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Question 1

6 Basic Mechanisms of Pattern Formation

Answer 1

1) Blood released from a source as a function of gravity
2) Blood dispersed through the air from a source by force
3) Blood released from an object in motion
4) Blood ejected in volume under pressure
5) Blood deposited through contact
6) Blood that accumulated or flowed on a surface

Question 2

6 Bloodstain Pattern Analysis May Help Determine

Answer 2

1) Location of an impacted blood source
2) Minimum number of impacts to a blood source
3) Mechanism or object used to create a specific pattern
4) Position and/ or movement of persons and/or objects during and/or after bloodshed
5) Sequence of events
6) Validity of statements and/or theories

Question 3

Ability of blood to reproduce specific patterns is NOT affected to any significant degree by age, sex, body temperature, alcohol, content, or disease? 

Answer 3

True

Question 4

True or false, there is NO significant difference between human and animal, blood and re-creating specific patterns? 

Answer 4

True

Question 5

What are two important physical properties of blood?

Answer 5

Surface tension in viscosity

Question 6

What is BPA?

Answer 6

The study of size, shapes, location, and distribution of bloodstains in order to determine the physical events that gave rise to their origin

Question 7

What factors affect the appearance/size of a drip stain?

Answer 7

Height of fall, target surface, impact angle, and volume of blood

Question 8

Is blood and newtronian fluid?

Answer 8

No

Question 9

More force means smaller or larger droplets?

Answer 9

Smaller

Question 10

Who used live rabbits to conduct the first experiments in BPA?

Answer 10

Piotrowski in 1895 

Question 11

BPA is the study of what?

Answer 11

Size,shapes, location, and distribution

Question 12

What are bloodstained patterns? 2 things!
?

Answer 12

Predictable and reproducible 

Question 13

7 gravity classifications

Answer 13

Drip stain
Drip Trail
Drip pattern
Splash pattern
Pool
Saturation stain
Flow

Question 14

Three types of transfer stains

Answer 14

Transfer stain
Swipe
Wipe

Question 15

Five spatter patterns.


Answer 15

Impact pattern
Expiration pattern
Castoff pattern
Cessation pattern
Projected pattern

Question 16

Laws will behave according to the____ and ____ of physics?

Answer 16

Laws and principles 

Question 17

Blood is a ____ thinning fluid

Answer 17

Shear

Question 18

The appearance of a bloodstain is dependent on the ___ it is deposited on?

Answer 18

Surface

Question 19

Bloodstain

Answer 19

A deposited blood on the surface

Question 20

Bloodstain pattern

Answer 20

A grouping or distribution of bloodstains that indicate through regular or repetitive form, order or arrangement, the manner in which the pattern was deposited

Question 21

Basic Tenets of Bloodstain Pattern Analysis

Answer 21

1) Blood will behave according to the laws and principles of physics.
2) The appearance of a bloodstain is surface dependent.
3) The direction a blood droplet was traveling can usually be determined by the shape of the resulting stain.
4) Bloodstain patterns are predictable and reproducible.