Cloud in a Bottle
Fri, Apr 1, 2011
Materials: 2L bottle, rubbing alcohol, cork, bike pump
Activity: Pour a small amount of rubbing alcohol in a large plastic bottle. Use a bicycle pump to add air pressure to the bottle. Add a cork to the bottle, and stick the needle through the cork, so the air will not leak out. Release the cork. A cloud should form in the bottle! Increase air pressure and the cloud should dissipate.
Research Question: How does the amount of pressure affect presence of a cloud? How does addition of rubbing alcohol affect the cloud?
Resources:
Steve Spangler's Cloud in a Bottle.
LISD Parents as Teachers Program, Jan 2011