Chapter 12 Chemistry
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The surface texture
Which of the following is of paramount importance in the interpretation of bloodstain patterns?
Its direction of travel
The pointed end of a bloodstain always faces:
A bloodstain that impacts a surface at a low angle will have a(n) __________ tail than one that impacts at a higher angle.
In general, as both the force and velocity of impact increase, what happens to the diameter of the resulting blood droplets?
Droplets of _______________ are very small. They may not travel far and could be overlooked
Position of person from which pattern originated
What information can an investigator gain from the location of the area of origin of a bloodstain pattern?
Location of injury
Size of the wound created
Distance between the victim and the muzzle of the weapon
What affects the amount of backward spatter produced by a gunshot wound?
Presence of bubbles of oxygen in the drops
How can expirated blood be differentiated from both patterns?
What kind of patten is created when an object blocks the deposition of the blood spatter onto a target surface or object?
__________ patterns are produced when the object makes contact with a surface and is removed without any movement of the object.
The object or body was moved after the blood had dried.
What should one surmise if a flow found on an object or body does not appear consistent with the direction of gravity?
The drying time of the blood in a(n) __________ can provide an estimation of the amount of time that has elapsed since the blood was deposited.
The person who formed the pattern was moving slowly.
What is suggested by the absence of trails on bloodstains in trail pattern?
Grid and perimeter ruler methods.
What are the two methods for documenting bloodstain patterns in photographs?
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