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We made a test batch in a large aquarium tank about 8" deep and left it overnight to see if we could re-use it the next day. The issue wasn't evaporation, as much as separation. By morning, the Oobleck had separated dramatically, with about 1" of just water on top and the cornstarch packed densely below. Re-mixing it proved impossible.
--Jeff--
Jeff Rosenblatt
Director, Science City
Union Station Kansas City, Inc.
30 W. Pershing Rd. Suite 850
Kansas City, MO 64108
Office: 816-460-2218
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-----Original Message-----
From: Informal Science Education Network [mailto:[log in to unmask]] On Behalf Of Fournier, Kathy
Sent: Friday, July 15, 2011 12:08 PM
To: [log in to unmask]
Subject: Re: oobleck run through
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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So another question regarding our oobleck walk.....how well will that large of amount of oobleck stay if we make it the night before our event? I am assuming that if dried out at all we could just add some water to get it back to right consistency. Anyone have experience with this?
Kathy Fournier
Associate Vice President of Education
McWane Science Center
200 19th Street North
Birmingham, AL 35203
205-714-8254
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-----Original Message-----
From: Informal Science Education Network [mailto:[log in to unmask]] On Behalf Of Jonah Cohen
Sent: Wednesday, July 13, 2011 11:45 AM
To: [log in to unmask]
Subject: Re: oobleck run through
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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Sounds awesome, Joe! But, uh.... how did you clean up/dispose of all that obbleck?
Jonah Cohen
Outreach & Public Programs Manager
The Children's Museum
"Discontent is the first necessity of progress."
-Thomas Edison
-----Original Message-----
Hello Kathy,
We did an oobleck run last year with a trough that was 1 foot deep and 8 feet in diameter. The distance across was about right for the folks who moved quickly. For those who hesitated, the large diameter meant that our rescue crew had to step in quickly or risk losing people. Don't do more than 1foot deep. Don't.
The math yields ~50 cubic feet, or a bit less than 2 cubic yards, which we achieved with 2000lbs--40 bags--of cornstarch.
Joe
Joe Hastings
Executive Director
Don Harrington Discovery Center
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