Question 1

Explain the concept of the NIBIN database.

Accepted Answer

The NIBIN database, which stands for the...

Question 2

List common field reagents used to enhance bloody fingerprints.

Accepted Answer

Bloody fingerprints, which are fingerpri...

Question 3

Which of the following statements is true?

Accepted Answer

A)   The diameter of the bore of a rifled firearm is its gauge.
B)   Carbonaceous smoke or soot deposited around a bullet hole is normally indicative of a discharge 12 to 18 feet or less from the target.
C)   The comparison microscope is an indispensable tool of the firearm examiner.
D)   A bullet can be individualized to a weapon by the number and twist of its lands and grooves.
E)   All of the above statements are true.F) C) and E)
G) A) and B)

Question 4

IBIS is/are:

Accepted Answer

A)   reference database of gunsmiths and retail outlets.
B)   trade groups of firearm manufacturers.
C)   automated screening tools for firearm evidence.
D)   lists of licensed gun dealers.
E)   safety education courses for firearm use.F) B) and D)
G) A) and B)

Question 5

Two elements detected on the hands of an individual who has recently fired a weapon are:

Accepted Answer

A)   barium and antimony.
B)   zinc and copper.
C)   antimony and iron.
D)   iron and lead.
E)   barium and nitrates.F) A) and B)
G) A) and D) A

Question 6

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

Accepted Answer

A)   striation markings.
B)   manufacturer's imprint.
C)   ejection pattern.
D)   caliber markings.
E)   investigator's initials.F) C) and D)
G) None of the above

Question 7

Which of the following factors is least likely to be considered by the examining tool mark technician?

Accepted Answer

A)   The direction of the tool movement as it passes over the surface.
B)   The brand name of the tool.
C)   The side or portion of the tool making the impression.
D)   The angle at which the tool was held.
E)   None of the aboveF) B) and D)
G) B) and C) B

Question 8

The distribution of gunpowder particles and other discharge residues around a bullet hole permits:

Accepted Answer

A)   estimation of the height of the shooter
B)   determination of the distance from which the gun was fired
C)   determination of the caliber of bullet used
D)   determination of the kind of firearm used
E)   estimation of the angle of bullet impactF) A) and B)
G) B) and E) B

Question 9

An element is selective in the frequency of light it will absorb. This selectivity is due to its:

Accepted Answer

A)   proton cloud.
B)   atomic number.
C)   electron energy levels.
D)   atomic mass.
E)   number of neutrons.F) A) and B)
G) C) and D)

Question 10

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

Accepted Answer

A)   photographing and casting with dental stone.
B)   photographing and then use of the electrostatic lifting technique.
C)   casting with dental stone and then attempting the electrostatic lift technique.
D)   It is not possible to accurately preserve such markings.
E)   both A and BF) A) and B)
G) B) and D)

Question 11

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

Accepted Answer

A)   color
B)   style
C)   brand
D)   size
E)   wear marksF) None of the above
G) A) and D)

Question 12

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

Accepted Answer

A)   the presence of grit and rust can to some degree alter the marking on bullets fired through the same barrel.
B)   evidence bullets often are distorted on impact and only small areas are found with intact markings.
C)   lands and grooves are subject to wear and tear and hence striation markings are susceptible to continuing change.
D)   all of the above
E)   none of the aboveF) C) and D)
G) A) and E)

Question 13

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

Accepted Answer

A)   directly related
B)   indirectly related
C)   not relatedD) All of the above
E) B) and C)

Question 14

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.

Accepted Answer

A)   greater than
B)   less than
C)   the same asD) None of the above
E) All of the above

Question 15

An imprint may be lifted from a surface at a crime scene using:

Accepted Answer

A)   plaster of paris
B)   a magnet
C)   an electrostatic lifting device
D)   imido black dye
E)   luminolF) A) and E)
G) A) and B)

Question 16

Explain how an investigator determines how far a weapon was fired from a target.

Accepted Answer

An investigator can determine how far a ...

Question 17

Gun powder residue patterns can be detected by:

Accepted Answer

A)   the Greiss test.
B)   IR photograph.
C)   both A and B
D)   neither A nor BE) C) and D)
F) A) and C)

Question 18

A wear pattern, cut, gouge, or other damage pattern can impart ___________ characteristics to a shoe.

Accepted Answer

A)   class
B)   non-comparative
C)   wear
D)   individual
E)   genericF) A) and B)
G) B) and C)

Question 19

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

Accepted Answer

A)   bullet will be reduced in size before it exits the gun.
B)   bullet will be made to spin and hence have a true and accurate course on leaving the barrel.
C)   ballistics examiner will have an easier time identifying evidence.
D)   manufacturer can put its unique mark on its product.
E)   bullet moving through it will have unique striations.F) A) and D)
G) C) and D)

Question 20

Objects bearing tool marks should either be submitted intact to the crime lab or a ___________ should be taken of the tool mark.

Accepted Answer

A)   cast
B)   impression
C)   black and white photograph
D)   digital photograph
E)   film photographF) C) and D)
G) B) and C)

Exam 16: Forensic Aspects of Fire and Explosion Investigation

Explain the concept of the NIBIN database.

Correct AnswerAnswered by ExamLex AIThe NIBIN database, which stands for the...View AnswerShow Answer

List common field reagents used to enhance bloody fingerprints.

Correct AnswerAnswered by ExamLex AIBloody fingerprints, which are fingerpri...View AnswerShow Answer

Which of the following statements is true?

Correct AnswerverifiedShow Answer

IBIS is/are:

Correct AnswerverifiedShow Answer

Two elements detected on the hands of an individual who has recently fired a weapon are:

Correct AnswerverifiedA

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

Correct AnswerverifiedShow Answer

Which of the following factors is least likely to be considered by the examining tool mark technician?

Correct AnswerverifiedB

The distribution of gunpowder particles and other discharge residues around a bullet hole permits:

Correct AnswerverifiedB

An element is selective in the frequency of light it will absorb. This selectivity is due to its:

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

An imprint may be lifted from a surface at a crime scene using:

Correct AnswerverifiedShow Answer

Explain how an investigator determines how far a weapon was fired from a target.

Correct AnswerAnswered by ExamLex AIAn investigator can determine how far a ...View AnswerShow Answer

Gun powder residue patterns can be detected by:

Correct AnswerverifiedShow Answer

A wear pattern, cut, gouge, or other damage pattern can impart ___________ characteristics to a shoe.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Objects bearing tool marks should either be submitted intact to the crime lab or a ___________ should be taken of the tool mark.

Correct AnswerverifiedShow Answer

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The NIBIN database, which stands for the...
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Bloody fingerprints, which are fingerpri...
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A

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An investigator can determine how far a ...
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