Unit 7: Imprints and Impressions Practice Flashcards

A set of practice flashcards covering fingerprint identification, ballistics measurements, and impression evidence based on the Unit 7 Jeopardy review.

Arch

A specific type of fingerprint pattern.

Loop

A common type of fingerprint pattern.

Double loop

A subcategory of the whorl fingerprint type.

Accidental

A subcategory of the whorl fingerprint type.

Ulnar

The subcategory of a loop fingerprint coming from a right hand.

Latent fingerprints

Prints most likely to be found on smooth surfaces.

Imprint

A type of 2D mark such as a latent fingerprint.

$$2D$$

The dimensional representation of an imprint.

$$3D$$

The dimensional representation of an impression.

$$9/2$$

The Henry classification number for an individual with whorls on their right ring and left ring fingers.

Left middle, left little, right little

The fingers that have whorls if a person has a specific score in Henry classification.

Unknown hand origin

The reason why it is impossible to distinguish between an ulnar loop and a radial loop in a crime scene print.

Caliber

A measurement of the barrel diameter on a gun.

Barrel Diameter

The physical dimension measured to determine the caliber of a firearm.

NIBIN

The national database used to compare bullets.

Bullet cartridge

A components list including the bullet, propenlent (gunpowder), primer, and bullet case.

Propenlent

Another term for gunpowder found inside a bullet cartridge.

Primer

One of the four components of a bullet cartridge.

Bullet case

The container component of a bullet cartridge.

$$15.43$$

The number of grains in $1$ gram.

$96.59$ grains

The weight of a bullet that weighs $6.26$ grams.

$0.0394$ inches

The equivalent measurement of $1\,mm$ in inches.

$0.355$ inches

The diameter of a bullet that measures $9.00\,mm$ in diameter.

Impression

A type of evidence that is $3D$; examples include marks in soft earth.

Photography and casting

The methods used to best preserve shoe and tire marks impressed into soft earth.

Bite Mark

The type of evidence most important in convicting Ted Bundy.

Ted Bundy

The criminal whose sexual assault convictions relied heavily on bite mark evidence.

Tool marks

One of the examples of impression evidence.

Shoe prints

An example of impression evidence often found in soft earth.

Tire tracks

Commonly found impression evidence at a crime scene alongside footwear.

Fired bullets

A specific type of ballistic evidence categorized as impression evidence.

Footwear and tire tracks

The most common types of impression evidence found at a crime scene.

Lands

The raised areas between the grooves in a fired bullet.

Comparison Microscope

The tool used by ballistics experts to compare striations on fired bullets.

Striations

The marks on fired bullets compared using a comparison microscope.

Lake

A specific fingerprint minutia feature shown in identification training.

Ridge ending

A specific fingerprint minutia where a ridge terminally stops.

Marcus Morris

The individual who stole the equipment in the training mode of the fingerprinting gizmo.

Fingerprinting gizmo

The simulation tool used to identify who stole equipment in training mode.

$$.40\,S\&W$$

The caliber of a bullet that measures $10.15\,mm$ in diameter and weighs $10.7\,grams$.

$$10.15\,mm$$

The diameter measurement used in the Final Jeopardy caliber calculation.

$$10.7\,grams$$

The weight measurement used in the Final Jeopardy caliber calculation.

Unit 7

The unit covering Imprints and Impressions.

Grooves

The low areas between lands in a fired bullet.

Smooth surfaces

The specific environment where latent fingerprints are most likely found.

Soft earth

The substance into which shoe and tire marks are impressed that requires casting.

Whorl

The general category for accidental and double loop patterns.

$$6.26\,grams$$

The weight of a bullet converted to $96.59$ grains in the ballistics topic.

$$9.00\,mm$$

The millimeter diameter converted to $0.355$ inches in the ballistics topic.

Radial loop

A loop pattern direction that cannot be confirmed without knowing which hand the print is from.

Gunpowder

The common name for the propenlent found in a cartridge.

Right ring finger

The finger utilized in Topic 2 to calculate a Henry classification of $9/2$.

Left ring finger

The second finger utilized in Topic 2 to calculate a Henry classification of $9/2$.

Fingerprint ID

Topic 1 of the Jeopardy board focusing on identifying print types.

Ballistics

Topic 3 of the Jeopardy board focusing on caliber, NIBIN, and cartridges.