FORENSICS UNIT 2
DACTYLOSCOPY - correct answer-the study of fingerprints
what kind of evidence are fingerprints? - correct answer-individual
During what growth stage are fingerprints formed? - correct answer-in the womb (10.5
weeks)
do fingerprints change with age? - correct answer-no
Do any people have the same fingerprints? - correct answer-no
What is AFIS? - correct answer-computerized system for storing and retrieving fingerprint
records (AUTOMATIVE FINGERPRINT IDENTIFICATION SYSTEM)
How many ridge characteristics needed for a match at the crime scene? - correct
answer-7-10 to 10-12 (the more the better)
plastic fingerprints - correct answer-indentations left in soft materials such as clay or wax
patent fingerprint - correct answer-a visible fingerprint that happens when fingers with blood,
ink, or some other substance on them touch a surface and transfer the pattern of their
fingerprint to that surface
latent fingerprint - correct answer-a hidden fingerprint made visible through the use of
powders or other techniques
what fingerprint needs to be developed further? - correct answer-latent
Nonporus surfaces - correct answer-metal, plastic, glass, coins, mirror, tile, computers
porous surfaces - correct answer-paper, money, checks, maps, notes, cardboard, cloth
what development technique is used for porous surfaces? - correct answer-chemicals or
lighting
what development technique is used for nonporous surfaces? - correct answer-powders
latent fingerprints are composed of... - correct answer-98% perspiration, 1% amino acids,
1% oils
what does ninhyrdin chemically bond to? - correct answer-amino acids (that are left by
fingerprints)
what are other types of prints? - correct answer-ears, voice, foot, shoes
DACTYLOSCOPY - correct answer-the study of fingerprints
what kind of evidence are fingerprints? - correct answer-individual
During what growth stage are fingerprints formed? - correct answer-in the womb (10.5
weeks)
do fingerprints change with age? - correct answer-no
Do any people have the same fingerprints? - correct answer-no
What is AFIS? - correct answer-computerized system for storing and retrieving fingerprint
records (AUTOMATIVE FINGERPRINT IDENTIFICATION SYSTEM)
How many ridge characteristics needed for a match at the crime scene? - correct
answer-7-10 to 10-12 (the more the better)
plastic fingerprints - correct answer-indentations left in soft materials such as clay or wax
patent fingerprint - correct answer-a visible fingerprint that happens when fingers with blood,
ink, or some other substance on them touch a surface and transfer the pattern of their
fingerprint to that surface
latent fingerprint - correct answer-a hidden fingerprint made visible through the use of
powders or other techniques
what fingerprint needs to be developed further? - correct answer-latent
Nonporus surfaces - correct answer-metal, plastic, glass, coins, mirror, tile, computers
porous surfaces - correct answer-paper, money, checks, maps, notes, cardboard, cloth
what development technique is used for porous surfaces? - correct answer-chemicals or
lighting
what development technique is used for nonporous surfaces? - correct answer-powders
latent fingerprints are composed of... - correct answer-98% perspiration, 1% amino acids,
1% oils
what does ninhyrdin chemically bond to? - correct answer-amino acids (that are left by
fingerprints)
what are other types of prints? - correct answer-ears, voice, foot, shoes
