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Showing posts with label Footprints. Show all posts
Showing posts with label Footprints. Show all posts

Friday, May 31, 2019

Forgery


Image result for forgery

Graphologists are forensic experts who look at handwriting.

Many things can be forged: art works, money, writing, etc

Aim: To Analyse a signature using forensic science.

Image result for forgery

Material:



A pen / pencil
Tracing Paper
Writing paper
A ruler

Steps:
A. Top Of Letter Analysis

1. Sign your name on a sheet of writing paper and get someone else to try to copy it.
2. Place the tracing paper over both signatures and make a dot at the top point of each letter – for both signatures.
3. Join up the dots for both signatures to get two zigzag lines across the signatures. Are the lines the same?

B. Bottom of Letter Analysis

1. Put some fresh tracing paper over both signatures.
2. Put a dot at the bottom of each letter.
3. Join up the dots to make zig zag lines. Are the lines the same?

C. Slant Analysis

1. Put a fresh piece of tracing paper over both signatures.
2. Mark a vertical line down through the middle of each letter (using a ruler), slanting it in the same direction as
the letter.
3. Compare the set of lines for both signatures.
What do they tell you.

Findings:



Analyzing 
You
Friend
Top Letter Analysis
Are the lines the same?
The tops of these letters were not the same as mine  -  E,P,other E,T,O and the NNo the top letters aren't the same but are pretty close.
Bottom Letter Analysis
Are the lines the same?
The bottom of these letters were not the same as mine
- E,P,other E,T,O and the N
No the bottom letters aren't the same but are pretty close
Slant Analysis
What are the slants telling you?
The letters that were not the same as mine are
- S,T,E,P,T,O, and the N
No the letters aren't the same but 3 letter were the same
- M,L and the letter E 

Write up the findings based on the following questions.
For the top and bottom letters my friend Hope did pretty well. For the top letters Hope got 6 letters incorrect which was E,P, the other E,T,O and the letter N. 
For the bottom letters Hope got 6 letters incorrect which was E,P, the other E,T,O and the letter N. For the slant analysis letters Hope got 7 letters incorrect which was S,T,E,P,O and the letter N. But for the slant analysis letters Hope got 3 letter correct which was M,L and the letter E.


  Writing analysis of a friends forgery.
     


The size of the letters – all big, all small, mixed?

Where they dot the ’ i ‘– over the top or off to the left or off to the right, or not at
all

How they cross their t – straight, angled up or down, where on the t stroke it
is crossed

The slant of the letters (use a ruler) – forward, backward, upright, mixed

Are there breaks in words, or are all the letters in the words joined up

The length of stalks on y, q, p, below the lines – long or short


Tuesday, March 26, 2019

Forensics

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Forensics

1. What is the definition of forensic science?
The application of scientific methods and techniques to matters under investigation by a court of law.

2. Name 5 different kinds of activities used in forensic sciences and find a picture for each.
  • Fingerprints
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  • Footprints
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  • D.N.A
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  • Ballistics 
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  • White powder tests 
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3. Name 5 jobs that would use forensics to investigate crime 
  • FBI
  • The police 
  • Medical Examiner 
  • Crime scene investigator
  • Crime laboratory analyst    




Finger prints

Aim: To look at the different types of fingerprints.

Material: 
  1. Finger  
  2. Ink/Ink pad  
  3. Magnifying glass 
  4. Balloon

Steps
  1. The teacher gave my group a balloon.
  2. Then we all went up and inked our thumb/finger.
  3. Then remove the ink from our thumb/finger the the balloon.
  4. Then you wait for the ink to dry.
  5.  Then you blow up the balloon.   
  6.  Then you check to see what pattern your thump/finger is (Arch, Loop or Whorl.)

Image result for fingerprint types






Recording:
Name
Fingerprint 1 ( Thumb)
Fingerprint 2 (finger)
ShontelleLoopLoop
AddysonWhorl Loop
Hope LoopLoop


Summary of findings:
Our thumb:  My friend Addyson had a whorl on her thumb but me and my friend Hope had a loop on our thumb.

Our fingers: My friends Addyson and Hope had a loop on their finger and I also had a loop on my finger.


Hidden fingerprints:

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

1. Lifting and Gathering fingerprints.

Equipment:
  1. Table  
  2. Plastic paper file  
  3. Baby powder/Coca powder 
  4.  Brush
  5. Tape
  6. Fingers
  7. I-pad 
Method:

  1. As a group we went up front a got some baby powder. 
  2. Then the teacher gave us a plastic paper file.
  3. Well the plastic paper file was in our hands, we made fingerprints. 
  4. Then we used baby powder and then brushed it around with a brush.
  5.  As we were brushing baby powder around on the plastic paper file, we found the hidden fingerprints.
  6. Then we got a piece of tape and then put it on the fingerprints that became exposed.
  7. After all that we took 2 photos.