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Forensics Midterm Review

Total questions: 120

Worksheet time: 3600secs

Name
Class
Date
1.
Trace evidence
a)
small but measurable amounts of physical or biological material found at crime scene
b)
the documented and unbroken transfer of evidence
c)
a location where crime was took place
d)
a kind of evidence that identifies a particular person or thing
2.
Paper bindle
a)
a folded paper used to hold trace evidence
b)
the documented and unbroken transfer of evidence
c)
a location where crime was took place
d)
evidence that (if true) proves an alleged fact, such as an eyewitness account of crime
3.

A person who has seen someone or something and can communicate these facts is:

a)

an eyewitness.

b)

a witness.

c)

a court reporter.

d)

a personal observer.

4.

Which of the following is the best definition of forensic science?

a)

The science of studying dead people

b)

The application of science to medicine

c)

The application of science to the law

d)

The study of poisons

5.

Locard's exchange principle implies all of the following EXCEPT?

a)

Fibers can be transferred from one person's clothing to another

b)

Blood at a crime scene can be used to identify blood type

c)

Hair from your pet may be transferred to your clothing

d)

All of the above imply Locard's exchange principle

6.

Which of these is a factor that might affect or alter an eye witness's testimony?

a)

If the crime was traumatic

b)

The length of the crime they witnessed

c)

How attractive or unattractive the suspect is

d)

All of the above

7.

A crime scene sketch should include all of the following EXCEPT?"

a)

a label to indicate the direction of north on the diagram

b)

a scale of size

c)

the location of the crime scene

d)

the type of search pattern detectives used to make the sketch

e)

all of the above should be included

8.

What is always the first step that needs to take place during an investigation?

a)

Preserve the crime scene

b)

Photograph the crime scene

c)

Sketch the crime scene

d)

Arrest perpetrators

9.

What is any physical location in which a crime has occurred or is suspected of having occurred?

a)

Crime Scene

b)

Forensics spot

c)

Accomplice

d)

Alibi

10.

which of the following is true about blood spatter?

a)

It can help determine the velocity at which the blood traveled

b)

it can be used to determine angle of impact

c)

it shows the direction the blood traveled

d)

it can be used to locate the point of origin where the blood came from

e)

all of the above are true

11.

Deriving a conclusion from the facts using a series of logical steps is

a)

logical.

b)

observation.

c)

perception.

d)

deductive reasoning.

e)

opinion.

12.

Interpreting information received from the senses is a

a)

logical.

b)

observation.

c)

perception.

d)

deductive reasoning.

e)

opinion.

13.
A person thought to be guilty of a crime or offense
a)
victim
b)
officer
c)
suspect
d)
bad guy
14.

Processing a crime scene involves:

a)

only collecting evidence and taking pictures

b)

Collecting evidence, sketching the scene, taking pictures, interviewing suspects, and examining the scene

c)

only examining the scene and interviewing witnesses

d)

only sketching the scene and taking pictures

15.

How many antigens does O- blood type have?

a)

3

b)

2

c)

1

d)

6

e)

0

16.
If red blood cells clump as a result of the blood not being compatable
a)
antigens
b)
antibodies
c)
agglutination
d)
antibrowns offense
17.
Genes are 
a)
DNA section that code for protein
b)
different forms of the same allele
c)
in the red blood cell responsible for clotting
18.
Alleles are
a)
variations of a gene
b)
code for DNA
c)
responsible for fighting infection in red blood cell
19.
Genotype 
a)
what one sees as a physical trait
b)
the genetic code on the chromosomes
c)
someone on Jersey Shore
20.

Something that can establish or disprove a fact is called:

a)

Evidence

b)

Hearsay

c)

Misdemeanor

d)

Deductive reasoning

21.

What is the irreversible cessation of circulation of blood and brain activity?

a)

death

b)

heart attack

c)

cancer

d)

stroke

22.

The cooling of the body after death.

a)

Autolysis

b)

Algor Mortis

c)

Liver Mortis

23.

The spontaneous break-down of cells as they self-digest.

a)

Decomposition

b)

Algor Mortis

c)

Autolysis

24.

The immediate reason for a person's death.

a)

Forensic Entomology

b)

Cause of death

c)

Manner of death

25.

The specific body failure that leads to death.

a)

Manner of death

b)

Mechanism of death

c)

Cause of death

26.
bleeding to death
a)
decomposition
b)
autopsy
c)
asphyxiation
d)
exsanguinations
27.
death from a lack of oxygen
a)
decomposition
b)
exsanguinations
c)
putrefaction
d)
asphyxiation
28.
refers to an underlying cause of death, as opposed to the final cause.
a)
pupa
b)
adipocere
c)
proximate cause of death
d)
pulmonary arrest
29.

