Terminology

Question 1

Accompanying Drop

Answer 1

A small blood drop produced as a by-product of drop formation

Question 2

Altered Stain

Answer 2

A bloodstain with characteristics that indicate a physical change has occurred

Question 3

Angle of impact

Answer 3

The acute angle (alpha), relative to the plane of a target, at which a blood drop strikes the target

Question 4

Area of Convergence

Answer 4

The area containing the intersections generated by lines drawn through the long axes of individual stains that indicates in two dimensions the location of the blood source

Question 5

Area of Orgin

Answer 5

The three dimensional location from which seater originated

Question 6

Blood spatter pattern

Answer 6

A bloodstain pattern resulting from blood drops that traveled in the opposite direction of the external force applied; associated with an entrance wound created by a projectile

Question 7

Blood clot

Answer 7

A gelatinous mass formed by a complex mechanism involving red blood cells, fibrinogen, platelets, and other clotting factors

Question 8

Bloodstain

Answer 8

A deposit of blood on a surface

Question 9

Bloodstain pattern

Answer 9

A grouping or distribution of bloodstains that indicates through regular or repetitive form, order, or arrangement the manner in which the pattern is deposited

Question 10

Bubble ring

Answer 10

An outline within a bloodstain resulting from air in the blood

Question 11

Cast-off Pattern

Answer 11

A bloodstain pattern resulting from blood drops released from an object due to its motion

Question 12

Cessation Cast-off Pattern

Answer 12

A bloodstain pattern resulting from blood drops released from an object due to its rapid deceleration

Question 13

Directionality

Answer 13

The characteristic of a bloodstain that indicates the direction blood was moving at the time of deposition

Question 14

Directional Angle

Answer 14

The angle (gamma) between the long axis of spatter stain target and a defined reference line on the target

Question 15

Drip Pattern

Answer 15

A bloodstain pattern resulting from a liquid that dropped into another liquid, at least one of which was blood

Question 16

Drip Stain

Answer 16

A bloodstain resulting from a falling drop that formed due to gravity

Question 17

Drip Trail

Answer 17

A bloodstain pattern resulting from the movement of a source of drip stains between two points

Question 18

Edge Characteristic

Answer 18

A physical feature of the periphery of a bloodstain

Question 19

Expiration Pattern

Answer 19

A bloodstain pattern resulting from blood forced by airflow out of the nose, mouth or wound

Question 20

Flow Pattern

Answer 20

A bloodstain pattern resulting from the movement of a volume of blood on a surface due to gravity or movement of the target

Question 21

Forward Spatter Pattern

Answer 21

A bloodstain pattern resulting from blood drops that traveled in the same direction as the impact force

Question 22

Impact Pattern

Answer 22

A bloodstain pattern resulting from an object striking liquid blood

Question 23

Insect Pattern

Answer 23

A bloodstain resulting from insect activity

Question 24

Mist Pattern

Answer 24

A bloodstain pattern resulting from blood reduced to a spray of micro-drops as a result of the force applied

Question 25

Parent Stain

Answer 25

A bloodstain from which a satellite stain originated

Question 26

Perimeter Stain

Answer 26

An altered stain that consists of the peripheral characteristics of the original stain

Question 27

Pool

Answer 27

A bloodstain resulting from an accumulation of liquid blood on a surface

Question 28

Projected Pattern

Answer 28

A bloodstain pattern resulting from the ejection of a volume of blood under pressure

Question 29

Satellite Stain

Answer 29

A smaller bloodstain that originated during formation of the parent stain as a result of blood impacting a surface

Question 30

Saturation Stain

Answer 30

The stain resulting from the accumulation of liquid blood in an absorbent material

Question 31

Serum Stain

Answer 31

The stain resulting from the liquid portion of blood (serum) that separates during coagulation

Question 32

Spatter Stain

Answer 32

A bloodstain resulting from a blood drop dispersed through the air due to an external force applied to a source of liquid blood

Question 33

Splash Pattern

Answer 33

A bloodstain pattern resulting from a volume of liquid blood that falls or spills onto a surface

Question 34

Swipe Pattern

Answer 34

A bloodstain pattern resulting from the transfer of blood from a blood-bearing surface onto another surface, with characteristics that indicate relative motion between the two surfaces

Question 35

Target

Answer 35

A surface onto which blood has been deposited

Question 36

Transfer stain

Answer 36

A bloodstain resulting from contact between a blood-bearing surface and another surface

Question 37

Void

Answer 37

An absence of blood in an otherwise continuous bloodstain or blood pattern

Question 38

Wipe Pattern

Answer 38

An altered bloodstain pattern resulting from an object moving through a preexisting wet bloodstain