Crime Busters B
-
- Member
- Posts: 4
- Joined: January 2nd, 2018, 6:06 pm
- Division: B
- State: CA
- Has thanked: 0
- Been thanked: 0
- WhatScience?
- Member
- Posts: 395
- Joined: July 16th, 2017, 4:03 pm
- Division: C
- State: NJ
- Has thanked: 0
- Been thanked: 0
Re: Conductivity meter
Ask your science teacher....I couldn't find a good one for a reasonable price...my teacher had a bunch in her closetknowthewrightstuff wrote:Does anyone know of a good conductivity meter that is allowed for Crime Busters?
You ever use the things with the 9 volt and the 2 wires that make a sound???
-
- Member
- Posts: 96
- Joined: October 22nd, 2017, 9:33 am
- Division: C
- State: CA
- Pronouns: She/Her/Hers
- Has thanked: 4 times
- Been thanked: 18 times
Re: Crime Busters B
Under the rules, it says you have to know the difference between plant, animal, and synthetic fibers. Do you have to be able to identify the specific type, like wool, silk, or rayon? Or is knowing whether it's animal, plant, or synthetic good enough?
I like birds.
-
- Member
- Posts: 438
- Joined: October 9th, 2017, 6:25 pm
- Division: C
- State: NJ
- Has thanked: 1 time
- Been thanked: 0
Re: Crime Busters B
u only need animal plant and synthetic. Some competitions, they have asked for specific, so its good to know, but u really only need animal plant synthetic.
- Tailsfan101
- Member
- Posts: 829
- Joined: April 14th, 2017, 4:33 pm
- Division: Grad
- State: ID
- Has thanked: 130 times
- Been thanked: 117 times
- Contact:
Re: Crime Busters B
The rules specify that the Crime Busters competitors need only to identify between synthetic, animal, and vegetable fibers. I believe that Forensics has their competitors identify the specific fiber, but this is not the same in Crime Busters.Birdmusic wrote:Under the rules, it says you have to know the difference between plant, animal, and synthetic fibers. Do you have to be able to identify the specific type, like wool, silk, or rayon? Or is knowing whether it's animal, plant, or synthetic good enough?
"Blessed are you when people insult you and persecute you, and falsely say all kinds of evil against you because of Me. Rejoice and be glad, for your reward in heaven is great; for in the same way they persecuted the prophets who were before you." Matthew 5:11-12
I have no regrets.
I have no regrets.
-
- Member
- Posts: 96
- Joined: October 22nd, 2017, 9:33 am
- Division: C
- State: CA
- Pronouns: She/Her/Hers
- Has thanked: 4 times
- Been thanked: 18 times
Re: Crime Busters B
Thank you!Tailsfan101 wrote:The rules specify that the Crime Busters competitors need only to identify between synthetic, animal, and vegetable fibers. I believe that Forensics has their competitors identify the specific fiber, but this is not the same in Crime Busters.Birdmusic wrote:Under the rules, it says you have to know the difference between plant, animal, and synthetic fibers. Do you have to be able to identify the specific type, like wool, silk, or rayon? Or is knowing whether it's animal, plant, or synthetic good enough?
I like birds.
Re: Crime Busters B
In the rules this year, it says that you don't need to know specifics. However, I do know that last year, many invitationals I saw tests for had sometimes asked for specifics, while others just asked for the general type. I feel that it all depends on the type of test proctor you get. Since not all of them follow the rules word for word, I suggest knowing the difference between specific fibers (nylon, polyester, cotton, linen, wool, silk) just in case, however, it really shouldn't be necessary if the test proctors follow the rules.Birdmusic wrote:Thank you!Tailsfan101 wrote:The rules specify that the Crime Busters competitors need only to identify between synthetic, animal, and vegetable fibers. I believe that Forensics has their competitors identify the specific fiber, but this is not the same in Crime Busters.Birdmusic wrote:Under the rules, it says you have to know the difference between plant, animal, and synthetic fibers. Do you have to be able to identify the specific type, like wool, silk, or rayon? Or is knowing whether it's animal, plant, or synthetic good enough?
Re: Crime Busters B
My team is having trouble identifying the difference between Aluminum, Zinc and Tin. We do notice some fizz with Tin. However, hard to differentiate between Aluminum & Tin. Theoretically, Aluminum is supposed to have a delayed reaction with HCl but we could hardly notice any fizz even after long time. Only way to tell is based on shine but its very hard for kids to notice and depends on the sample. Any suggestions?
-
- Member
- Posts: 438
- Joined: October 9th, 2017, 6:25 pm
- Division: C
- State: NJ
- Has thanked: 1 time
- Been thanked: 0
Re: Crime Busters B
Between aluminum and tin, it is generally fairly simple to recognize the distinctive yellowish tinge that tin possesses.
Who is online
Users browsing this forum: No registered users and 1 guest