Forensic study guide Flashcards
What to do when doing a crime scene
contaminate the scene
Take a picture before you touch or move anything
Make observations and write down your inital thoughts
Carefully collect all evidence
A fingerprint left behind on a surface
latent print
Finger prints are made of
oil and sweat
3 finger prints
arch loop whorl
Whorl
Ridges form circular pattern
1 core 2 deltas
30% of prints are whorls
Arch
Ridges start at one side end at opposite
No core or delta
5% of prints
Loop
Ridges form a loop patter starts at one side ends at same side
1 core and delta
65%
types of arch
plain tented
types of loop
Radial Ulnar
types of whorls
plain central pocket double loop accidentical
Radial loops which direction
opens towards the pinky and points at the thumb
Ulnar loop direction
opens towards the thumb points to pinky
prints are revealing by
types of dusting powder than lifted with tap
What does AFIS stand for
Auto mated Fingerprint Identification system
Identify Core