Forensic final 11/29 Word Scramble
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Question | Answer |
The fingerprint classification system used in most English speaking countries was devised by: | Henry |
Under which circumstances have two people ben found to have identical fingerprints? | None to date |
It is estimated that there are as many as_____ridge characteristics in an average complete fingerprint. | 150 |
The most commonly encountered ridge characteristics (used by AFIS) are the: | bifurcation and ridge ending |
What is the minimum number of ridge characteristics necesary before two fingerprints can be identified as the same? | No minimum exists. Final determination must be made based on experience and knowledge of expert. |
Fingerprints are formed: | During fetal development |
The friction skin ridges | resist slippage and provide a firmer grip |
Prints that are not readily visible are commonly referred to as | latent |
The most common ridge pattern is the | Loop |
To permanently alter the fingerprint and produce scars, one must damage the: | Dermal papillae |
AFIS is a(n) | Computerized system for storing and retrieving fingerprint records |
Prints impressed in a bar of soap are referred to as | plastic |
Which is NOT considered a porous surface? | Tile |
Ninhydrin is used on a latent print to detect | Protein Material |
In which order should chemical treatments visualize latent prints be performed? 1)Ninhydrin 2) iodine fuming 3)Physical developer | 2,1,3 |
Superglue fuming is NOT suitible for us on | Cardboard |
After successfully visualizing a latent print on an object an investigator should next: | take a 1:1 photograph of the print |
The fingerprint pattern accounting for only 5 percent of all known patterns is the: | Arch |
What statement is true of a parital fingerprint? | Any print can identify a criminal if it shows an adequate number of ridge characteristics |
Chemical methods for developing latent fingerprints must be used in the following sequence: | Iodine, ninhydrin, physical developer |
The three most common types of handguns are: | Single-Shot, revolvers, and semi automatics |
The barrel of a shotgun: | is smooth without the grooves and lands found in rifles |
The reason grooves are rifled into the bore of a gun is so that a: | bullet will be made to spin and hence have a true and accurate course on leaving the barrel |
The comparison of two bullets is possible with the comparison microscope. Such a study is made difficult by the fact that: | A, B, and C (all of the above) a: bullets distorted on impact B:lands and grooves subject to wear and tear C:grit and rust can alter markings on bullets fired through same barrel. |
Generally, the gauage of a shotgun is_____ to the diameter of its barrel: | Directly related |
Distinctive markings of shells and cartridges can be made by the: | extractor and ejector mechanism, magazine, firing pin, breech block-all of the above |
IBIS is/are: | automated screening tools for firearm evidence |
Generaly speaking, the amount of gun powder particles found around a bullet hole is ____ to the distance from which the weapon was fired: | directly related |
Gun powder residue patterns can be detected by: | The Greiss test and IR photograph |
The likelihood of detecting GSR on swabs taken from libing subjects more than six hours after a firing has occcurred is ___ the likelihood of detecting GSR within two hours of firing. | Less than |
To prevent the disturbance of latent fingerprints on a firearm, the weapon should be lifted by | The edge of the trigger guard or by the checkered portion of the grip |
Discharged evidence bullets must be carefully handled to avoid damage to the | striation markings |
Tools and tool marks are often found at burglary scenes and can be useful evidence. Proper evidence collection by the field investigator would include | taking a photograph and cast of the marks, if necessary |
Shoe and tire marks impressed into soft earth can be best preserved by | photographing and casting with dental stone |
Which of the following is not expected to show any evidential arks or impressionns? | a shotgun pelet |
Two elements detected on the hands of an individual who has recently fired a weapon are | barium and antimony |
The presence of gunpowder residues on a garment whose color conceals the existence of the residues is best revealed by | infrared photography |
The distribution of gunpowder particles and other discharge residues around a bullet hole permits | determination of the distance from which the gun was fired |
An imprint may be lifted from a surface at a crime scene using | an electrostatic lifting device |
A wear pattern, cut, gouge, or other damage pattern can impart_____ characteristics to a shoe: | individual |
Created by:
BallisticsGal
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