Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Winter 2021, Forensic Science > fingerprints > Flashcards

fingerprints Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

Explain the Bertillon system

A

identified people with body measurement (height, reach, width of the head, length of left foot)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Evidence say that fingerprint’s individuality was first recognized during _______

A

prehistoric time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

in ____, William ____ suggests that fingerprints don’t change over life

A

1858

Herschel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Henry ____ suggests that fingerprints ____

A

Faults

can be used to identify one person

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Francis _____ publishes a textbook and ______

A

Galton

types of fingerprints

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

In ___, Edward ____ invents ________ that we still use today

A

1899
Henry
system classification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A fingerprints is ____ and ____ shared by two people

A

individual

not

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The skin of the fingertips ____ after _____. If major damage ____ can be used to identify people

A

repair
burn or shaving
scars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The valleys of the fingerprints = _____

The mountains of the fingerprints=_____

A

grooves

friction ridges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

The friction ridges help with _______

A

friction/grip

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Our skin secretes/picks up ___. Some of it is left behind when we touch stuff making a replica of ______

A

oil

the pattern of friction ridges

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Name the 3 types of fingerprints

A

arch
loop
whorls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

___ of the population has arch

A

5%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what are the two type of subgroups in arch

A

plain and tented

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

_____ of the population has loops

A

60-65%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

_____ is when the loop points to the side of the thumb

____ Is when the loop points to the side of the pinky

A

radial

ulnar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

___ of the population has whorls.

A

30-35%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Name the four types of whorls?

A

Plain whorls
central pocket loop whorls
double loop whorl
accidental loop whorl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

when a ridge is a straight line we say it is a …

A

ridge ending

20
Q

when a ridge seperates in two comme un fer a cheval we say it…

A

bifurcation

21
Q

when a ridge seperates in two then reunites in one straight line we say it is…

A

a lake

22
Q

When there is a small, lonely, line we say it is an…

A

independant ridge

23
Q

when there is a small dot we call it a …

A

dot or island

24
Q

when a line emerges from a straight line and leaves in another direction we call it a…

A

spur

25
Q

when a line travels between two parallel lines we call it…

A

crossover

26
Q

what is the goal of forensic fingerprinting?

A

Comparing two fingerprints and determine if they are form the same finger.

27
Q

What is the name of the system that narrows down the number of fingerprints that could match?

A

Henry system

28
Q

In the henry system, there are ___ fractions.

The ____ and ___ = 0 and the ____ changes depending on which fraction it is.

A

5

loop and arch

29
Q 
Whorl in the henry system is equal to...
\_\_\_ 1 pair 
\_\_\_ 2 pair 
\_\_\_ 3rd pair
\_\_\_ 4th pair 
\_\_\_\_ 5th pair
A

16, 8, 4, 2, 1

30
Q

______ _______ ______ _____ _____

identify each fraction

A

R in - R ri - L th - L mi - L litt

R thu - R mi - R litt - L in - Lri

31
Q

_____ individual ridges math for complete and ___ ___ for partial match

A

150

8-16

32
Q

What is AFIS

A

computer cans, stores and look for the same special features a human would - but digitally t analayse fingerprints

33
Q

What is the method to get the print of a suspect?

A

roll inked fingers on ten-print card. Each finger than palms

34
Q

What is a patent print? How is it processed

A

material on their finger and leaves a visible print.

Photographed than transferred digitally

35
Q

What is a plastic print

A

print in a 3D mold left in a soft substance

36
Q

What is a latent print?

A

Print with oil on the finger, it is invisible

37
Q

Explain the powder method to expose latent prints

A

Black, grey or fluorescent powder. Magnetically sensitive

38
Q

Explain the laser/UV light method of exposing latent prints?

A

Makes print glow and has different filters. Doesnt alter the print

39
Q

Explain the chemical reaction way of exposing the prints and why it isnt ideal?

A

Put chemicals on prints

it is stinky, dangerous and. bad for the environemnt

40
Q

What is Ruvis

A

a camera, with UV lights, that detects prints and can take pictures of them.

41
Q

What type of brush is used for powdering fingerprints?

A

Camel and fiberglass

42
Q

Fingerprint tha are powdered will be lifted with…

A

transparent tape.

43
Q

Name the 4 use of fingerprints in the world.

A

1) background checks
2) Biometric security (access spaces)
3) Mass disater or amnesiac victims idetification
4) Criminal situations

44
Q

What are the 3 issues with fingerprints

A

1) need a print to compare to
2) can’t identify age, race, gender, etc.
3) can’t know how long prints have been there

45
Q

What are the 3 main enemies of fingerprints?

A

1) dy hands
2) gloves
3) rougher surfaces.

46
Q

What kind of surfaces we use the powder technique and the UV lights?

A

Hard surfaces such as mirrors, glass, tiles, painted wood

47
Q

What kind of surfaces we use chemical reactions?

A

porous such as paper, cardboard, and cloth

Winter 2021, Forensic Science (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions