CSI - Mrs. Cagle's GT Class

Forensic Facts

The word ‘Forensics’ has been derived from the Latin term ‘forensis’ that means public. It comes from the word ‘forum’. Forensic science uses various sciences to solve complex legal situations. It is generally used to solve criminal matters with the help of samples. These samples can include anything like hairs, fingerprints, blood stains etc.

Forensics is also known as CSI. CSI stands for Crime Scene Investigation.
The duration of getting a forensics test done can vary. It depends on the type of test that has to be taken. Some tests get completed in an hour, some take a day or two and some of them can even take a month.
If the scientists have to determine the time of death they will examine insects found in and around the human remains.
Tech savvy scientists can find the evidence that has been deleted from a computer because deleted files of a computer are not actually deleted. They are just hidden.
Dental records also prove of a great help because they are among the sturdiest parts of human body.
Unlike what is shown in movies and TV shows, fingerprinting is not a full proof method. Sometimes, it becomes difficult or almost impossible for experts to match these fingerprints.
DNA test method is more accurate as compared to other methods.
Hair roots can help scientist to determine the gender.
Bugs and maggots are used to determine the time of death.

One of the most interesting real-world uses of science is forensic science, solving crimes and catching thieves. We cover 5 simple forensics science experiments that can be done with things commonly found around the house, including fingerprint analysis, ink chromatography, DNA analysis, and a flame test.

Hair and Fiber Evidence

Forensic Anthropology

Click on the hidden clues in the picture on this site to learn more about Bodies and Bones!

The Why Files: Bodies and Bones

Impression Evidence

Fingerprints

How does a CSI exam a crime scene for fingerprints?

CSIs have a number of different specialist powders and brushes available to give us the best chance of finding fingerprints in a crime scene. Once a fingerprint is located, the CSI may photograph the fingerprint or more than likely recovery the print by using adhesive tapes and acetate sheeting. They will ensure that each recovered lift is of an appropriate standard so it can be used and will endorse each fingerprint ‘lift’ with a unique reference number.

Ridge Detail at a Crime Scene

Good article on fingerprint identification