Intro to Forensic Science Exam 2
Three Fundamental Principles of Fingerprints correct answersAll
Fingerprints are unique
Remains unchanged
throughout life Can be
systematically classified
Classes of Ridge Patterns correct
answersLoops Whorls
Arches
Loops correct answersMost Common - 65%
-Radial Loop - opens towards the thumb
-Ulnar Loop - opens towards the little
finger
Whorls correct answers30%
-Plain Whorl
-Central Pocket Loop
-Double Loop
-Accidental
Arches correct answersLeast Common -
5%
-Plain Arch
-Tented Arch
Minutiae correct answersRidge
Characteristics
Fingerprint Powder correct answerscan be applied with a brush or magnetic
wand, and adhere to perspiration and/or body oils of the print.
Superglue correct answersa chemical that actually interacts with and
visualizes a latent fingerprint.
Iodine Fuming correct answersinvolves heating iodine crystals that cause
vapors which combine with latent prints to make them visible.
Ninhydrin correct answersreacts chemically with trace amounts of amino
acids present in latent prints to produce a purple-blue color.
Physical Developer correct answersis a silver nitrate-based reagent used
to develop prints when other chemical methods are ineffective.
, UV Light correct answersReflected Ultraviolet Imaging System (RUVIS) can
aid in the detecting of latent fingerprints, without chemicals or powder.
Latent Prints correct answersPrints left by body oils or perspiration that
are invisible. Visible Prints correct answersPrints that are visible
Plastic Prints correct answersPrints left in soft
materials AFIS correct answersFingerprint
Database
Dermis correct answersThe inner most
layer Contains Sweat Glands and
Nerves
Dermal Papillae correct answersCauses Ridges to
Form Epidermis correct answersOuter layer
Ridges correct answersMake up the fingerprints
Types of Firearms correct
answersHandguns Long Guns
Single Action correct answersManually cock
pistol Double Action correct
answersAutomatically cock pistol Single Shot
correct answers1 Bullet
Revolver correct answersRotating Firing
Chamber
Semi-Automatic correct answersFires and re-loads firing chamber
automatically Rifles correct answersRifled Barrel
Magazine
Shotgun correct answersSmooth
Barrel Shells
Single or Double Barrel
Rifled Barrel correct answersThe spiral grooves formed in the bore of a
firearm barrel that impart spin to the projectile when it is fired.
-Striations formed from the rifling are individual characteristics
Bore correct answersThe interior of a firearm barrel
Three Fundamental Principles of Fingerprints correct answersAll
Fingerprints are unique
Remains unchanged
throughout life Can be
systematically classified
Classes of Ridge Patterns correct
answersLoops Whorls
Arches
Loops correct answersMost Common - 65%
-Radial Loop - opens towards the thumb
-Ulnar Loop - opens towards the little
finger
Whorls correct answers30%
-Plain Whorl
-Central Pocket Loop
-Double Loop
-Accidental
Arches correct answersLeast Common -
5%
-Plain Arch
-Tented Arch
Minutiae correct answersRidge
Characteristics
Fingerprint Powder correct answerscan be applied with a brush or magnetic
wand, and adhere to perspiration and/or body oils of the print.
Superglue correct answersa chemical that actually interacts with and
visualizes a latent fingerprint.
Iodine Fuming correct answersinvolves heating iodine crystals that cause
vapors which combine with latent prints to make them visible.
Ninhydrin correct answersreacts chemically with trace amounts of amino
acids present in latent prints to produce a purple-blue color.
Physical Developer correct answersis a silver nitrate-based reagent used
to develop prints when other chemical methods are ineffective.
, UV Light correct answersReflected Ultraviolet Imaging System (RUVIS) can
aid in the detecting of latent fingerprints, without chemicals or powder.
Latent Prints correct answersPrints left by body oils or perspiration that
are invisible. Visible Prints correct answersPrints that are visible
Plastic Prints correct answersPrints left in soft
materials AFIS correct answersFingerprint
Database
Dermis correct answersThe inner most
layer Contains Sweat Glands and
Nerves
Dermal Papillae correct answersCauses Ridges to
Form Epidermis correct answersOuter layer
Ridges correct answersMake up the fingerprints
Types of Firearms correct
answersHandguns Long Guns
Single Action correct answersManually cock
pistol Double Action correct
answersAutomatically cock pistol Single Shot
correct answers1 Bullet
Revolver correct answersRotating Firing
Chamber
Semi-Automatic correct answersFires and re-loads firing chamber
automatically Rifles correct answersRifled Barrel
Magazine
Shotgun correct answersSmooth
Barrel Shells
Single or Double Barrel
Rifled Barrel correct answersThe spiral grooves formed in the bore of a
firearm barrel that impart spin to the projectile when it is fired.
-Striations formed from the rifling are individual characteristics
Bore correct answersThe interior of a firearm barrel
