Forensics C
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Re: Forensics C
have any of you any had ballistics on a test, and if you have what did they ask you/what did you need to know to answer the questions??
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Re: Forensics C
At least 20% of the test (50% here) is based on labs, they just didn't include powders?Jest wrote:My invitational was a test with all multiple choice with 3 simple math problems. Absolutely no lab stuff. Anybody else like that?
That's taking out the best aspect of the event...
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Re: Forensics C
We didn't have anything to identify(sodium acetate, sodium chloride, sodium hydrogen), no water testing, no chromatography, and no analysis of crime. They even told us we didn't need lab coats or safety goggles. Just a plain old multiple choice with 58 or so questions.jazzy009 wrote:At least 20% of the test (50% here) is based on labs, they just didn't include powders?Jest wrote:My invitational was a test with all multiple choice with 3 simple math problems. Absolutely no lab stuff. Anybody else like that?
That's taking out the best aspect of the event...
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Re: Forensics C
If you're new to the event don't expect that to be the norm for the rest of the year. I guess I can understand a shortage of some things but to not have ANY of the main components of this event...ends up being a waste of time for those who practiced and got their powders/chromatography down.Jest wrote: We didn't have anything to identify(sodium acetate, sodium chloride, sodium hydrogen), no water testing, no chromatography, and no analysis of crime. They even told us we didn't need lab coats or safety goggles. Just a plain old multiple choice with 58 or so questions.
On a side note, anyone ever gotten mass spectroscopy instead of chromatograms? Or know of a test online that has questions? I haven't checked yet.
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Re: Forensics C
Generally there isn't much on ballistics... even if there is, anything I've ever seen is mostly matching. It's good to know the basics (rifling), but beyond that, it doesn't really ever compose a large part of the test.monkeysareawesome wrote:have any of you any had ballistics on a test, and if you have what did they ask you/what did you need to know to answer the questions??
I've seen some mass spec, but it's also largely matching again. Some theory on how it works, too. Sadly, any more than that is really up for grabs for anyone...jazzy009 wrote:
On a side note, anyone ever gotten mass spectroscopy instead of chromatograms? Or know of a test online that has questions? I haven't checked yet.
Has anyone seen any good water qual this year? In Texas, the invitationals tend not to give us too much, so I'm not sure what to expect. Once again, a plea for information on a good conductivity tester? What do y'all use? Thanks.
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Re: Forensics C
I also recently experienced a test that was entirely written - no lab. Some multiple choice and results of lab given to us. Anyone else experience similar frustration?
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Re: Forensics C
pirate_capn38 wrote: Has anyone seen any good water qual this year? In Texas, the invitationals tend not to give us too much, so I'm not sure what to expect. Once again, a plea for information on a good conductivity tester? What do y'all use? Thanks.
For water quality, the Ohio invitationals so far have been mainly color matching (if you also do enviro, you know what I mean - just with iron, hardness, etc tests instead of N-P-K tests). We don't typically use a conductivity tester for our powder analysis - instead we tend to rely primarily on Flame, solubility, NaOH, and HCl tests - which between them can cover nearly all the powders.
2007(B):Solar System, Tower Building
2008(C):Food Chemistry, Rocks and Minerals, Fermi Questions, Disease Detectives (as a backup in case of conflicts)
2009:Environmental Chemistry, Forensics, Astronomy, TPS (as backup)
2010:Chem Lab, Environmental Chemistry, Forensics, Astronomy, Picture This
2008(C):Food Chemistry, Rocks and Minerals, Fermi Questions, Disease Detectives (as a backup in case of conflicts)
2009:Environmental Chemistry, Forensics, Astronomy, TPS (as backup)
2010:Chem Lab, Environmental Chemistry, Forensics, Astronomy, Picture This
Re: Forensics C
Speaking of ballistics, has anyone ever seen anything about "bullet striations" on a test that wasn't straight matching? I really don't know what (if anything) I should be looking up for that category. I know nothing about guns, so I'm thinking there's probably something haha.
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Re: Forensics C
Thank you! Texas isn't very good about giving us quality tests.sisomg11 wrote:pirate_capn38 wrote: Has anyone seen any good water qual this year? In Texas, the invitationals tend not to give us too much, so I'm not sure what to expect. Once again, a plea for information on a good conductivity tester? What do y'all use? Thanks.
For water quality, the Ohio invitationals so far have been mainly color matching (if you also do enviro, you know what I mean - just with iron, hardness, etc tests instead of N-P-K tests). We don't typically use a conductivity tester for our powder analysis - instead we tend to rely primarily on Flame, solubility, NaOH, and HCl tests - which between them can cover nearly all the powders.
Out of curiosity, has anyone timed themselves doing qual? About how long is everyone averaging per powder? (Perhaps I'm being OCD, but it's an interesting concept to try...)
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- jazzy009
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Re: Forensics C
I'm a little under 30 minutes for 8 powders. I haven't timed each powder because some take considerably less time than others.pirate_capn38 wrote:
Out of curiosity, has anyone timed themselves doing qual? About how long is everyone averaging per powder? (Perhaps I'm being OCD, but it's an interesting concept to try...)
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