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Chapter 11: Bloodstain Analysis Review

Total questions: 38

Worksheet time: 9hrs 47mins

Name
Class
Date
1.
How does the velocity of impact change the blood stain pattern?
a)
Higher velocity, larger diameter
b)
higher velocity, smaller diameter
c)
lower velocity, smaller diameter
d)
Medium velocity, small diameter
2.
Small secondary droplets around the main blood spatter drop are called:
a)
Spikes
b)
Splats
c)
Satellites
d)
Gushes
3.
The drop shown above would have more than likely been dropped from an angle of around
a)
90
b)
50
c)
30
d)
10
4.
What blood spatter pattern is seen in the picture?
a)
Transfer/Contact
b)
Swipe
c)
Wipe
d)
Saturation
5.
What blood spatter pattern is seen in the picture?
a)
Cast Off
b)
Medium Velocity
c)
Void
d)
High Velocity
6.
A blood droplet has a width of 5 mm and a length of 6 mm.  What is the angle of impact?
a)
90 degrees
b)
56 degrees
c)
65 degrees
d)
46 degrees
7.
The protrusions around and connected to the drops are called
a)
radial lines
b)
spines or spikes
c)
blood edges
d)
satellite spatters
8.
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
9.
Which of the following CANNOT be determined from blood spatter?
a)
Exact Weapon Used
b)
Manner of Death
c)
Velocity
d)
Area of Origin
10.
What blood stain pattern is created or formed by the force of gravity acting alone?
a)
Passive Drop
b)
Low Velocity Impact Spatter
c)
Flow Pattern
d)
Drip Pattern
11.
What type of blood spatter is typically created from a gunshot?
a)
Medium Velocity
b)
High Velocity
c)
Cast-Off
d)
Void
12.
What would cause medium velocity blood spatter?
a)
Baseball bat
b)
Human hand
c)
Hand grenade
d)
Gunshot
13.
What would cause low velocity blood spatter?
a)
Baseball bat
b)
Gun shot
c)
Hand grenade
d)
Gravity
14.
What type of surface did this blood most likely fall on?
a)
Semi-porous surface
b)
Smooth surface
c)
Carpet
d)
Rough surface
15.
Which of the following does NOT affect blood stain shape?
a)
Texture of target surface
b)
Size of droplet
c)
Speed at which the blood left the original surface 
d)
Blood type
16.

The lines in the picture are illustrate the points/lines of ___.

a)

convergence

b)

agreement

c)

tangents

d)

credit

17.
The following indicates:
a)
cast off
b)
walking drip
c)
splash
d)
medium velocity impact 
18.

The _______________ function is used at crime-scenes to determine the angle of impact.

a)

Sine

b)

Tangent

c)

Sin-1

d)

Cosine

19.

As the angle of impact gets smaller, what happens to the tail?

a)

Gets longer

b)

Gets shorter

c)

Stays the same

20.

When crime scene investigations trace all the angles back to one location, they refer to this as..

a)

the area of convergance

b)

the origin story

c)

diameter of the blood drops

21.
What blood spatter pattern is seen in the photo?
a)
Wipe
b)
Swipe
c)
Walking Drip
d)
Flow
22.
From what angle was this blood most likely dropped?
a)
90°
b)
70°
c)
30°
d)
10°
23.

The following drops can tell you:

a)

direction

b)

low impact angle

c)

velocity of travel

d)

all of these

24.
Which letter best shows the convergence point (origin point)?
a)
A
b)
B
c)
C
d)
D
25.
Used by investigators to detect the presence of blood
a)
luminol
b)
LCV
c)
BPA
d)
hemoglobin
26.

Which type of spatter pattern is shown?

a)

transfer

b)

void

c)

arterial spatter

d)

altered spatter

27.

How is blood evidence packaged?

a)

plastic

b)

paper

c)

sealed container

d)

all of these are acceptable

28.
Bloodstain created by the application of force to the area where the blood originated
a)
Spatter
b)
Projected Blood Stain
c)
Spine
d)
Transfer
29.
Pattern created when a bloody object comes in contact with another surface--also called contact patterns
a)
Spatter
b)
Transfer
c)
Spines
d)
BPA
30.

A medium-velocity sized blood spatter (1 to 4 mm) like the one shown could be caused by a...

a)

Gun shot wound to the head

b)

A paper cut

c)

A pus and blood filled zit

d)

Being beat with a lead pipe

31.

What information cannot be gathered from a "Void" in a bloodstain at a crime scene?

a)

Age of the victim

b)

How close a victim was to a wall

c)

Whether any objects could be missing

d)

Whether a person was sitting, standing or kneeling with shot

32.

The _____________________ function is used at crime scenes to determine the area of origin.

a)

sine

b)

inverse sine (sin-1)

c)

tangent

d)

cosine

33.

A drop of blood that strikes a surface at an angle of impact of approximately 90 degrees will be close to _________________ in shape.

a)

Elongated

b)

Eliptical

c)

Tear Dropped

d)

Circular

34.

Impact spatter is classified based on the size of the droplets resulting from the velocity of the blood. Patterns can be classified as ___________, _______________, or _________________ impact spatter.

a)

Small, Medium, Large

b)

Low Blow, Medium Blow, High Blow

c)

Circular, Eliptical, Elongated

d)

Low Velocity, Medium Velocity, High Velocity

35.

A woman claims that she stabbed a man when he tried to rob her. She said she punctured his shoulder and he ran out of her kitchen, into the living room and out the front door. Is she telling the truth?

a)

Yes, he went from the kitchen to the living room.

b)

No, he went from the living room to the kitchen.

c)

No, he went from the kitchen to the living room.

d)

Yes, he went from the living room to the kitchen.

36.

What is a bloodstain consisting of a darkened peripheral rim where the center of the stain is no longer intact?

a)

Wipe

b)

Swipe

c)

Skeletonized

d)

Walking Drips

37.

A blood droplet with a width of 6 mm and a length of 12 mm that is 48 inches from the area of convergence was dropped from a height of:

a)

30 inches

b)

28 inches

c)

.5 inches

d)

96 inches

38.

Blood that is blown out of nose/mouth as a result of air pressure, similar to high velocity blood spatter.

a)

Arterial spurt

b)

Cast-off

c)

Swipe

d)

Expirated

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