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19 Cards in this Set
- Front
- Back
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Crime-Scene Reconstruction |
the method used to support a likely sequence of events at a crime scene by the observation and evaluation of physical evidence and statements made by individuals involved with the incident |
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Satellite Spatter |
Small droplets of blood that are distributed around the perimeter of a drop or drops of blood and were produced as a result of the blood impacting the target surface |
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Angle of Impact |
The acute angle formed between the path of a blood drop and the surface that it contacts |
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Impact Spatter |
A bloodstain pattern produced when an object makes forceful contact with a source of blood, projecting drops of blood outward from the source |
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Forward Spatter |
Blood that travels away from the source in the same direction as the force that caused the spatter |
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Back Spatter |
Blood directed back toward the source of the force that caused the spatter |
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Low-Velocity Spatter |
An impact spatter pattern created by a force traveling at 5 feet per second or less and producing drops with diameters greater than 3 millimeters |
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Medium-Velocity Spatter |
An impact spatter pattern created by a force traveling at 5 to 25 feet per second and producing drops with diameters between 1 and 3 millimeters |
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High-Velocity Spatter |
An impact spatter pattern created by a force traveling at 100 feet per second or faster and producing drops with diameters less than 1 millimeter |
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Area of Convergence |
The area on a 2D plane where lines traced through the long axis of several individual bloodstains meet; this approximates the 2D place from which the bloodstains were projected |
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Area of Origin |
The location in 3D space that blood that produced a bloodstain originated from; the location of the area of convergence and the angle of impact for each bloodstain is used to approximate this area |
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Cast-Off |
A bloodstain pattern that is created when blood is flung from a blood-bearing object in motion onto a surface |
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Arterial Spray |
A characteristic bloodstain pattern containing spurts that resulted from blood exiting under pressure from an arterial injury |
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Expirated Blood Pattern |
A pattern created by blood that is expelled out of the nose, mouth, or respiratory system as a result of air pressure and/or airflow |
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Void |
An area within a deposited spatter pattern that is clear of spatter, caused by an object or person blocking the area at the time of the spatter's deposition |
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Transfer Pattern |
A bloodstain pattern created when a surface that carries wet blood comes in contact with a second surface; recognizable imprints of all or a portion of the original surface or the direction of movement may be observed |
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Flow Pattern |
A bloodstain pattern formed by the movement of small or large amounts of blood as a result of gravity's pull |
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Skeletonization |
The process by which the edges of a stain dry to the surface in a specific period of time (dependent on environmental and surface conditions); remains apparent even after the rest of the bloodstain has been disturbed from its original position |
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Drip Trail Pattern |
A pattern of bloodstains formed by the dripping of blood off a moving surface or person in a recognizable pathway separate from other patterns |
