Chapter 6 Test

Question 1

Know the difference between a patent fingerprint and a latent fingerprint

Answer 1

Patent- a visible fingerprint produced when fingers coated with blood, ink, or some other substance touch a surface and transfer their print to that surface
Latent- a concealed fingerprint made visible through the use of powders or forensic techniques

Question 2

Know who John Dillinger is

Answer 2

American Public Enemy Number One in the 1930s. He put acid on his fingertips to change their appearance, something he likely learned from pineapple factory workers

Question 3

Can computers identify a fingerprint in a matter of seconds?

Answer 3

No, however, the process can be done in minutes

Question 4

Sir William Hershel is

Answer 4

The person who began collecting fingerprints noted the patterns were unique to each person and were not altered by age

Question 5

Sir Francis Galton is

Answer 5

Verified that fingerprints do not change with age and helped develop the classification system for fingerprints

Question 6

Know the percentage of latent prints that are discovered at a crime scene that displays the palm or side of the hand

Answer 6

20-30%

Question 7

Know what a plastic fingerprint is

Answer 7

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

Question 8

Know who Puttin’ head Wilson is

Answer 8

A lawyer created by Mark Twain in the novel of the same name, he exhibits his knowledge of the cutting-edge technology of the day (fingerprints)

Question 9

When was the earliest study of patterns on human hands in Western culture?

Answer 9

1684 by Dr. Nehemiah Grew

Question 10

When did fingerprint collection begin and by who

Answer 10

In 1856, Sir William Herschel

Question 11

Alphonse Bertillon is

Answer 11

An assistant clerk in the records officer at the police station created a way to identify criminals using a list of physical measurements taken from prisoners, called the Bertillonage method, and helped identify repeat offenders

Question 12

Sir E.R. Henry is

Answer 12

Created a system that divided fingerprint records into groups based on whether you have an arch, whorl, or loop and then all 10 fingers would be printed

Question 13

The imprint of a fingerprint consists of natural secretions of the sweat glands that are present where

Answer 13

In the friction ridge of the skin

Question 14

During which week of gestation are fingerprints formed

Answer 14

10 weeks

Question 15

Know the difference between ulnar and radial loops

Answer 15

An ulnar loop opens toward the little finger, and a radial loop opens toward the thumb

Question 16

Whorl patterns include

Answer 16

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

Question 17

Know the different kinds of arches

Answer 17

A plain arch or a tented arch (has a delta)

Question 18

Minutiae

Answer 18

The combination of details in the shapes and positions of ridges in fingerprints that make each unique; also called ridge characteristics

Question 19

What chemical is used for paper to make a latent print visible?

Answer 19

ninhydrin

Question 20

Peter Biro is

Answer 20

A Hungarian, immigrant currently working in Canada. He is an art conservator who was the first to study the fingerprints left behind on paintings by artists and used these marks to identify artists.

Question 21

Dr. Sue Jickells

Answer 21

A scientist who is researching to learn how things criminals may touch like explosives, cigarettes, and drugs, can leave behind traces on the skin. When detected these substances can tell us more about the lives of the fingerprint owner than just their identities.

Question 22

1995 test of 156 fingerprint examiners result

Answer 22

1 in five examiners made at least one false identification

Question 23

What is the average individual ridge characteristic on a full fingerprint?

Answer 23

Arches- 5%
Whorls 30%
loops - 65%
150 minutiae