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Ballistics and Tool Marks Evidence

Total questions: 73

Worksheet time: 1hrs 23mins

Name
Class
Date
1.

The #1 priority of impressions is to preserve it by first

a)

cleaning the area

b)

taking photographs

c)

waxing the impression

d)

clearing out the people

2.
Why should an investigator not try to put the tool into the tool mark at the crime scene
a)
it will destroy the toolmark evidence that is there
b)
it will leave new evidence behind covering up the original
c)
contamination of the evidence
d)
all of these
3.
What type of tool mark is the result of the tool pressured into a soft surface?
a)
Abrasion
b)
Cut
c)
Indentation
d)
Patent
4.

A tool marks left at a crime scene would be considered.

a)

Circumstantial Evidence

b)

Direct Evidence

5.

The study of bullets and firearms is called

a)

serology

b)

Ballistics

c)

DNA Technology

d)

Firearms

6.

Which term accurately describes the part of the gun labeled F

a)

Gun Barrel

b)

Trigger Guard

c)

Action

d)

Trigger

7.

Ballistics can match a bullet to the gun that fired it.

a)

True

b)

False

8.
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
9.
What is the best description of caliber?
a)
The length of the cartridge
b)
The diameter of the bullet
c)
The length of the bullet
d)
The diameter of the cartridge
10.
What is #2 pointing to?
a)
Primer
b)
Firing Pin
c)
Flash Hole
d)
Gun Powder
11.
What is #4 pointing to?
a)
Cartridge Case
b)
Firing Pin
c)
Bullet
d)
Gun Powder
12.

Sample X was found in a parking lot of a club shooting. Samples A1 - A4 are examplar shootings collected from suspect weapons. Which gun most likely fired the bullet found at a crime scene?

a)

A1

b)

A2

c)

A3

d)

A4

13.

Which of the following can be solved from analyzing Gun Shot Residue?

a)

the type of gun the bullet came from

b)

The distance between the weapon and the victim

c)

the type of bullet the gun shot

d)

The time the gun was shot

14.

Gun barrel marking left on a spent bullet are called

a)

striations

b)

linear markings

c)

bullet fingerprints

15.

In the picture, the part that passes through the gun barrel is

a)

primer

b)

casing

c)

bullet and casing

d)

bullet

16.
In the picture, which side of the hand is the exit wound?
a)
Top of hand
b)
Palm
c)
Impossible to tell
17.

The following image is a striation analysis from a crime committed in Macon, GA. The left side of the image is the striation marks from the bullet fired from the crime scene, the right side of the image is the striation marks from a bullet shot from the suspects gun. Is this person’s gun a match for the crime?

a)

yes

b)

no

18.

What does the spinning of the bullet improve?

a)

balance

b)

power

c)

accuracy

d)

speed

19.
Which of these databases is used by firearms investigators?
a)
IBIS
b)
AFIS
c)
CODIS
d)
NCIC
20.
Forensic Scientists compare bullets from...
a)
A Crime Scene bullet only
b)
A test bullet only
c)
A test bullet and a crime scene bullet
d)
None of the
21.
How can you tell that this bullet has not been fired?
a)
the primer is not dented
b)
the primer is dented
c)
there are no striations
d)
the letters are still visible
22.
What tells you that this bullet has been fired?
a)
the shape
b)
the striations
c)
the type of material
d)
the shine
23.

Define Trajectory

a)

The flight path of a projectile

b)

Flight path of a bird

c)

The trigger of a gun

d)

The casing of a bullet

24.

What part of the cartridge is the arrow pointing to?

a)

Casing

b)

Primer

c)

Bullet

d)

Gun Powder

25.

True or False: When the trigger of a weapon is pulled, the firing pin hits the bullet and ignites the gunpowder that projects the casing forward through the barrel of the gun.

a)

True

b)

False

26.

 

Which of the following weapons would NOT be considered a long gun?

a)

Rifle

b)

Revolver

c)

Shot gun

27.

The markings on a bullet/projectile that are unique to each weapon are called _____.

a)

Breech marks

b)

Firing pin markings

c)

Striations

d)

Lands and Grooves

28.

