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Friday, March 29, 2019

The feet can measure height

The feet can measure the height.


THE FEET CAN MEASURE THE HEIGHT


The bones of the feet can tell a lot about a person. What do feet reveal about a person's height? Forensic anthropologists team up with law enforcers to help solve crimes.
Bones of the feet can reveal an interesting fact about an individual. Let's combine math with forensics to see how.
Image result for foot chart sizeImage result for foot to height ratio chart

Aim:  To use forensic science techniques to measure the height of a criminal.

Materials:
  1. Rulers (for height and foot size in cm and metres)
  2. A marker
  3. Chromebook
  4. Whiteboard/something to measure on

Steps:

  1. Measure your height in centimetres with ruler
  2. After you measure feet in centimetres with a ruler as well
  3. Write down what you got in the chart
  4. Divide you foot size with your height then times it by 100 in one equation
  5. Write the answer down

Findings:
Name
Foot  (cm)
Height (cm)
Skyler
20
147.5
Shiela
22
158.5
Lhysette
19
143 cm
Rieya
23
147 cm


Divide the length of each person's foot by his/her height. then multiply it by 100.
Skyler = 13.5
Shiela = 13.8
Lhysette = 13.2
Rieya = 15.6





Tuesday, March 26, 2019

Forensics - Fingerprints


Forensics - Fingerprints

What is the definition of forensic science? Forensics are methods or techniques that are used to solve crimes, it's also to identify suspects and victims.

Name 5 different kinds of activities used in forensic science and find a picture of each

- Finding Fingerprints 
Image result for fingerprints types

- D.N.A
Image result for D.N.A

- Finding Footprints
Image result for footprints







- Ballistics
Image result for ballistics

- White Powder Test
Image result for white powder test

Name 5 jobs that would use forensics to investigate crime 

- Investigator
- Chemist
- Science Technician
- Photographer
- Documents Examiner

Fingerprints

Material:

  1.  Balloon
  2.  Ink Pad
  3.  Thumb and Finger
Steps:

  1.  The first thing you're going to need to do is you need to find a balloon and an ink pad.
  2.  Press your thumb onto the ink pad.
  3.  Before you put your finger on the balloon make sure it's not yet inflated then quickly put your thumb on the balloon.
  4.  Let it dry before inflating it.
  5.  While the ink is drying, you can wash your hands if you want.
  6.  After it dried, inflate the balloon, just a little bit, not too much, you'll see that the fingerprints will slowly expand. 
  7.  Do the same step with your other fingers if you want, on the other side of the balloon but make sure that the other side is completely dry.





Record the types of fingerprints from those in your group.
Name
Fingerprint 1 ( Thumb)
Fingerprint 2 (finger)
SkylerLoopIndex finger: Loop
RieyaLoopRing finger: Whorl
LhysetteLoopIndex finger: Loop




Hidden fingerprints

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

1. Lifting and Gathering fingerprints.

Equipment:
  1.  Brush  
  2.  White Powder
  3.  Magnifying Glass
  4.  Tape
  5.  Transparent Plastic Files
Method; 

1. Get a white power, brush, tape, transparent plastic files and a magnifying glass.
2. First, dip your thumb (you could also dip the brush onto the powder then brush your finger) or any finger you want on the power, remove the excess.
3. Then gently press your finger onto the plastic file.
4. Stick the tap on where your fingerprint is, you will see that the fingerprint will stick to the tape.
5. You can use the magnifying glass to look closer to the fingerprint.