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62 Cards in this Set

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  • Back
Which of the following materials would be excellent to make a cast of extremely faint hammer blows on a safe

1. Posmoulage
2. Epoxy casting
3. Silicone rubber
4. Dental stone
1. Posmoulage
What is the approximate circumference of a tire, in feet

1. 1 to 3
2. 5 to 8
3. 10 to 12
4. 13 to 15
2. 5 to 8
When using a hollow cast with melted moulage, how many minutes should you let it stand before pouring out the excess moulage

1. 1 to 1 1/2
2. 2 to 3
3. 5 to 6
4. 10 to 15
2. 2 to 3
When a laboratory examines cast and mold evidence, class and individual characteristics are considered

1. True
2. False
1. True
Which of the following types of markers may be used to mark glass fragments

1. Grease pencil
2. Diamond point pencil
3. Carborundum pencil
4. All of the above
4. All of the above
Refers to the change of direction of a ray of light passing through a medium

1. Density
2. Fluorescence
3. Refractive index
4. Spectrographic analysis
3. Refractive index
Based on the fact that mineral constituents impart a distinctive reaction when this technique is used

1. Density
2. Fluorescence
3. Refractive index
4. Spectrographic analysis
2. Fluorescence
This technique is based on comparing the characteristics of known pieces of glass

1. Density
2. Fluorescence
3. Refractive index
4. Spectrographic analysis
1. Density
Has the greatest value in demonstrating major differences between two samples

1. Density
2. Fluorescence
3. Refractive index
4. Spectrographic analysis
4. Spectrographic analysis
Made when a tool is pressed against or into a receiving surface

1. Tool Mark
2. Friction mark
3. Combination mark
4. Negative impression
4. Negative Impression
Made when a crowbar is forcefully inserted into a space between a door and the door facing

1. Tool mark
2. Friction mark
3. Combination mark
4. Negative impression
3. Combination mark
Made when a tool cuts into or slides across a surface

1. Tool mark
2. friction mark
3. Combination mark
4. Negative impression
2. Friction mark
Usually made when a crowbar is used to pry open a door to window

1. Tool mark
2. Friction mark
3. Combination mark
4. Negative impression
4. Negative impression
An impression, cut, scratch, or abrasion made when a tool is brought into contact with an object

1. Tool mark
2. Friction mark
3. Combination mark
4. Negative impression
1. Tool mark
This type of mark may be made by a bolt cutter

1. Tool mark
2. Friction mark
3. Combination mark
4. Negative impression
2. Friction mark
Tool mark evidence may be used to for which of the following reasons

1. To link a person who uses a given tool with the crime scene
2. To establish a connection between similar evidence discovered in a series of crimes
3. To compare a tool mark from crime scene with a tool mark found on the property of a suspect
4. All of the above
4. All of the above
When processing a tool mark as evidence, how many different courses of actions are available to the investigator

1. Seven
2. Five
3. Three
4. Nine
3. Three
A casting can be just as good or better than the original impression

1. True
2. False
2. False
An area containing a tool mark that is removed as evidence should be marked with all except which of the following information

1. Case number
2. Command's name
3. Investigator's intials
4. Date and time of removal
2. Command's name
Wire obtained for laboratory examination should not be cut with the suspect tool

1. True
2. False
1. True
Serial numbers on manufactured objects are made up of which of the following

1. Individual letters
2. Combination of numbers
3. Combination of numbers, letters or symbols
4. All of the above
4. All of the above
Serial numbers are usually attached to objects in all but which of the following ways

1. Engraved
2. Permanent ink
3. Molded
4. Etched
2. Permanent ink
On a normal person, blood usually begins to clot after how many minutes

1. 1 to 2
2. 2 to 3
3. 3 to 5
4. 6 to 8
3. 3 to 5
What color is blood after after it has completely dried

1. Red
2. Black
3. Reddish-brown
4. Reddish-black
3. Reddish-brown
When a drop of blood falls from 12 to 60 inches, the blodstains appear jagged

1. True
2. False
1. True
When a drop of blood falls from 60 to 12 inches, the bloodstains appear as a circular disk on a smooth surface

1. True
2. False
1. True
When a drop of blood falls from 2 to 3 yards, it may splash upon impact and from many small bloodstains

1. True
2. False
1. True
Blood usually clots in approximataely how many minutes

1. 1 to 3
2. 4 to 6
3. 10 to 20
4. 25 to 30
3. 10 to 20
Before sending a bloodstained article to the lab for examination it should be thoroughly dried. How should the drying process be completed

1. Place the article in a dryer
2. Place the article under heat lamps
3. Place the article where an electric fan can blow across
4. Place the article where it can be dried naturally
4. Place the article where it can be dried naturally
What fraction of and ounce of blood is required for laboratary

1. 1/16
2. 1/6
3. 1/4
4. 1/2
1. 1/16
How many tubes of blood should be submitted to the lab for examination