True or False: It is possible to test positive for GSR even if one has never touched a weapon.

a)

True

b)

False

29.

Which of the following CANNOT be determined with ballistics?

a)

Who fired the weapon

b)

Location of the shooter

c)

DNA of the shooter

d)

Weapon used in the crime

30.

Which of the following best describes the trajectory of a projectile?

a)

The height of the shooter

b)

The pattern of the lands and grooves on the bullet

c)

The housing for the cartridge’s gunpowder

d)

The path and flight of the bullet

31.

Shotguns are examples of ______.

a)

Handguns

b)

Long guns

c)

Revolvers

d)

Semiautomatic

32.

Ballistics is the study of _______and __________

a)

Bullets and Firearms

b)

Long guns and short guns

c)

striation marks

d)

guns and explosions

33.

What does GSR stand for?

a)

Glock safety rounds

b)

Gun shot residue

c)

Gravity semiautomatic revolver

34.

The intact bullet, casing with packed gun powder, and primer before being discharged is known as

a)

slug

b)

clip

c)

cartridge

d)

magazine

35.
Why was rifling added to the barrels of guns?
a)
To make bullets shoot straighter
b)
To make bullets traceable at crime scenes
c)
To make bullets go faster
d)
To cause bullets to separate from the cartridge
36.

Why is rifling important for forensic ballistic analysis?

a)

It spins the bullet, making it more accurate.

b)

It makes the bullet travel farther before losing accuracy/

c)

It can be found in all firearms.

d)

It makes indentations on the bullet that are unique to the firearm.

37.
Where are breech marks left?
a)
On the top of the cartridge
b)
On the bottom of the cartridge
c)
On the top of the bullet
d)
On the bottom of the bullet
38.

What is happening to the bullet in the picture:

a)

Striations

b)

Extractor Marks

c)

Mushrooming

d)

Ejector Marks

39.

Define Striations

a)

marks made as the cartridge is removed from the chamber

b)

marking from a firing pin on the cartridge

c)

scratch marks left on the projectile by rifling lines of the inside of the barrel

d)

Marks or scratches made when the cartridge is placed into the chamber

40.

What piece of equipment is used to match bullet striations up?

a)

Comparison microscope

b)

Electron microscope

c)

Light microscope

d)

Proton microscope

41.

What are the two main categories of guns?

a)

pistol and rifles

b)

long guns and handguns

c)

automatic and semi-automatic

d)

bullet-firing and shot-firing

42.

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.

43.
A 40 caliber gun means
a)
the gun is 40 inches long
b)
the gun barrel is 4 inches wide
c)
it holds 40 bullets
d)
the barrel diameter is 0.40 inches
44.

What type of gun is this?

a)

pistol

b)

revolver

c)

shotgun

d)

rifle

45.

What type of gun is this?

a)

pistol

b)

revolver

c)

shotgun

d)

rifle

46.

What type of gun would this type of cartridge be compatible with?

a)

pistol

b)

shotgun

c)

rifle

47.
What caused the bullet to move from the chamber into the barrel?
a)
Pressure from the expanding gun powder
b)
Firing pin pushes it down the barrel
c)
The trigger manually moves the bullet into the barrel
d)
Pressure from the ignited primer powder
48.

Place the steps of a firearm in order from beginning to end

1) The pressure of the ignition pushes the bullet from the casing and into the barrel of the firearm

2) The bullet follows the lands and groves pattern of the barrel and spirals out of the barrel

3) The trigger is pulled and firing pin from the firearm hits the base of the cartridge, igniting the powder inside the bullet

a)

1,2,3

b)

3,2,1

c)

2,1,3

d)

3,1,2

49.

Which of the following is not a part of ballistics?

a)

Shotgun

b)

Revolver

c)

Slingshot

d)

Pistol

50.
7. Rifles fire bullets, while shotfuns can fire:
a)
either small round pellets or a single projectile, called a slug.
b)
either small, round pellets or shot.
c)
only small, round pellets.
d)
only a slug.
51.

What is the definition of ABRASION MARK?

a)

a mark produced when a surface slides across another

b)

a mark produced along the edge as a surface is cut

52.

