Fingerprint Content Flashcards

1
Q

made by fingers touching a surface after the ridges have been in contact with a colored material (ex: blood, paint, dirt, ink)

A

visible prints

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2
Q

ridge impressions left on a soft material (ex: putty, wax, soap, dust)

A

Plastic Prints/ Impressions

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3
Q

invisible prints left behind by clear oils on the fingertips

A

latent prints

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4
Q

can locate prints on most non-absorbent surfaces without the aid of a chemical or powders

A

RUVIS (reflected ultraviolet imaging systems)

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5
Q

can be used to make latent prints visible

A

fingerprint powders

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6
Q

… and … powders are adequate for most latent print work

A

black and gray

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7
Q

3 methods for collecting fingerprints

A
  • Iodine Fuming
  • Ninhydrin Chemical Reaction
  • Super glue Fuming
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8
Q

prints remain … during an individuals lifetime with the exception of …

A

unchanged; injuries

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9
Q

careful study of ridge characteristics

A

minutiae

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10
Q

T/F: no two people have the same fingerprint

A

True

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11
Q

the center of a loop or whorl

A

core

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12
Q

a triangular region near a loop

A

delta

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13
Q
  • counting from the core to the edge of the delta
  • distinguishes one fingerprint from another
A

ridge count

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14
Q

3 types of whorls

A
  • central pocket loop whorl
  • double loop whorl
  • accidental whorl
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15
Q

2 types of arches

A
  • plain arch
  • tented arch
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16
Q

What are fingerprints a result of?

A

oil and secration

17
Q

Where are the soils and secration that are transferred to a surface by the what of ones finger?

A

ridges

18
Q

fingerprints are considered to be a form of … evidence

A

class

19
Q

You need at least a … from a crime scene in order for it to be used as evidence

A

partial print

20
Q

… dusted in order to identify ridge patterns

A

Plastic/Impression

21
Q

most common form of fingerprints?

A

loops

22
Q

Program used to house fingerprints and make it possible to obtain a match of a fingerprint

A

AFIS (automated fingerprint identification system)

23
Q

What does a fingerprint examiner look for between a suspect print and a crime scene print?

A

similar minute patterns

24
Q

fingerprint extracting method that uses chemical reactions to make prints visible

A

superglue Fuming

25
Q

When are fingerprints formed?

A

during pregnancy before birth

26
Q

Why is the use of fingerprint identifications not perfect?

A

the current technology and examiners

27
Q

T/F: A fingerprint pattern will remain unchanged for the life of an individual; however the print itself may change due to scars or skin disease

A

True

28
Q

3 specific classes for all fingerprints?

A
  • loops
  • whorls
  • arches
29
Q

simplest type of fingerprints that are formed by ridges

A

arches

30
Q

must have one delta and one or more ridge that enter and leave on the same side

A

loops

31
Q

have at least one ridge that makes a complete circuit, and also have at least two deltas

A

whorls

32
Q

65%

A

loop

33
Q

30%

A

whorl

34
Q

5%

A

arch

35
Q

What is the minimum number of matching point required to identify an unknown latent print?

A

8

36
Q

invisible print

A

latent print

37
Q

visible print

A

patent print

38
Q

4 stages of fingerprint analysis process?

A

1.) Analysis
2.) Comparison
3.) Verification
4.) Evauation

39
Q

What is the origin of fingerprints?

A

unknown