Ninhydrin is specifically good for paper ... Cyanoacrylate is good for nonporous surfaces ... that's all I usually need to remember during competition. Everything else I usually answer with dusting because iodine fuming is not used very often nowadays.piimasta314 wrote:How do you know when to use a certain fingerprint test?
I know when not to use dusting, but for cyanoacrylate it can be used for lots of things...same with ninhydrin and iodine fuming. I looked up the special types of surfaces but those three can be used for nearly all surfaces.
Forensics C
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pikachu4919
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Re: Forensics C
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Nationals 2016 ~ 4th place Forensics
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piimasta314
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Re: Forensics C
Thanks so much! It'll be my first time ever at a state competition in 2 weeks. I'm really excited. Good luck everyone!
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computergeek3
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Re: Forensics C
Hey, I was looking over the rules and it said we are to know how to identify bat hair...can someone verify this for me? My partner and I are very confused over this...
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pikachu4919
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Re: Forensics C
It's basically just like identifying other types of hair ... but bat hair is obviously different from the other types of hair.computergeek3 wrote:Hey, I was looking over the rules and it said we are to know how to identify bat hair...can someone verify this for me? My partner and I are very confused over this...
Carmel HS (IN) '16
Purdue BioE '21? reevaluating my life choices
Nationals 2016 ~ 4th place Forensics
"It is important to draw wisdom from different places. If you take it from only one place, it becomes rigid and stale." -Uncle Iroh
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computergeek3
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Re: Forensics C
How would one go about obtaining bat hair? That's our biggest question as of right now.pikachu4919 wrote:It's basically just like identifying other types of hair ... but bat hair is obviously different from the other types of hair.computergeek3 wrote:Hey, I was looking over the rules and it said we are to know how to identify bat hair...can someone verify this for me? My partner and I are very confused over this...
If you can't explain it simply, you don't know it well enough. -Albert Einstein
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pikachu4919
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Re: Forensics C
Oh. I really don't know that one. Depends on the situation, I guess. Maybe something related to a crime in a cave ... lol ...computergeek3 wrote:How would one go about obtaining bat hair? That's our biggest question as of right now.pikachu4919 wrote:It's basically just like identifying other types of hair ... but bat hair is obviously different from the other types of hair.computergeek3 wrote:Hey, I was looking over the rules and it said we are to know how to identify bat hair...can someone verify this for me? My partner and I are very confused over this...
Last edited by pikachu4919 on March 25th, 2013, 7:37 pm, edited 1 time in total.
Carmel HS (IN) '16
Purdue BioE '21? reevaluating my life choices
Nationals 2016 ~ 4th place Forensics
"It is important to draw wisdom from different places. If you take it from only one place, it becomes rigid and stale." -Uncle Iroh
About me || Rate my tests!
Opinions expressed on this site are not official; the only place for official rules changes and FAQs is soinc.org.
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Purdue BioE '21? reevaluating my life choices
Nationals 2016 ~ 4th place Forensics
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cyanophycean314
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Re: Forensics C
There is a webiste linked to on soinc.org: http://sciencekit.com/science-olympiad- ... IG0054843/
It sells the chemical kits with all types of hair (including 1 bat hair), but it's rather pricy.
It sells the chemical kits with all types of hair (including 1 bat hair), but it's rather pricy.
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(Whiting Inv., Northridge Inv., Regional, State) for 2013
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Thermo (2nd, 4th, 2nd, 4th)
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piimasta314
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Re: Forensics C
Instead of going about getting expensive kits you could just search pictures on google. They're really hard to find, but all of the different hairs and fibers should have certain distinguishing characteristics that make them identifiable.computergeek3 wrote:How would one go about obtaining bat hair? That's our biggest question as of right now.pikachu4919 wrote:It's basically just like identifying other types of hair ... but bat hair is obviously different from the other types of hair.computergeek3 wrote:Hey, I was looking over the rules and it said we are to know how to identify bat hair...can someone verify this for me? My partner and I are very confused over this...
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piimasta314
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Re: Forensics C
By the way, how much of the tests are usually theory? I tried a practice test and they asked all these vocabulary questions about different types of evidence and the investigation process...
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lmatkovic3
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Re: Forensics C
None of the high-level tests should be about theory at all, maybe a question or two (but still less than 5% of the total points.)
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