fingerprints

Question 1

what is dactylography or dactyloscopy

Answer 1

the branch of science which studies fingerprints

Question 2

what portions of the body are covered with small ridges that are raised portions of the skin

Answer 2

fingers, toes, feet, palms and lips

Question 3

what do the ridges on our fingers do?

Answer 3

help us grip objects

Question 4

what appears dark on a fingerprint image and what appears light

Answer 4

ridge is dark and valley is light

Question 5

at what time do fingerprints start to form

Answer 5

10th week of pregnacy

Question 6

how many layers are the skin

Answer 6

3

Question 7

what is an arch

Answer 7

the ridge pattern starts from one side of the print and leaves from the other side

Question 8

what percentage of arch fingerprints are found

Answer 8

5

Question 9

the center of a loop or whorl pattern is called

Answer 9

core

Question 10

what is dermal or friction ridges

Answer 10

raised portions of the skin, arranged in connected units, which form fingerprints

Question 11

what is a delta

Answer 11

triangular ridge pattern with ridges that go in different directions above and below a triangle ( found in all loop and whorl patters)

Question 12

define fingerprint

Answer 12

impression left on any surface that consists of patterns made by ridges on the tip of a finger

Question 13

define loop

Answer 13

fingerprint pattern in which the ridge enters from one side, curves, then exits on the same side

Question 14

loop fingerprints are found in __% of the population

Answer 14

65

Question 15

define latent

Answer 15

a hidden fingerprint made visible through the use of powders or other techniques

Question 16

____ is the combination of details in the shapes and positions of ridges in fingerprints that make each unique ( also called ridge characteristics)

Answer 16

minutiae

Question 17

define patent

Answer 17

fingerprint that happens when fingers with blood, ink, chalk, grease or dirt on them touch a surface and transfers to that surface

Question 18

what is plastic

Answer 18

three-dimensional fingerprint made in soft material such as clay, soap, paint, putty or wax

Question 19

what fingerprint pattern resembles a bulls eye

Answer 19

whorl

Question 20

what percentage of the population has whorl fingerprints

Answer 20

30

Question 21

what is the outermost layer of the skin

Answer 21

epidermis

Question 22

the innermost layer of the skin

Answer 22

dermis

Question 23

what is the basal layer

Answer 23

cells grow faster then the laters above and below so it collapses and folds to form the shapes of a fingerprint

Question 24

what type of sweat gland is associated with hair follicles

Answer 24

apocrine

Question 25

type of sweat gland associated with the hands and feet

Answer 25

eccrine

Question 26

what is the most common fingerprint

Answer 26

loop

Question 27

least common fingerprint

Answer 27

arch

Question 28

on the right hand, ______ opens towards the left

Answer 28

radial

Question 29

this type of arch pattern has a spike in the middle

Answer 29

tented

Question 30

on the left hand, this loop pattern opens towards the left

Answer 30

ulnar

Question 31

this whorl pattern is ade up of any two loops combined into one print

Answer 31

double loop

Question 32

whorl fingerprint type consisting of a combination of two different types of patterns or which conforms to none of the normal fingerprint type definitions

Answer 32

accidental

Question 33

to be absolutely certain two prints match, they must have __ common minutiae

Answer 33

12

Question 34

the maximum number of minutiae found to be shared between two different individuals is

Answer 34

8

Question 35

minutiae pattern that looks like a "y"

Answer 35

bifurcation

Question 36

method used to lift fingerprints after dusting

Answer 36

tape

Question 37

super glue fingerprinting method

Answer 37

cyanoacrylate

Question 38

this fingerprints test results in a purple blue print when amino acids found in sweat react with chemical

Answer 38

ninhydrin

Question 39

what is silver nitrate

Answer 39

chloride from salt in sweat on a print combines with this to form dark colored prints

Question 40

fuming this chemical causes fingerprints to appear brown then quickly fade

Answer 40

iodine

Question 41

fingerprint are ____ type of evidence

Answer 41

individual

Question 42

what is the method of fingerprinting still used today

Answer 42

galton henry

Question 43

FBI's eletronic storage and searcj programs for fingerprints

Answer 43

AFIS

Question 44

what is the number of fingerprints store in the integrated automated fingerprint identification system

Answer 44

50 million

Question 45

how long does it take for AFIS to produce a list of potentioal matches from a fingerprint

Answer 45

2 hours