Monday, May 12, 2008

CLASS RESPONSE NUMBER THREE: bubbles!!! edition

<=The fish from 'Finding Nemo' that obsesses over bubbles. A few days ago in class we did a fun but educational lab concerning bubbles. There were about 5-7 plastic bowls (that I hope were recycled:]) and contained dish soap, paint, and a little bit of water. We used straws and blew air into the straws and into a bowl with the desired colour we wanted. When we were satisfied with the bubbles we blew we rapidly took a piece of paper and pressed the bubbles onto the paper, leaving a cool mess on the paper. THE SCIENCE PART::: I researched this topic and found out the following on wikipedia. I found out that bubbles maintain a certain surface area until popped. You can find the surface area in a little bit of every space on the the bubble. Also, it is known that a bubble can survive because the surface layer of a liquid (usually water) has a certain surface tension, which causes the top layer to act like a thin elastic sheet. Surface tension is also responsible for the circle like shape the bubble takes. Furthermore, a sphere has less surface area possible for a given volume.

SOURCE:
http://en.wikipedia.org/wiki/Soap_bubble

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