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Forensic Evidence Review Game

Total questions: 75

Worksheet time: 43mins

Name
Class
Date
1.

What is rifling?

a)

the markings made on a bullet as it move through the gun barrel

b)

the grooves in a gun's barrel that impart spin on the bullet

c)

the size of the barrel

d)

the markings made on the back of the cartridge casing

2.

How can rifling be used to solve a crime?

a)

match it to a person's fingerprint

b)

determine the direction the bullet came from

c)

use the striations on the bullet to match to a certain gun

d)

all of the above

3.

Define ballistics

a)

the study of weapons

b)

the study of projectiles

c)

the study of firearms only

d)

the study of OG ballers

4.

What does caliber refer to?

a)

the size of a bullet

b)

the size of a gun

c)

the distance a bullet travels

d)

the gun manufacturer

5.

Define the acronym GSR.

a)

Gun Shot Reflex

b)

Gun Shot Retirement

c)

Gun Shot Reading

d)

Gun Shot Residue

6.

How can GSR assist investigators with a crime?

a)

identifies the gun that was used

b)

approximates the distance between the victim and suspect

c)

identifies the fingerprints on the gun

d)

determines who may have shot the gun

7.

cortex

a)

the region of hair located outside of the medulla containing granules of pigments

b)

material that connects an individual or thing to a certain group

c)

a type of fibrous protein that makes up the majority of the cortex of a hair

d)

the tough outer covering of a hair composed of overlapping scales

8.

cuticle

a)

the central core of a hair fiber

b)

material that connects an indivisual or thing to a certain group

c)

a type of fibrous protein that makes up the majority of the cortex of a hair

d)

the tough outer covering of a hair composed of overlapping scales

9.

hair follicle

a)

the actively growing root or base of hair containing DNA and living cells

b)

material that connects an individual or thing to a certain group

c)

a type of fibrous protein that makes up the majority of the cortex of a hair

d)

the tough outer covering of a hair composed of overlapping scales

10.

individual evidence

a)

bits of pigment found in the cortex of a hair

b)

a kind of evidence that identifies a particular person or thing

c)

small but measurable amounts of physical or biological material found at crime scene

d)

the actively growing root or base of hair containing DNA and living cells

11.
medulla
a)

the central core of a hair fiber

b)
bits of pigment found in the cortex of a hair
c)
the actively growing root or base of hair containing DNA and living cells
d)
the region of hair located outside of the medulla containing granules of pigments
12.
The protein that makes up hair is called _____
a)
ninhydrin
b)
pigments 
c)
medulla
d)
keratin
13.

To determine the medullary index, you would ______.

a)

measure the diameter of the medulla and divide it by the diameter of the hair

b)

measure the diameter of the hair and add it to the diameter of the medulla

c)

measure the length of the medulla and divide it by the length of the hair

d)

measure the diameter of the medulla and multiply it by the diameter of the cortex

14.

hair shaft

a)

the actively growing root or base of hair containing DNA and living cells

b)

part of the hair above the follicle, contains mitochondrial DNA

c)

a type of fibrous protein that makes up the majority of the cortex of a hair

d)

the tough outer covering of a hair composed of overlapping scales

15.

The smallest unit of textile

a)

keratin

b)

cuticles

c)

fibers

d)

chromatography

16.
The name for man-made fibers is:
a)
processed fibers
b)
synthetic fibers
c)
natural fibers
d)
modified fibers
17.
What is the medullary index for a human hair?
a)
generally less than 1/3
b)
generally equal to 1/3
c)
generally more than 1/3
d)
generally greater than 1/2
18.
When collecting hair as evidence, a detective should NOT do which of the following?
a)
Pluck hairs from the suspect’s head
b)
Cut hairs from the suspect’s head
c)
Collect loose hairs from the suspect’s head
d)
A detective should do all of the above
19.
When fibers are transferred directly from victim to suspect or suspect to victim, this is called:
a)
necessary transfer.
b)
direct transfer
c)
absolute transfer.
d)
None of these choices.
20.
Fibers are classified as either:
a)
natural fibers or synthetic fibers.
b)
polymers or synthetic fibers.
c)
acrylic fibers or plant fibers.
d)
olefins or synthetic fibers
21.
Natural fibers come from:
a)
animals.
b)
plants.
c)
minerals that are mined from the ground.
d)
All of these choices.
22.

