Blood Spatter Evidence – Flashcards
Unlock all answers in this set
Unlock answersquestion
Instruments that measure the height of a cloud's base above the ground are called ceilometers(T/F)
answer
T
question
Angle of Impact
answer
the acute angle formed between the direction of a blood drop and the plane of the surface it strikes
question
Arterial Spurting
answer
blood pattern(s) resulting from blood exiting the body of under pressure from a breached artery
question
Back Sputter
answer
blood directed back toward the source of energy or force that caused the spatter
question
Blood Spatter Analysis
answer
field of forensic science that deals with physical properties of blood and the patterns produces under different conditions as a result of various forces applied to the source of blood
question
Bloodstain
answer
evidence that liquid blood has come into contact with a surface
question
Cast Off Pattern
answer
a bloodstain pattern created when blood is thrown from a moving blood bearing object
question
Contact Stain
answer
blood deposited from direct contact between two surfaces, at least one of which is blood
question
Direction of Flight
answer
the trajectory of a blood drop, which can be established by its angle of impact and directionality angle
question
Directionality
answer
the direction the blood was traveling when it hit the target surface; established from the geometric shape of a bloodstain
question
Directionality Angle
answer
the angle between the long axis of a bloodstain and a predetermined line on the plane of the target surface that represents 0 degrees
question
Draw-back Effect
answer
blood in the barrel of a firearm that has been drawn backward into the muzzle
question
Drip Pattern
answer
a bloodstain pattern that results from blood dripping into blood
question
Expirated Blood
answer
blood that is blown out of the nose, mouth, or a wound as a result of air pressure or air flow, which is the propelling force
question
Flight Path
answer
the path of the blood drop as it travels through space from the impact site to the target
question
Flow Pattern
answer
a change in the shape and direction of a bloodstain due to the influence of gravity or movement of the object
question
Forward Spatter
answer
blood that travels in the same direction as the source of energy or force that cause the spatter
question
High-Velocity Impact Spatter(HVIS)
answer
bloodstain pattern caused by a high speed impact or force to a blood source, such as that produced by gunshot
question
Impact Pattern
answer
bloodstain pattern created when blood receives a blow or force resulting in the random dispersion of smaller drops of blood
question
Impact Site
answer
the point where meets a blood source
question
Low-Velocity Impact Spatter(LVIS)
answer
a bloodstain pattern caused by a low-speed impact or force to a blood
question
Medium-Velocity Impact Spatter(MVIS)
answer
a bloodstain pattern caused by a medium-speed impact or force to a blood source; a beating or stabbing type of spatter
question
Misting
answer
blood that has been reduced to a fine spray as a result of the energy or force applied to it
question
Parent Drop
answer
a drop of blood that casts off a wave or satellite spatter
question
Passive Drop
answer
bloodstain drop(s) created or formed by the force of gravity alone
question
Area of Origin
answer
the common area of a 3-D space to which the trajectories of several blood drops can be retraced
question
Area of Convergence
answer
the common area on a 2-D surface, over which the directionality of several blood drops can be retracted
question
Projected Blood Pattern
answer
a bloodstain pattern produced by blood released under pressure, such as arterial spurting, as opposed to by an impact
question
Satellite Spatter
answer
small droplets of blood distributed around a drop or pool of blood as a result of the blood hitting the target surface
question
Spatter
answer
blood that has been dispersed as a result of force applied to its source; a spatter pattern will vary depending on the force that created it
question
Spine
answer
the pointed or elongated stains that radiate from the central area of a bloodstain
question
Swipe Pattern
answer
the transfer of blood from a moving surface onto an unstained surface; direction is determined by the feathered edge
question
Target
answer
surface on which blood has been deposited
question
Transfer or Contact Pattern
answer
bloodstain pattern created when a wet, bloody surface comes in contact with a second surface; a recognizable image of all or a portion of the original surface may be observed in the pattern
question
Void
answer
an absence of stains; reverse shadow
question
Wipe Pattern
answer
bloodstain pattern created when an object moves through an existing stain removing or changing its appearance
