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Thread: school project
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15-02-2008, 04:30 AM #1
school project
Greetings,
My ten year old came home today with a project assignment to keep a milk carton filled with water frozen in the classroom all week long. The only rule is that they cannot use a cooler such like a styrofoam container, or a refrigerator. Does anyone in the RE community have any great ideas? Remember, this is a ten year old. This is actually a really interesting project and I'm curious to see what different, relatively simple proposals people come up with.
Thanks,
natty
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15-02-2008, 07:26 AM #2
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15-02-2008, 09:42 AM #3
Re: school project
I used to do something similar (but with meat) on sailing holidays.
Just wrap a block of dry ice in newspaper (several layers required. Then wrap a block of frozen water to it with more layers of newspaper and put the whole package in a plastic bag.
That used to keep my meat frozen for a fortnight..
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15-02-2008, 09:47 AM #4
Re: school project
Some sort of 'Thermos' flask?
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15-02-2008, 03:48 PM #5
Re: school project
Dry Ice would be a good bet but be aware. Handling dry Ice can cause frost burns, We are talking 10yr olds here. The facination with the "Fog" coming off of dry Ice is almost irresistable. Also as dry ice gasses off to CO2 it will replace the air in a closed space. I have this problem in research labs where they unpack samples in a small ante-room with no ventilation. All the disclaimers being said if you could find someone with acces to an Ultra-low freezer you could start out your ice block @ -112F or so and then pack it in dry ice. Make sure you have either welders gloves or very thick gloves of some type to handle it. and make the teacher aware of the hazards. I see that you are in Medicine if you work in a Hospital see if the Lab or bloodbank will let you freeze down a carton of water in their -40 or -80 freezer. Don't fill the carton more than halfway if you do.
Last edited by lsmith3023; 15-02-2008 at 03:53 PM. Reason: additional info
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15-02-2008, 04:10 PM #6
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Re: school project
What is goal of that project? Do they have some guidance on that. If their goal is to involve parents in contributing to solution of projects of their kids, they certainly needed to inform you and guide you somehow.
What is benefit if you make solution for your kid if it is intended that he/she get to solution by on his own? Isn't that counterproductive?
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15-02-2008, 07:01 PM #7
Re: school project
a vacuum flask
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16-02-2008, 12:11 AM #8
Re: school project
Whats your ambient temp where you are at the moment?
Why not sabotage the heating in the school and it will stay frozen until a heating engineer comes (which will probably be about 2 weeks...lol)
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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16-02-2008, 01:21 AM #9
Re: school project
Is it a latral thinking excersise?
I can't think of a way to keep water frozen for 5 days without some serious assistance. If a ten year old was able to think of a solution then my bets are on him / her becoming another Einstein.
My solution would be to take the carton of frozen water to school each morning and take it back home each night to be refrozen down to temp.
taz.
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16-02-2008, 11:50 AM #10
Re: school project
Hi Natty, Have a look at this
http://www.geocities.com/shishusansar/science/ice.htm
Regards NormMy wife used to say you never listen to a word I say at least I think that what she said
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16-02-2008, 02:03 PM #11
Re: school project
Its a good site and quite informative.
The point is though how could a child keep water
frozen in a class for a week.
You need to think about the caperbilities of a child.
Where would a child or children get the quanties of ice and salt from to create a refrigeration effect.
taz
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16-02-2008, 02:08 PM #12
Re: school project
I think there is more to this post than it would seem.
The only person who is not contributing is the person who raised the question.
Without using an insulated box or a refrigerator how would a teacher expect ten year olds to keep ice frozen for a week?
I've got the equipment to put the milk container in a clear pastic vacume chamber but would a child be able to do that.
I'm a little bit older than ten and I don't know the answer.
tazLast edited by taz24; 16-02-2008 at 02:11 PM.
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16-02-2008, 03:06 PM #13
Re: school project
That's what I was thinking, if its for a Ten year old then I'm guessing its more a theoretical problem rather than a practical one - and at Ten years old maybe learning about Vacuum would be the solution?
hence why I suggested a vacuum flask
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16-02-2008, 05:27 PM #14
Re: school project
.
It's this Guy's first post.
I think he's having a laugh.
Check the date....... oops - about 6 weeks to go......
.
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16-02-2008, 07:35 PM #15
Re: school project
Check this out and notice near the end the frost on the bottle. Put milk carton nere bottle.
http://www.youtube.com/watch?v=74OrC57hFaM
Jon
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16-02-2008, 07:58 PM #16
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16-02-2008, 08:38 PM #17
Re: school project
Guys, he only posted yesterday.
The question is a little too much for a ten year old though.
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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17-02-2008, 12:37 AM #18
Re: school project
Well i would do what Frederic Tudor did. I would make a small ice house, that is i would get a cardboard box and place the milk carton inside and fill the box with saw dust with at least 5" completely around the milk carton ( top, bottom and sides)and seal it with tape
Taz, "The only rule is that they cannot use a cooler such like a styrofoam container, or a refrigerator". You are stipulating your own conditions into the problemLast edited by wambat; 17-02-2008 at 12:41 AM.
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