Algor mortis stands for

a)

Telling time of death using body stiffness

b)

Telling time of death using blood pulling

c)

Telling time of death using temperature loss

30.

What color is normal Lividity?

a)

Red

b)

Pink

c)

Purple

31.

Which of the following would be affected first by rigor mortis?

a)

Upper legs

b)

Face

c)

Abdomen

d)

Lower legs

32.

How many hours does it take livor mortis to be fully settled? (Choose the best answer choice)

a)

Six hours

b)

Four hours

c)

Two hours

d)

Eight hours

33.
Rigor mortis means
a)
Death stiffness
b)
Death color
c)
Death bloat
d)
Death heat
34.

Estimate the approximate time of death for the following situation:


A body was found with no evidence of rigor.

a)

2 - 6 Hours

b)

8 Hours

c)

Less than 2 Hours

d)

More than 10 Hours

35.

If food is found in the small intestine but the stomach is empty, when did death occur?

a)

Death within 2 hours after meal

b)

Death 4-6 hours after the meal

c)

Death 12 or more hours after the meal

36.

How much time would it take for all undigested food to be released from the large intestine?

a)

4 to 6 hours

b)

12 hours

c)

24 hours

37.

A body is found that has a strong odor and maggots are seen covering the body. Which stage of decomposition is this body in?

a)

bloating (putrefaction)

b)

advanced decay

c)

active decay (black putrefaction)

d)

fresh (initial)

38.

PMI is

a)

postmortem insect

b)

Postmeridian interval

c)

Premortem interval

d)

Postmortem Interval

39.
Match description with the correct stage of decomposition:
livor, rigor, and algor mortis occur during this stage
a)
fresh
b)
bloat
c)
active decay
d)
advanced decay
40.

Match description with the correct stage of decomposition: body begins to dry out and ferments

a)

fresh

b)

bloat

c)

active decay

d)

post decay

41.

Match description with the correct stage of decomposition: pressure inflates the body and forces fluids out of cells and into body cavity

a)

fresh

b)

bloat

c)

active decay

d)

post decay

42.

Match description with the correct stage of decomposition:

occurs 50-365 days after death

a)

black putrefaction

b)

bloat

c)

skeletal stage

d)

butyric fermentation

43.
The pelvis of a female is _____ as compared to a male.
a)
wide and circular
b)
wide and heart-shaped
c)
narrow and circular
d)
narrow and heart-shaped
44.
You notice a skull that has a rough and bumpy surface.  What sex this this characteristic typically associated with?
a)
Male
b)
Female
45.
a)
vertebrae
b)
tibia
c)
pelvis
d)
femur
46.
The subpubic angle is 104 degrees. The body is most likely a
a)
male
b)
female
47.
A skull is found with rounded eye orbits, a thin brow ridge, and no occipital protuberance.  What is the sex of this skull?
a)
Male
b)
Female
48.
The pelvis in the picture is most likely
a)
male
b)
female
49.

Suture Lines on the skull are helpful in determining the __________ of a victim

a)

age

b)

name

c)

race

d)

sex

50.
Mitochondrial DNA is inherited from
a)
the mother
b)
the father
c)
both parents
d)
neither parent
51.

Which of the following are factors that can affect rigor mortis?

a)

temperature

b)

activity before death

c)

body weight

d)

all of these

52.
post-mortem examination
a)
adipocere
b)
autolysis
c)
autopsy
d)
entomology
53.

An old woman dies peacefully in her sleep. There is no sign of foul play. What is her manner of death?

a)

accidental

b)

homicidal

c)

natural

d)

undetermined

54.

Of the options given, which are the first to arrive at a corpse?

a)

Parasitic wasps

b)

Beetles

c)

Blowflies

d)

Flesh flies and house flies

55.

In the life cycle of a flesh-eating beetle or fly, what stage comes after the larva stage?

a)

Egg

b)

Adult

c)

Pupa

d)

Maggot

56.
DNA fingerprinting works because
a)
Most genes are dominant
b)
All organisms contain RNA
c)
The most important genes are different among most people
d)
No two people, except identical twins, have exactly the same DNA 
57.
In DNA, Adenine bonds with ______________.
a)
Guanine
b)
Thymine
c)
Cytosine
d)
Adenine
58.
Based on these results whose blood was found in the blood stain at the crime scene?
a)
Bob
b)
Sue
c)
John
d)
Lisa
59.
If two parents have type AB blood, what is the probability that their child will have type O blood?
a)
0%
b)
25%
c)
50%
d)
100%
60.

What is produced by your body in response to foreign antigens, such as the wrong type of blood?

a)

agglutinates

b)

clotting factors

c)

phagocytes

d)

antibodies

61.