What is the definition of CUTTING MARK?

a)

an impression, scratch, or abrasion when contact occurs between two objects

b)

a mark produced along the edge as a surface is cut

53.

What is the definition of INDENTATION MARK?

a)

a mark produced when a surface slides across another surface

b)

a mark or impression made by a tool on a softer surface

54.

What is the definition of TOOL MARK?

a)

any impression, scratch, or abrasion made when contact occurs between a tool and another object

b)

a mark produced along the edge as a surface is cut

55.

TRUE or FALSE:

Tool mark evidence should NOT be photographed, documented, collected, and/or casted.

a)

TRUE

b)

FALSE

56.

TRUE or FALSE:

Tools have major and minor surface differences that can help identify one tool impression from another.

a)

TRUE

b)

FALSE

57.

TRUE or FALSE:

Tool marks are categorized into one of 4 categories: indentations marks, abrasion marks, cutting marks, and casting marks.

a)

TRUE

b)

FALSE

58.

TRUE or FALSE:

Advancing technology for distinguishing tool marks is helping forensic experts help the courts fight crime and find criminals.

a)

TRUE

b)

FALSE

59.

Why should an investigator not try to put the tool into the tool mark at the crime scene?

a)

it could destroy the tool mark evidence that is there

b)

it could leave new evidence behind covering up the original

c)

it could be questioned in court and excluded as evidence

d)
all of these
60.

What is the first step of processing any kind of evidence?

a)

Casting

b)

Photographing

c)

Dusting

d)

Lifting

61.

Which of the following represents the picture?

a)

Indentation Mark

b)

Abrasion Mark

c)

Cutting Mark

62.

Which of the following represents the picture?

a)

Indentation Mark

b)

Abrasion Mark

c)

Cutting Mark

63.

Which of the following represents the picture?

a)

Indentation Mark

b)

Abrasion Mark

c)

Cutting Mark

64.

Which of the following represents the picture?

a)

Indentation Mark

b)

Abrasion Mark

c)

Cutting Mark

65.

How are tool marks formed?

a)

When a harder tool scratches a softer surface

b)

When a soft tool leaves residue on a hard surface

c)

When a tool is pressed into concrete

d)

When two tools are used together

66.

Which factor does NOT influence the creation of a tool mark?

a)

The shape and sharpness of the tool

b)

The type of tool used

c)

The person’s fingerprint on the tool

d)

The amount of force applied

67.

Why is it important to take high-resolution photos of tool marks at crime scenes?

a)

To capture the detail of each tool mark for analysis

b)

To add more photos to the crime scene report

c)

To prevent casting of the marks

d)

To ensure the evidence is kept secret

68.

What is casting in relation to preserving tool marks?

a)

Taking photos of the tool mark

b)

Lifting the tool mark with adhesive tape

c)

Creating a replica of the tool mark using materials like silicone or rubber

d)

Scratching the surface to see if a mark is permanent

69.

How can tool marks help link a suspect to a crime scene?

a)

By identifying the type of tool used

b)

By matching the unique patterns of a tool mark to a specific tool found with the suspect

c)

By analyzing the suspect’s fingerprints on the tool

d)

By determining the brand of the tool

70.

Striation marks are created when:

a)

A tool is pressed into a soft material without movement.

b)

A tool moves across a surface, leaving scratch-like patterns.

c)

A tool is used to break a surface completely.

d)

A soft object moves over a harder surface.

71.

Which of the following best describes an impression mark?

a)

A deep scratch left by a sharp object.

b)

A flat, smooth area created by heavy impact.

c)

An indentation left when a tool presses into a softer material.

d)

A faint, temporary mark left by fingerprints.

72.

Which of the following materials is commonly used to cast tool marks?

a)

Wax

b)

Glue

c)

Silicone

d)

Paint

73.

Why might an investigator cast a tool mark instead of photographing it alone?

a)

Photographs can fade over time.

b)

A cast provides a three-dimensional replica that can show depth and detail.

c)

Casts are easier to store than photographs.

d)

Casting takes less time than photographing.

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