the transfer of evidence such as a fiber from a source to a person, and then to another person.

a)

direct transfer

b)

secondary evidence

c)

primary transfer

d)

secondary transfer

23.

a flexible, flat material made by interlacing yarns.

a)

yarn

b)

textile

c)

filaments

d)

fibers

24.

60-65% of the population has this type of fingerprint pattern

a)
loops
b)
whorls
c)
arches
d)
ripples
25.

30-35% of the population has this type of fingerprint pattern

a)
loops
b)
whorls
c)
arches
d)
ripples
26.

5% of the population has this type of fingerprint pattern

a)
loops
b)
whorls
c)
arches
d)
ripples
27.

classify this print

a)

whorl

b)

ulnar loop

c)

arch

d)

radial loop

28.

Classify this print

a)

whorl

b)

loop

c)

arch

29.

Classify this print

a)

whorl

b)

loop

c)

arch

30.

Classify this print

a)

arch

b)

whorl

c)

loop

31.

invisible prints left by body secretions

a)

latent

b)

impressionist

c)

patent

d)

plastic

32.
Fingerprints in blood, dirt, mud, etc.
a)
latent
b)
impressionist
c)
patent
d)
plastic
33.

3-D prints left in a soft material, such as wax or clay.

a)
latent
b)

loops

c)
patent
d)
plastic
34.

Which chemical adheres to the oil secretions from a finger to create a permanent white fingerprint?

a)

cyanoacrylate

b)

ninhydrin

c)

iodine fuming

d)

methane

35.

Which suspect should be charged with the crime?

a)

Suspect 1

b)

Suspect 2

c)

Suspect 3

d)

None of these suspects

36.

Biological evidence is used in forensics for DNA identification purposes. Biological evidence includes ...

a)

blood

b)

saliva

c)

urine

d)

all of these

37.
Restriction Enzymes . . . 
a)
cut DNA at precise locations
b)
help bacteria to pick up DNA
c)
move DNA through a gel
d)
copy DNA
38.

Collection of DNA fragments that can be used to identify genetically unique individuals

a)

Amplify

b)

DNA Ladder

c)

DNA Fingerprint

d)

DNA Analysis

39.
Bob was found dead in his home.  Crime scene analysis showed signs of a struggle.  Blood was collected from the crime scene, the victim, and three suspects.  Which suspect likely committed the crime? 
a)
Sue
b)
Lisa
c)
John
d)
None of these
40.
Which suspect is likely guilty?
a)
Suspect #1
b)
Suspect #2
c)
Suspect #3
41.
Which suspect’s DNA matches the felon’s DNA left at the crime scene?
a)
Suspect 1
b)
Suspect 2
c)
Suspect 3
42.

Except for identical twins, no two people on earth have the same:

a)

physical characteristics.

b)

DNA.

c)

skeletal type.

d)

blood group.

43.
Which model of base pairing is correct?
a)
A=T and C=G
b)
A=T=C=G
c)
A+T and G+C
d)
A=G and T=C
44.
If base-pairing rules state that Adenine always pairs with Thymine, and Cytosine pairs with Guanine, what would be the complementary strand to ACGGT?
a)
ACGGT
b)
TGGCA
c)
TGCCA
d)
ACCGT
45.
The computerized database used to store DNA information is: 
a)
AFIS
b)
NIBIN
c)
CODIS
d)
PDQ
46.

These are found in blood and help fight infections...

a)

white blood cells

b)

platelets

c)

plasma

d)

red blood cells

47.

These are found in blood and help the blood to clot...

a)

white blood cells

b)

platelets

c)

plasma

d)

red blood cells

48.

