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C.S.I.

Crime scene investigation is a science known as forensics. For every crime there is a series of evidence left behind that can lead authorities to the facts behind the incident. Skilled professionals analyze every bit of the area until they know all the details of a crime including, sometimes, who did it. Let's take a look at this fascinating job and the science behind it.
 
The word forensic comes from the Latin word forensic meaning public or to share with the public as in sharing the crime with the court system. Any science that is used for the intention of law related issues is a form of forensic science.
 


Some of the evidence that can exist at a crime scene:
  • soil
  • glass
  • plants
  • fibers
  • fingerprints
  • tire tracks
  • splatter
  • footprints
  • liquids
  • chemicals
  • handwriting
  • bullets
  • hair
  • blood
  • DNA
  • broken or bent objects
These are just a few of the things that a forensic scientist might find and study at a crime scene.
 
 
 
 
What is a DNA fingerprint?
In forensics, scientists can take a sampling from the inside of someone's cheek or their blood and compare the DNA of one sample to the DNA of another sample to be able to tell if they came from the same person. This can be very helpful in proving that a suspect is actually NOT guilty. This method of crime solving has been used regularly since 1992.
 
 
 
Ever wonder how forensic scientist create DNA fingerprints?
 

YouTube Video

 
external image dna-profiling.jpg
 
 
 
 
What is Gel Electrophoresis?  Try this virtual lab activity
 
Ready to solve some crimes?
 
 
 
 
 
 
  
 
 
 
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