes. Place it onto a tray, and leave it on the countertop.
Look at it after a half-hour, and you will see that drops of water have formed on the outside of the glass. Did that water leak through the glass? No. Look at the color of it. It is colorless, just like water. It can't be coming from inside the glass.
Is the level of water in the glass any lower than it was when it was filled? No. This moisture comes from the air in the room. This air is warmer than the surface of the glass, because the ice inside cools the surface of the glass. This process is called condensation, (pronounced "con-den-SAY-shun").
On a cold day, have you ever breathed on the inside of a window, and it made sort of a cloud on the window? That is condensation, also.
People who wear glasses will sometimes breathe onto their glasses, then wipe them with a cloth, to clean them. The moisture that helps clean the glass is condensation.
Any problems with this page? Send URL to webmaster. Thank you!
We publish two newsletters a couple of times a month. To subscribe, send a blank email to the appropriate email address. Topica will send you a message asking if you really intended to subscribe - just click reply - that's it!
Free Recipe Collection Newsletter:
Jewish Recipe Collection Newsletter:
Tired of Geek Speak when