Chapter 11 Quiz CJ 323 - 70

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What are the two basic categories of bloodstain patterns?

spatter stains and nonspatter stains

According to the first sub principle of the Principle of Stain Shape and Vector Correlation, the (1) of a free flight (2) on a surface produces a (3) with a circular (4) or shape.

1. collapse 2. droplet 3. stain 4. elliptical

Blood as a (1) responds to (2) of (3) and external (4) in a(n) (5) (6).

1. fluid 2. variations 3. internal 4. forces 5. predictable 6. fashion

*** Determining the (1) of a bloodstain, according to the Principle of Stain Shape and Vector Correlation, can be accomplished by calculating the (2) sine of the quotient of the (3) (minor axis) of the bloodstain divided by the (4) of the bloodstain.

1. impact angle 2. inverse 3. length 4. width

According to the Principle of Stain Shape and Vector correlation, the (1) of certain bloodstains provides (2) as to the (3) of (4) as well as to the (5) origin of the blood.

1. shape 2. indicators 3. direction 4. deposition 5. spatial

Place the order of the steps used in bloodstain pattern analysis in the correct order:

Page 339 in the text book

*** Which of the following processing methodologies would be appropriate for processing DRY nonporous smooth (glass, most plastics, smooth paint) surfaces for fingerprints?

Small particle reagent Silver Nitrate Iodine fuming (except metal) Basic Brush-and-Powder Techniques

Which theory, principle, or law is described by the following: "the variations in combinations of blood volumes and forces acting on those volumes lead to recognizable classes of patterns"?

The Pattern Diversity Principle

A bloodstain will appear which color under Longwave Ultraviolet (UVA) light?

Black

Which of the following are event mechanisms according to the Pattern Diversity Principle?

Blood dispersed as a function of gravity Static blood dispersed from a point source Blood dispersed as a function of secondary contact with a surface Blood that accumulates or flows on a surface Blood dispersed in a jet Blood dispersed as a function of accelerated motion

Which of the following are classified as types of spatter patterns?

Drip Impact spatter Drip trails Spurt Cast-off

Which of the following are field tests for the presumptive presence of blood?

leuco-malachite green phenolphthalein


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