Forensics C

Test your knowledge of various Science Olympiad events.
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Magikarpmaster629
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Forensics C

Postby Magikarpmaster629 » September 13th, 2016, 2:24 pm

ID these fibers
1.[img]http://3.bp.blogspot.com/-LpG5mC4ote0/UDPKgnpUshI/AAAAAAAAAto/I-qlTVQ7hms/s1600/File09-3.gif[/img] 2.[img]http://www.swicofil.com/images/cotton_microscopic.jpg[/img] 3.[img]http://www.e-text-textiles.lv/wp-content/uploads/2014/10/dacronpolyesterpositive.jpg[/img]
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Re: Forensics C

Postby Magikarpmaster629 » October 15th, 2016, 3:01 pm

So is there anyone doing Forensics who would be interested in reviving this thread?
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Re: Forensics C

Postby daydreamer0023 » October 15th, 2016, 7:31 pm

I'll give it a shot, I guess.
Silk, Cotton, Polyester in that order
"I am among those who think that science has great beauty. A scientist in his laboratory is not only a technician: he is also a child placed before natural phenomena which impress him like a fairy tale." - Marie Curie

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Re: Forensics C

Postby Magikarpmaster629 » October 16th, 2016, 5:22 am

I'll give it a shot, I guess.
Silk, Cotton, Polyester in that order
Yeah, I think that's right. I don't quite remember. Anyway, your turn!
Ladue Science Olympiad (2014ish-2017)

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A man passes through this world, leaving behind a name.

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Re: Forensics C

Postby sciduck » November 13th, 2016, 8:14 am

So is there anyone doing Forensics who would be interested in reviving this thread?
We should try again.

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Re: Forensics C

Postby Magikarpmaster629 » November 13th, 2016, 9:36 am

Okay:

How many ridges are on an adult human finger?

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Re: Forensics C

Postby sciduck » November 13th, 2016, 5:06 pm

Okay:

How many ridges are on an adult human finger?
uhhh
I feel like it would vary greatly but I think an old test said the answer was 150 or something. (Maybe 125?)

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Re: Forensics C

Postby Magikarpmaster629 » November 14th, 2016, 1:27 pm

Okay:

How many ridges are on an adult human finger?
uhhh
I feel like it would vary greatly but I think an old test said the answer was 150 or something. (Maybe 125?)
Yep, 150

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Re: Forensics C

Postby sciduck » November 15th, 2016, 6:44 pm

What chemical is used to stop the heart in a lethal injection?

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Re: Forensics C

Postby pikachu4919 » November 15th, 2016, 7:12 pm

What chemical is used to stop the heart in a lethal injection?
Do alumni still count..?
KCl

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Re: Forensics C

Postby sciduck » November 15th, 2016, 8:14 pm

What chemical is used to stop the heart in a lethal injection?
Do alumni still count..?
KCl
I don't see why not. That's right, your turn.

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Re: Forensics C

Postby pikachu4919 » November 16th, 2016, 2:00 am

Based on this mass spec:

Image

1. Mass of most abundant component in this substance
2. Mass of the substance
3. Why are several short peaks present around each larger one?

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Re: Forensics C

Postby sciduck » November 17th, 2016, 11:26 am

Based on this mass spec:

Image

1. Mass of most abundant component in this substance
2. Mass of the substance
3. Why are several short peaks present around each larger one?
-
1. ~84 2. ~163 3. Isotopes?

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Re: Forensics C

Postby pikachu4919 » November 17th, 2016, 9:28 pm

-
1. ~84 2. ~163 3. Isotopes?
Yep! Your turn! ;)

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Re: Forensics C

Postby sciduck » November 18th, 2016, 3:31 pm

What are the burn test results for polystyrene?


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