UPennGrad
Posts: 1
Joined: Mon May 05, 2014 4:08 pm
Occupation: Student 5th grade

Need help with HYPOTHESIS

Postby UPennGrad » Mon May 05, 2014 4:24 pm

Hi-

My daughter is doing her Science Fair Project on which bubbles last the longest before they pop when made with:

Detergent ONLY
Detergent + Glycerin
Detergent + Light Corn Syrup

We are having a hard time coming up with the Hypothesis. I know that it is written with "IF as the first word in the statement and "THEN" in the middle of the statement...

Thanks so much!
KJB in NYC

khufker
Former Expert
Posts: 20
Joined: Sun Jan 05, 2014 1:08 pm
Occupation: Student: 12th grade

Re: Need help with HYPOTHESIS

Postby khufker » Wed May 07, 2014 4:49 pm

Hi,
Is this the project you are doing http://www.sciencebuddies.org/science-fair-projects/project_ideas/Chem_p025.shtml#summary? It looks like a fun one!
You might of seen this, but here is some more general information about forming a hypothesis http://www.sciencebuddies.org/science-fair-projects/project_hypothesis.shtml#keyinfo.
You are correct in that it should be worded if (followed by one case of your independent variable, in your case, one type of bubble solution), then (some thing to do with your dependent variable, in your case, likely about how long the bubble lasts). You and your daughter will have to do a little background research on her topic to figure out exactly what you want to plug in. :)
Good luck and let me know if you have any more questions.
Katie

Schmetterling14
Posts: 13
Joined: Sat May 24, 2014 9:05 am
Occupation: Student: College Senior and CPhT

Re: Need help with HYPOTHESIS

Postby Schmetterling14 » Sat May 24, 2014 9:26 am

HI,
I would have your daughter use Detergent only bubbles be her control group since there are no additives. So I would say something like " If bubbles using Detergent only take X-seconds to pop then bubbles that are made with Detergent and an additive should last longer/ last not as long ( that part you and your daughter can decide which to use)". Make sure she uses a three column table and at least 5-10 rows so that you can keep track of how long the bubbles last and have a decent little sample size.
Best of luck and please let me know if there's anything else I can help with.

Steph from OR

connief
Former Expert
Posts: 302
Joined: Thu Apr 04, 2013 12:27 pm
Occupation: Graduate Student

Re: Need help with HYPOTHESIS

Postby connief » Sat May 31, 2014 7:27 pm

Hello there,

To add on to the excellent advice that has already been given by the other experts, another thing to think about is why glycerin and light corn syrup is tested. Is it known how adding glycerin and corn syrup to detergent changes the solution? Doing a bit of research on these aspects may give you some background information to provide reasons for why you hypothesized what you did. In other words, if you predict that the bubbles will last longer or last shorter, why do you hypothesize that based on what is known about solutions of detergent + glycerin or + corn syrup?

Connie

Nanyi_09
Posts: 2
Joined: Tue Jun 03, 2014 10:44 pm
Occupation: Businessman

Re: Need help with HYPOTHESIS

Postby Nanyi_09 » Tue Jun 03, 2014 10:51 pm

thanks for post.


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