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Subject:	Re: Sediment Model
From:	Paul Orselli <[log in to unmask]>
Reply To:	Informal Science Education Network <[log in to unmask]>
Date:	Mon, 18 Aug 2008 18:49:23 -0400
Content-Type:	text/plain
Parts/Attachments:	text/plain (57 lines)

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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Hi Mike,

I might suggest you use a "Sedimentator" from Acorn Naturalists as a model:
<http://www.acornnaturalists.com/store/SEDIMENTATOR-P3424C335.aspx>

It's a sealed tube filled with water (and gravel, two colors of sand,
peat, and clay/silt)

It works really well mounted to a vertical turntable or bearing.  If
you need a bigger tube, you could just purchase several sedimentators
and pour the contents into your larger tube.

Happy layering!

--------------------------------------------------

Paul Orselli, President and Chief Instigator

Paul Orselli Workshop (POW!)
1684 Victoria Street
Baldwin, NY 11510

FREE museum exhibit design resources:
<http://www.orselli.net>

(516) 223-1043 voice
(516) 238-2797 mobile

Exhibit tips, tricks, and news at the ExhibiTricks blog!
<http://blog.orselli.net>

On Mon, Aug 18, 2008 at 6:04 PM, Mike Levad <[log in to unmask]> wrote:

> We are building a sediment model which consists of a tube with a clear fluid
> in it and different sized particles. When you turn it over the bigger stuff
> hits the bottom first and the little stuff stays on top.  I have seen this
> in a few different places.  Is anybody willing to share what works best for
> the clear fluid and the sediment particles?

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