Module 2 (weeks 3 and 4) Flashcards Preview

Intro to Forensics > Module 2 (weeks 3 and 4) > Flashcards

Flashcards in Module 2 (weeks 3 and 4) Deck (38)
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1
Q

What is a gross examination?

A

visible to the unaided eye

2
Q

In a healthy middle-aged individual, carbon monoxide concentration greater than …… is considered fatal

A

50-60%

3
Q

What are tangential fractures lines?

A

encircle point of impact

4
Q

What is livor mortis?

A

pooling of blood

5
Q

What is rigor mortis?

A

stiffness

6
Q

What is algor mortis?

A

cooling of body

7
Q

What wounds does blunt trauma cause?

A

lacerations

8
Q

What wounds do sharp objects cause?

A

incisions

9
Q

What is exsanguination?

A

bleeding to death

10
Q

What is the manner of death?

A

how the death came to be

11
Q

What is the cause of death?

A

how the person died

12
Q

What is “grave wax” produced via?

A

saponification

13
Q

What are 4 levels of progressive decomposition?

A

decay, fresh, bloat, dry

14
Q

What insects are late stage scavengers?

A

hide beetles

15
Q

What are the steps in the crime scene investigation process? (8)

A
assessment
control
preservation
examination
interpretation
recording 
collection
case management
16
Q

What must a qualified CSI be able to do?

A

process anything found at a crime scene

17
Q

What is an example of a non-pyrolyzable solid fuel?

A

charcoal

18
Q

What should fire debris suspected of containing ignitable fluids be collected in?

A

sealed metal can

19
Q

What are 2 examples of petroleum-based accelerants?

A

kerosene and gasoline

20
Q

What is Mickrosil used for?

A

capturing fine details on sliding tool marks

21
Q

What biological fluid does the acid phosphate test identify?

A

semen

22
Q

What are blood and biological fluids collected in?

A

sealed paper bags

23
Q

What are the products of complete combustion? (3)

A

heat, water and carbon dioxide

24
Q

What is an example of a primary high explosive?

A

nitroglycerine

25
Q

What are 3 tests for blood?

A

Hemastix
luminol
O-Tol

26
Q

What is the preparation technique for fire debris samples containing hydrocarbons of low volatility?

A

solvent wash

27
Q

What are the characteristics of an entry wound at contact (3), intermediate (1) and distant ranges (1)?

A

contact: soot on outside of skin
muzzle imprint
laceration from gases

intermediate: powder stippling
distant: hole roughly size of projectile caliber

28
Q

Are exit wound generally larger or smaller than entry wounds?

A

larger

29
Q

What type of guns have no rifling inside the barrel?

A

shot guns

30
Q

What part of the gun will determine how long a force is applied to the bullet?

A

barrel length

31
Q

What is not discharged from the rifle muzzle upon firing?

A

cartridge

32
Q

What is the land-to-land diameter called?

A

caliber

33
Q

What instrument is used for the identification of a firearm?

A

comparison microscope

34
Q

What do rifled weapons have?

A

lands and grooves

35
Q

What are the three types of rotational forces that can act on a bullet?

A

yaw
precession
nutation

36
Q

What are the three types of damage bullets can cause to tissue?

A

laceration + crushing
cavitation
shock waves

37
Q

What is the muzzle velocity?

A

speed of bullet exiting barrel

38
Q

What is etching?

A

technique used to recover serial numbers that have been defaced