Transcript Stop your Crying

Stop your Crying
Ian Stephens
Introduction
• Do you cry when you cut onions? Well if
you do I have a solution. Now you don’t
have to cry anymore when you are
cooking!
Problem
• What can you do when you are cutting
onions.
Background info.
• When you cut an onion you break cells.
You release amino acid sulforides which
forms sulfuric acids. This produces
propanethinied s-oxide it goes towards
your eyes and reacts with the water in
your eyes. You create tears to get rid of
the irritated feeling. You can start crying
just 30 seconds after you make the first
cut.
Hypothesis
• I think that when you chill the onion you
will not cry.
What I am testing
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I have 4 things to test
Hang a piece of bread out of your mouth
Chew 2 toothpicks
Chill the onion
Chew mint gum
Materials
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Onions
Knife
Toothpicks
Gum
Bread
Freezer
Procedure
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Gather all materials
Ask teachers how not to cry while cutting
an onion.
Cut 2 onions. (in halves)
See which method works best
Tell how much my eyes hurt on a scale of
1 to 10
Variables
• Independent - ways not to cry when you
cut an onion
• Dependant- whether you cry or not
• Controlled- The amount of onion you cut
Results
• I scaled it on a scale of 1 to 10
• 1 not crying at all 10 hurting a lot
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Bread 8
Gum 4
Chilling 6
Toothpick 9
Conclusion
• Chewing gum worked the best because if
you want to chill the onion you are going
have to chill it for a long time and I was
wrong. The toothpicks and bread did
nothing to stop you crying.
Time spent
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20 minutes
1.45 min
1.45 min
45 min
50 min
45min
Acknowledgements
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Mrs. Riffle
Mrs. Schechter
Mrs. Ball
Mom
Sources
• "why do onions make us cry." yahoo.anwsers. Web. 16
June 2010.
<http://answers.yahoo.com/question/index?qid=1005110
700006>.
• "Why Do Onions Make You Cry?." About.com. Web. 16
Nov. 2010.
<http://chemistry.about.com/od/chemistryfaqs/f/onionscry
.htm>.
• "Mental_floss Blog » Why Do Onions Make You Cry?"
Web. 19 Jan. 2011.
<http://blogs.static.mentalfloss.com/blogs/archives/2220
2.html>.