Which of the following is true about blood type O?

a)

It contains antigen A only.

b)

It contains antigen B only.

c)

It contains both antigen A and antigen B.

d)

It doesn’t contain antigen A or antigen B.

62.

What are erythrocythes?

a)

red blood cells

b)

white blood cells

c)

plasma

d)

platelets

63.

Name the proteins on the surface of red blood cells.

a)

Antibodies

b)

Antigens

c)

Plasma

d)

Collagen

64.

Someone with blood type B has B antigens on their RBC's and B antibodies in their plasma.

a)

true

b)

false

65.

What antibodies can be found in the plasma when someone has blood type A?

a)

none

b)

A

c)

B

d)

A and B

66.
Which component of blood is responsible for helping to stop bleeding?
a)
platelets
b)
red blood cells
c)
white blood cells
d)
plasma
67.
What blood spatter pattern is seen in the picture?
a)
Cast Off
b)
Medium Velocity
c)
Void
d)
High Velocity
68.
What type of blood spatter is typically created from a gunshot?
a)
Medium Velocity
b)
High Velocity
c)
Cast-Off
d)
Void
69.
What pattern of blood spatter is this?
a)
arterial gushes
b)
splash
c)
smear
d)
pool
70.
What bloodstain pattern is created when blood is released or thrown from a blood-bearing object?
a)
Cast-Off
b)
Walking Drip
c)
Medium Velocity
d)
Void
71.
What type of pattern is created when blood is blown out of the nose, mouth, or a wound as a result of air pressure?
a)
Expirated blood pattern
b)
Cast - Off Pattern
c)
High Velocity Pattern
d)
Wipe Pattern
72.
What type of blood-spatter creates the smallest blood drops?
a)
Low velocity impact
b)
Medium velocity impact
c)
High velocity impact
73.
The following drops can tell you:
a)
direction 
b)
low impact angle
c)
tails
d)
all of these
74.
The lines in the picture are referred to as lines of ___.
a)
convergence
b)
agreement
c)
tangents
d)
credit
75.
Based upon this picture, what test was done to determine whether or not a stain was blood (the picture shows a positive and negative test). 
a)
Kastle-Meyer presumptive blood test
b)
Leukomalachite green presumptive blood test
c)
Luminol presumptive blood test
76.
What is a bloodstain consisting of a darkened peripheral rim where the center of the stain is no longer intact?
a)
Walking Drip
b)
Wipe
c)
Swipe
d)
Skeletonized
77.

The laboratory process that makes many copies of DNA

a)

PCR

b)

Electrophoresis

c)

Gene Therapy

78.

Wear marks, cuts, gouges and damage to shoes can make the shoe

a)

guilty of the crime

b)

class evicence

c)

individual evidence

d)

useless evidence

79.

Which of the following is NOT a type of tooth?

a)

sharp

b)

incisors

c)

canines

d)

premolars

e)

molars

80.
A shoe impression is left in paint at a crime scene.  What type of impression is this?
a)
Patent
b)
Latent
c)
Plastic
d)
Lasting
81.
What must first be done with impression evidence?
a)
make a cast using plaster or dental stone
b)
cut out the area with the impression
c)
photograph it with a ruler
d)
place the item that made the impression over it to see if it's a match
82.

What can we learn about a person from shoe impressions?

a)

How tall they are

b)

Which direction they were moving

c)

How fast they were moving

d)

All of the above

83.
What factors CANNOT be determined from a car based on impression evidence?
a)
Front and rear track width
b)
Wheelbase measurement
c)
Turning diameter
d)
Person driving the car
84.

The design on the surface of a tire is known as _____________

a)

Ridge pattern

b)

Tread pattern

c)

Tire grooves

d)

Tire impressions

85.

Which type/s of firearm leave 'rifling' marks on spent bullets?

a)

Shotguns only

b)

Rifles only

c)

All guns

d)

Shotguns and rifles

86.

What is diameter of a bullet called?

a)

Caliper

b)

Caliber

c)

Caleb

d)

Width

87.

What is the part of the gun called that brings the cartridge into the firing chamber?

a)

Hammer

b)

Trigger

c)

Extractor

d)

Firing pin

88.

What would you expect of a close range wound?

a)

A very small bullet hole with no GSR

b)

A large wound with GSR and flash burns.

c)

A large wound with no GSR.

d)

A very small bullet hole with flash burns.

89.

