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These are the ballistic test questions. Use your book and notes. Sorry that the online exam was unsuccessful
1)When an etching agent is applied to a metal surface in order to restore a removed serial number, the stamped area will dissolve at ______ as the unstamped area.
2)The "dermal nitrate test" has fallen into disfavor because of its lack of specificity. What common materials give a misleading positive reaction to this test?
3)Distinctive markings of shells and cartridges can be made by the:
4)The likelihood of detecting GSR on swabs taken from living subjects more than six hours after a firing has occurred is ______ the likelihood of detecting GSR within two hours of a firing
5)Tools and tool marks are often found at burglary scenes and can be useful evidence. Proper evidence collection by the field investigator would include:
6)An element is selective in the frequency of light it will absorb. This selectivity is due to its:
7)Which are class characteristic of a suspect's sneaker?
8)The comparison of two bullets is possible with the comparison microscope. Such a study is made difficult by what issues?
9)When a gun is recovered from an underwater location, it should be_______________ ( list steps)
10)Generally speaking, the amount of gun powder particles found around a bullet hole is ______ to the distance from which the weapon was fired.
11)In atomic absorption chromatography, the amount of light absorbed is ______ to the concentration of the element in the test sample.
12)Generally, the gauge of a shotgun is ______ to the diameter of its barrel.
13)What is IBIS
14)Which technique of detecting GSR holds the most promise for the immediate future?
15)Gun powder residue patterns can be detected by:
16)The reason grooves are rifled into the bore of a gun is so that _________________________________
17)Discharged evidence bullets must be carefully handled to avoid damage to the:
18)Shoe and tire marks impressed into soft earth can be best preserved by doing what?
19)Chokes are sometimes found on shotguns where they function to constrict the end of the barrel. The speed and distance traveled by pellets fired from a narrow choke is ______ the speed and distance traveled by pellets fired from a shotgun with a wide choke.