1. One
2. Two
3. Three
4. Four
2. Two
Human blood is classified into a total of how many blood groups

1. Six
2. Five
3. Three
4. Four
4. Four
In the continental United States what is the approximate percentage of people who belong to the blood group AB

1. 7%
2. 2%
3. 3%
4. 5%
4. 5%
In the Continental United States what is the approximate percentage of people who belong to blood group o

1. 75%
2. 63%
3. 51%
4. 43%
4. 43%
Grouping dried blood stains is considerably more difficult than grouping liquid blood

1. True
2. False
1. True
When human blood is examined in the laboratory, the preferred test is the percipitin test

1. True
2. False
1. True
For blood group testing, what size bloodstain is generally sufficient for a conclusive determination

1. 1/16 x 1/8 in.
2. 1/6 x 1/8 in.
3. 1/2 x 1/4 in.
4. 3/4 x 7/8 in.
3. 1/2 x 1/4 in.
Approximately what percentage of the population are secretors

1. 25%
2. 35%
3. 65%
4. 80%
4. 80%
A continuous dark line of varying width running up the center

1. Cortex
2. Cuticle
3. Medulla
4. Cuticular scales
3. Medulla
The outer surface of the hair

1. Cortex
2. Cuticle
3. Medulla
4. Cuticular scales
2. Cuticle
Similar to overlapping shingles on a roof

1. Cortex
2. Cuticle
3. Medulla
4. Cuticular scales
2. Cuticle
The inner portion of the hair

1. Cortex
2. Cuticle
3. Medulla
4. Cuticular scales
1. Cortex
The core portion of the hair shaft

1. Cortex
2. Cuticle
3. Medulla
4. Cuticular scales
3. Medulla
Contains the pigmentation of the hair

1. Cortex
2. Cuticle
3. Medulla
4. Cuticular scales
1. Cortex
What is usually the first thing a laboratory determines about a hair sample

1. If it is from a male or female
2. If it is human or animal
3. The race of a person
4. The part of the body the hair is from
2. If it is human or animal
In the case of human hairs the laboratory determinations may include which of the following

1. How the hair was removed
2. How the hair was treated
3. Blood grouping
4. All of the above
4. All of the above
Contact between two pieces of fabric seldom can be made without an interchange of fiber material

1. True
2. False
1. True
When known samples from a victim or suspect are collected, what minimum quantity of hair or fabric strands should be collected

1. 5
2. 12
3. 20
4. 35
3. 20
When you secure soil for comparsion samples, about how much soil should you collect

1. 1 teaspoon
2. 2 tablespoons
3. 5 large scoops
4. 1 quart
2. 2 tablespoons
When a soil sample is taken, it is seldom necessary to dig deeper than how many inches

1. 1/8 to 1/4
2. 1/8 to 3/16
3. 1/2 to 3/4
4. 1 to 2
3. 1/2 to 3/4
Permits qualitative and quanitative analysis of a substance

1. Infrared light
2. Ultraviolet light
3. Spectrophotometer
4. Gas-liquid chromatography
3. Spectrophotometer
Material to be analyzed is injected

1. Spectrograph
2. Infrared light
3. Spectrophotometer
4. Gas-liquid chromatography
4. Gas-liquid chromatography
Has no fluorescent effect that can be seen with the unaided eye

1. Spectrograph
2. Infrared light
3. Ultraviolet light
4. Spectrophotometer
2. Infrared light
The light emission phenomenon resulting is one of fluorescence

1. Infrared light
2. Ultraviolet light
3. Spectrophometer
4. Gas-liquid chromatography
2. Ultraviolet light
Minute quantities of evidentiary material are often analyzed

1. Spectrograph
2. Infrared light
3. Spectrophometer
4. Gas-liquid chromatography
1. Spectrograph
A mixture of several substances may be analyzed

1. Spectrograph
2. Infrared light
3. Spectrophometer
4. Gas-liquid chromatography
4. Gas-liquid chromatography
Produces a graph showing the basic constituents and trace elements

1. Spectrograph
2. Infrared light
3. Spectrophometer
4. Gas-liquid chromagraphy
1. Spectrograph
Uses a slightly shorter wavelenght than normal visible light

1. Spectrograph
2. Infrared light
3. Ultraviolet light
4. Spectrophometer
3. Ultraviolet light
The application of this instrument lies primarily in its identification and analysis of substances

1. Spectrograph
2. Ultraviolet light
3. Spectrophometer
4. Gas-liquid light
3. Spectrophometer
Uses a slightly longer wavelenght than normal visible light

1. Infrared light
2. Ultraviolet light
3. Spectrophometer
4. Gas-liquid chromagraphy
1. Infrared light
Conditions under which poloygraph examinations may be conducted are set forth in which of the following manuals

1. SECNAVINST 3120.32
2. SECNAVINST 5520.4
3. OPNAVINST 5580.1
4. OPNAVINST 5530.15
2. SECNAVINST 5520.4
Only DOD certified examiners or intern examiners under direct supervision of a certified examiner are authorized to conduct polygraph examinations

1. True
2. False
1. True