Criminalistics Study Set 1

When a gun is recovered from an underwater location, it should be:

Shoe and tire marks impressed into soft earth can be best preserved by:

The reason grooves are rifled into the bore of a gun is so that a:

To prevent the disturbance of latent fingerprints on a firearm, the weapon should be lifted by:

Distinctive markings of shells and cartridges can be made by the:

Two-dimensional imprints found at a crime scene can be lifted using:

What is NIBIN?

Generally speaking, the amount of gunpowder particles found around a bullet hole is ________ to the distance from which the weapon was fired.

The comparison of two bullets is possible with the comparison microscope. Such a study is made difficult by the fact that:

When an etching agent is applied to a metal surface in order to restore a removed serial number, the stamped area will dissolve at ________ the unstamped area.

Generally, the gauge of a shotgun is ________ to the diameter of its barrel.

Which technique of detecting gunshot residue holds the most promise for the immediate future?

The likelihood of detecting gunshot residue on swabs taken from living subjects more than six hours after a firing has occurred is ________ the likelihood of detecting gunshot residue within two hours of a firing.

Which is NOT a class characteristic of a suspect's sneaker?

Tools and tool marks are often found at burglary scenes and can be useful evidence. Proper evidence collection by the field investigator would include:

The "dermal nitrate test" has fallen into disfavor because of its lack of specificity. Which of the following common materials does NOT give a misleading positive reaction to this test?

The barrel of a shotgun:

Discharged evidence bullets must be carefully handled to avoid damage to the:

Gunpowder residue patterns can be detected by:

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.