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Date: | Thu, 8 Mar 2007 11:49:56 -0500 |
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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
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Check it out! Take a different size cookie sheet or other oject that makes
a higher or lower sound and wack it (all other variables constant) and see
if the lines are still there, or closer or further apart...etc. This is a
perfect set up for a fun experiment.
Informal Science Education Network <[log in to unmask]>
writes:
>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related
>institutions.
>*****************************************************************************
>
>
>In an attempt to show that sound vibrations can move objects, I put a bit
> of
>salt and pepper on a piece of plastic wrap which was stretched tight
>over
>the top of an aluminum can. I then held a metal cookie sheet a few
>inches
>above the wrap, and whacked it with a metal spoon. Indeed, the salt and
>pepper
>jumped!
>
>I then continued to whack the cookie sheet ten more times, and the salt
>and
>pepper started to line up in rows! When I was done, I had three or four
>neat
>lines of salt and pepper on my plastic wrap.
>
>Were the salt and pepper bits lining up based on the frequency of the
>vibrations I was creating? Or was something else going on?
>
>Thanks so very much!
>
>Lisa
>
>
>
>Lisa Jo Rudy, Writer/Consultant
>625 Chelten Hills Drive
>Elkins Park, PA 19027
>_www.lisarudy.com_ (http://www.lisarudy.com/)
>215-635-9735
>
>
>_About Guide to Autism_ (http://www.autism.about.com/)
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Deborah Massey
Head of School and Teacher Programs
Rochester Museum & Science Center
657 East Avenue
Rochester, New York 14607-2177
(585) 271-4320, ext. 521
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More information about the Informal Science Education Network and the
Association of Science-Technology Centers may be found at http://www.astc.org.
The ISEN-ASTC-L email list is powered by LISTSERVR software from L-Soft. To learn more, visit
http://www.lsoft.com/LISTSERV-powered.html.
To remove your e-mail address from the ISEN-ASTC-L list, send the
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