Forensics
What is forensic science?
Using scientific methods and techniques to solve crimes
What is DNA?
A biological (part of a living thing) sample that is unique to every living thing.
What are the 3 fingerprint patterns?
Loop, Whorl, Arch
____ can prevent contamination of evidence collection.
Gloves
Person who may have committed crime
The suspect
Which of the following would not contain DNA: skin, hair, thread
thread
What makes fingerprints more unique?
minutiae
Is eyewitness testimony reliable?
NO
What does a field scientist do?
Collect evidence/present at the actual scene
True or false: DNA can ALWAYS be found in hair samples.
False
What is one way to collect fingerprints?
Powder and tape, chemicals and light.
Name 3 categories of evidence.
Physical: Weapons, tool marks, broken items
Biological
Trace
Impression
Digital
Document
Demonstrative
Testimonial
What type of evidence is blood?
Physical, DNA evidence
How do forensic scientists stop their own DNA from contaminating the scene?
Wear PPE (gloves, bunny suits, masks, goggles, etc.)
True or False: Cuts and burns alter a persons finger prints
What is rigor mortis?
Stiffness of the body in the first 24 hours after death
Name a search technique that can be used to search a crime scene?
Spiral, Zone, Grid
Explain why DNA evidence was not used to catch Jack the Ripper (serial killer in 1888).
The forensic science of matching DNA hadn't been discovered yet
What are the 3 types of fingerprints found at a crime scene? (NOT the patterns)
latent, visible, and plastic
How is entomology used in forensic science?
Studying insect behaviour can give the time of death.