The amount of spatter from a blood droplet falling on a hard, non-porous surface is _______ that of a drop of blood of equal size, falling from the same distance, onto a softer, porous surface.
The same as
Less then
Greater than
The pointed end of a bloodstain always faces
Opposite its direction of travel
Toward the direction from which the force came
Its direction of travel
Toward the position of the blood source
A blood droplet deposited at an angle of impact of about 90º (directly vertical to the surface) will:
Show acute elongation
Feature a tail showing the directionality
Be elliptical in shape
Be approximately circular in shape
The most common type of bloodstain pattern found at a crime scene is:
Cast-off spatter
Void spatter
Impact spatter
Arterial spray
The velocity classification of an impact spatter pattern
Cannot illuminate the specific events that produced the pattern
Can determined the kind of action that produced the patter
Is never used for descriptive purpose
Can only be determined by a trained bloodstain pattern analyst
The intersection of straight lines through the long axis of several individual bloodstains in an impact spatter pattern illustrates the ______ of the pattern
Area of origin
Void patter
Area of convergence
Velocity classification
At the crime scene, the string method is used to find the ______ of an impact spatter pattern
Void pattern
The deposition of backward spatter produced by a gunshot wound is determined be:
The location of the injury
The size of the wound created
The distance between the victim and the muzzle
All of the above
If a murder victim's blood is found in the muzzle of a firearm:
No conclusion can be made
It can be concluded that the firearm is the murder weapon
It can be concluded that the firearm was present during the injury to the victim
It can be concluded that the owner of the firearm is the prepetrator
Which weapon would create cast-off patterns consisting of small droplets in a linear pattern?
Baseball bat
Knife
Wooden plank
The pressure of the pumping of oxygenated blood out of an injury causes bright red-colored blood to spurt out and form a(n):
Expirated pattern
Arterial spray pattern
Both b and c
The removal of an object or surface that was located between the origin of blood and the target surface during the blodstain deposition leaves behind:
Expirated blood
A void
Blowback spatter
An undentifiable pattern
When an object with blood on it touches one that does not have blood on it, this produces a(n):
Flow
Indistinguishable pattern
Contact pattern
Trail pattern
Widely spaced bloody shoe prints with satellite spatter between the shoe prints were likely deposited by an individual who was:
Standing in place
Walking slowly
Running
Carrying a bloody weapon
The direction of a _______ may show movement of objects or bodies while the pattern was still forming or after the blood has dried
Flow pattern
Cast-off pattern
Bloodstain tail
The approximate drying time of a pool of blood can be used to estimate timing of events at a crime scene and is dependent upon:
The clotting ability of the blood
The blood type of the blood
The environmental condition of the scene
The method of deposition
The skeletonized perimeter of a bloodstain can be used to interpret:
The kind of force that produced the bloodstain
The time that elapsed between deposition of the stain and alteration of the stain
The source of the bloodstain