Someone with both Anti-A & Anti-B antibodies in their blood plasma is which blood type?

a)

A

b)

B

c)

AB

d)

O

49.
What blood type is the "universal donor" because it can be donated to anyone?
a)
A
b)
B
c)
AB
d)
O
50.

What blood stain pattern is created or formed by the force of gravity acting alone?

a)

passive drop

b)

medium velocity impact spatter

c)

swipe

d)

cast off

51.

What blood spatter pattern is seen in the picture?

a)

wipe

b)

cast off

c)

transfer

d)

arterial spurt

52.

What type of blood spatter is typically created from a gunshot?

a)

medium velocity impact spatter

b)

high velocity impact spatter

c)

cast off

d)

void

53.

The drop shown would have more than likely been dropped from an angle of ____.

a)

90

b)

50

c)

30

d)

10

54.

The following drops can tell you:

a)

direction of travel

b)

weapon used

c)

age of drop

d)

source of blood

55.

What pattern of blood spatter is this?

a)

cast off

b)

back spatter

c)

passive drip

d)

arterial spurt

56.

What would cause medium velocity blood spatter?

a)

baseball bat

b)

human hand

c)

grenade

d)

gunshot

57.

Which letter best shows the origin of the blood?

a)

A

b)

B

c)

C

d)

D

58.

What bloodstain pattern is created when blood is released or thrown from a blood-bearing object?

a)

high velocity impact spatter

b)

walking drip

c)

void

d)

cast off

59.

Identify this blood type

a)

A -

b)

A+

c)

O+

d)

AB+

60.
What shape does a blood drop remain in until it hits a surface?
a)
Sphere
b)
Teardrop
c)
Oval
d)
Cube
61.

Which test would be considered a presumptive test for blood?

a)

DNA fingerprinting

b)

cyanoacrylate

c)
Luminol
d)

electrophoresis

62.

a type of chemical reaction whereby a fuel reacts with oxygen to release energy.

a)

pyrolysis

b)

combustion

c)

fire

d)

electrophoresis

63.

What sustains a fire?

a)

Oxygen

b)

Heat

c)

Fuel

d)

Chain Reaction

e)

All of these

64.
What is the difference between a bullet and a cartridge?
a)
the bullet is the projectile, while the cartridge holds the bullet, powder, and primer
b)
the cartridge is the projectile, while the bullet holds the cartridge, powder, and primer
c)
they are the same thing
d)
a bullet is larger and used more frequently than a cartridge
65.

Which of these databases is used by firearms investigators to compare ballistic evidence?

a)

NIBIN

b)
AFIS
c)
CODIS
d)
NCIC
66.

What is the vertical thread count of this fabric?

a)

9

b)

7

c)

8

d)

16

67.

A hair is retrieved from a victim's clothing and sent to the lab for analysis. The width of the medulla measures 45 microns and the diameter of the hair shaft measures 120 microns. What is the medullary index of this hair sample?

a)

75

b)

2.67

c)

165

d)

.37

68.

What weave pattern is represented here?

a)

basket weave

b)

satin

c)

twill

d)

plain weave

69.

What part of the fingerprint is circled in red?

a)

loop

b)

whorl

c)

core

d)

delta

70.

The fingerprint patterns that examiners use to determine a match

a)

minutiae

b)

deltas

c)

thread count

d)

DNA profile

71.

Calculate the angle of impact for a blood stain that measures 2 mm in length and 1.5 mm in width.

a)

180 degrees

b)

1.3 degrees

c)

49 degrees

d)

.75 degrees

72.

What is the fastest that a passive blood drop can travel?

a)

25 ft/sec

b)

100 ft/sec

c)

5 ft/sec

d)

35 ft/sec

73.

What pattern will the typical fire make?

a)

X

b)

K

c)

Y

d)

V

74.

Which is a classification of fires?

a)

deliberate

b)

accidental

c)

undetermined

d)

all of the above

75.

What is the #1 reason behind arson crimes?

a)

pyromania

b)

insurance fraud

c)

crime concealment

d)

revenge

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