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Re: Buoyancy
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Informal Science Education Network <[log in to unmask]>
Date:
Mon, 2 Apr 2007 14:42:21 -0400
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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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You might find it interesting to check out the chapter in Piaget's classic "Children's Conceptions of the World" on floaters and sinkers, looking at how children's conceptions of why things float and sink change as they develop.  
 
Bob Russell
Learning Experience Design
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-----Original Message-----
From: [log in to unmask]
To: [log in to unmask]
Sent: Mon, 2 Apr 2007 1:29 PM
Subject: Buoyancy


ISEN-ASTC-L is a service of the Association of Science-Technology Centers 
Incorporated, a worldwide network of science museums and related institutions. 
***************************************************************************** 
 
I'm thinking of a simple buoyancy demo that could usefully employ a 6x6x3" of wood. Pieces that size are typically 5.5x5.5xX*. Also they tend to split if left to dry. Any ideas on a substitute? I want something that sinks reasonably into the water, maybe 1/2 the depth. I'm also looking for a 40-50 quart plastic container that is fairly transparent. I've seen a few in a local h/w store, but they might have a transparency of 50%. 
 
* I want to keep the dimesnions some reasonable fraction of a cubic foot. 
--  
  Wayne Watson (Watson Adventures, Prop., Nevada City, CA) 
 
  (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) 
  Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet 
 
  Frank and Ernest cartoon: Frank says, "Ther're two   American holidays honoring the military, one in May,   and one in November." Ernest,"You'd think at least   there would be one in March?" 
 
  Web Page: <www.speckledwithstars.net/> 
 
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