You should handle all firearms as if they were loaded.

a)

True

b)

False

90.
A crack in glass that moves outward from the point of impact like spokes on a wheel is called a:
a)
compound fracture
b)
concentric fracture
c)
spoke fracture
d)
radial fracture
91.
The bright halo that appears near the border of a glass particle that is immersed in a liquid of a different refractive index is called the:
a)
border line
b)
refractive line
c)
Becke line
d)
immersion line
92.
The bright halo that appears near the border of a glass particle that is immersed in a liquid of a different refractive index is called the:
a)
border line
b)
refractive line
c)
Becke line
d)
immersion line
93.
A crack in glass that moves outward from the point of impact like spokes on a wheel is called a:
a)
compound fracture
b)
concentric fracture
c)
spoke fracture
d)
radial fracture
94.
Which type of fracture is shown by letter B?
a)
radial
b)
concentric
c)
birefrigent
d)
none of these
95.
Which of these applies to tempered glass?
a)
it is made by rapid heating and cooling
b)
it shatters into oval shaped pebbles
c)
it is used for cookware, tub enclosures, and coffee pots
d)
all of these describe tempered glass
96.
Which type of glass is used to make car windshields?
a)
tempered
b)
laminated
c)
acrylic
d)
standard
97.
In the lab, a Pyrex/borosilicate piece of glass was dipped in vegetable oil and disappeared from view. What does this tell us?
a)
the piece disintegrated in the oil
b)
the oil and the glass had the same refractive index
c)
the oil and the glass chemically reacted
d)
the oil and the glass have different refractive indices
98.
Because glass is a solid with random arrangement of motionless atoms, it is called:
a)
plasma
b)
obtuse
c)
amorphous
d)
frozen
99.

You can tell what side of a glass piece was struck by observing:

a)

the horizontal waves

b)

the right angle rule

c)

the becke lines

d)

the refractive index

100.
Glass evidence is:
a)
class 
b)
individual 
c)
direct
d)
both class and individual
101.
Glass density can be determined by:
a)
dividing the mass in grams of the glass by the water it displaces in mL 
b)
measuring the thickness of the glass with a cm ruler
c)
hitting the glass with a hammer to see the fracture patterns
d)
all of these
102.

Which one came first, A or B?

a)

A

b)

B

c)

no way to tell

d)

occurred at same time

103.

Chain of custody must be maintained

a)

so that the evidence does not have to be examined again.

b)

or the evidence may not be admitted into court

c)

only by the first officer on the scene

d)

only by the forensic scientist who examines the evidence

e)

all of these are true

104.

During what crime scene investigation step is the crime scene isolated and taped off?

a)

Scan the scene

b)

Secure the scene

c)

Secure and collect

d)

Search the scene

105.

How can collusion be prevented at a crime scene?

a)

By determining if the scene is a primary or secondary crime scene

b)

By making sure all evidence is properly packaged and labeled

c)

By separating witnesses to prevent them from creating a story

d)

By having the photography unit take photos of the overall area

106.

A confession is an example of what type of evidence?

a)

Direct

b)

Circumstantial

107.

True/ False: Class evidence is that can be common to a group of persons

a)

True

b)

False

108.
The original location of a crime or accident. 
a)
Primary
b)
Secondary 
c)
Original 
d)
Jail
109.

Which of these is an example of class evidence?

a)

a footwear impression left by a suspect's shoe that has been worn for a year

b)

DNA of the suspect found at the scene

c)

white powder residue on the victim

d)

a torn piece of paper from the scene that matches up (fits together) with a notebook from the suspects house

110.

Correct collection of evidence requires which of the following?

a)

documenting the location where the evidence was found

b)

correct packaging of evidence

c)

maintaining proper chain of custody

d)

all of the above

111.

T or F?: If a crime scene investigator takes photos of a crime scene, it is not necessary to take notes.

a)

true

b)

false

112.
Blood-stained materials should be store in what type of container
a)
paper bags
b)
air-tight new paint can
c)
mason jar with a lid
d)
plastic bag with a seal
113.
"With contact between two items, there will be an exchange." This is known as _____
a)
physical evdience
b)
Locard's exchange principle
c)
Forensic exchange principle
d)
the law of forensics 
114.

The first officer arriving at a crime scene, after providing or obtaining medical assistance for the injured and effecting an arrest of suspects (if possible), should immediately:

a)

photograph the scene.

b)

search for evidence.

c)

make a rough sketch of the scene.

d)

secure the scene.

115.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
116.

What part of blood is 90% water?

a)

White blood cells

b)

Red blood cells

c)

Platelets

d)

Plasma

117.

The angle at which blood strikes the target surface

a)

Angle of impact

b)

Point of origin

c)

Bloodstain transfer

d)

Lines of convergence

118.

Blood that is directed back towards the source of energy (the perpetrator)

a)

Bloodstrain transfer

b)

Backspatter

c)

Cast-off

d)

Angle of impact

119.

The enzyme acid-phosphatase is present in high concentration in which bodily fluid?

a)

Blood

b)

Urine

c)

Saliva

d)

Semen

120.

What is the probability that the child will have type AB blood?

a)

25%

b)

0%

c)

50%

d)

75%

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