Forensics - Fingerprints

Forensics

http://sciencing.com/list-forensics-techniques-6392795.html

1. What is the definition of forensic science?

the application of scientific methods and techniques to matters under investigation by a court of law.

https://en.oxforddictionaries.com/definition/forensic

2. Name 5 different kinds of activities used in forensic sciences and find a picture for each.

• D.N.A
• Fingerprint 
• Footprint
• Ballistics 
• White powder test 

https://www.aafs.org/students/choosing-a-career/types-of-forensic-scientists-disciplines-of-aafs/

3. Name 5 jobs that would use forensics to investigate crime 

• Police
• F.B.I
• medical examiner 
• investigators
• laboratory analyst

Finger prints

Aim: To look at the different types of fingerprints.

Material: 

1.   Balloon
2.   Magnifying glasses 
3.   Ink pad
4.   Finger 

Steps

1. Get a balloon  
2. Ink your finger/thumb  
3.   Put your thumb on the balloon
4.    wait for balloon to dry
5.   then blow up the balloon 
6.   see if your a Loop, Whorl or Arch  

Record the types of fingerprints from those in your group.

Name	Fingerprint 1 ( Thumb)	Fingerprint 2 (finger)
Hope	Loop	Loop
Addyson	Whorl	Loop
Shontelle	Loop	Loop

Summary of findings: My friend Addyson had a whorl on her thumb but Shontelle and I had a Loop. We all had a Loop when we tried our finger.

Hidden fingerprints:

Aim: To learn how to lift hidden fingerprints from an object.

1. Lifting and Gathering fingerprints.

Equipment:

1.  Table
2.  Baby powder/Coco powder
3.  brush
4.  tape
5.  plastic
6.  finger

Method; 

1. Got baby powder
2.  Got piece of plastic
3.  made finger prints
4.  put baby powder on piece of plastic
5.  brushed some of it off
6.  took of the finger prints with sellotape

Making Sherbet

Using the following recipe you need to make sherbet.

Sherbet recipe

Recipe: 

1tsp of powdered drink crystals (eg refresh)
1/4 tsp citric acid
1/4 tsp tartaric acid
1/4 tsp -baking soda.
Put all ingredients into a zip lock bag, stir, and enjoy.

Materials:

1.  Spoon

2.  Cup/zip lock bag

3.  Raro

4.  Tactic acid

5.  Icing sugar

6.  Citric acid 

7.  Baking soda

Findings:

Sherbet
Taste	It fizzed so much in my mouth and the after taste was really poofy. You could really taste the raspberry Raro.
Colour	A bright cherry pink and it turned my mouth dark Pink

Conclusion

I really enjoyed making my Sherbet. I really want to do it again. 

What is that white powder?

Aim: To learn about the makeup of different white powders.

There are  a number of different white powders in our everyday life. Some of these are harmful and others are not. Test the four white powders listed to see which one has been found at the airport.

Here are some examples of everyday kitchen white powders.

Flour

Cornflour

Sugar

Salt

Baking Soda

Baking Powder

Icing Sugar

Tartaric Acid

Citric Acid

Gluten Free flour

Materials

1.  Black paper
2.  Magnifier glasses
3.  Sugar
4.  Salt
5.  Cornflour
6.  Baking soda


Upload a photo of each powder.

1.  Cornflour 
2.  Baking Soda
3.  Salt
4. Sugar 

On the black cardboard using a microscope you need to record what you see. You will be given a small amount of 4 white powders on your cardboard. Look at them under your microscope and record what you see. 
Do not mix the powders or taste the powders.

Findings:

	Sugar	Salt	Baking Soda	Cornflour
Appearance	it looked like it was burnt toffee.	it looked like green crumbly eggs.	It just looked like a egg because of the white out side and the orange brown in the middle.	The cornflower looked like it was really dry.
Texture	It was very crumbly, crunchy and very liquid.	very dry and crusty. it felt like dry sand.	It was really wet and it felt like it was wet sand but it was sifted.	The cornflower turned into oobleck.
Smell	All the sugar sort of smells like rotten fish.	the smell was really strong and it smelt like it was rotten.	The baking soda didn't really smell like anything.	It smelt like it was nothing.
Iodine	It turned black brown ish like toffee.	it turned into a green ish like wet sand colour.	It was a very yucky yellow green type color.	It was a very yucky colour it looked like it was actually rotten.
Water	stayed the same.	stayed the same.	stayed the same.	stayed the same.
Vinegar	stayed the same.	stayed the same.	stayed the same.	stayed the same.

Write a paragraph about your findings.

Some of the ingredients stayed the same but some of them changed specially with the Iodine.