Bloodstain pattern

Question 1

The information gained from bloodstains.
____ did the blood come from.
_____ caused bleeding.
direction object ____ from.
where did victim and assailant ____ and ____ to.
____ of strikes.
Evidence fit witness ____.

Answer 1

Where
object
struct
start move
number
fit

Question 2

Blood moves and behaves under the ________.

Drops travel like ____ in motion. Land with a specific pattern depending on ____, ____, ____, etc.

Answer 2

laws of physics
projectile
size, angle, velocity

Question 3

Measuring the width and the length of the bloodstain allows investigators to determine ___ of the impact. Stain takes a specific shape ____ to ____ depending on the angle.

Answer 3

angle

elliptical to circular

Question 4

What is the name of the little drops of blood that separate from the initial drop?

Answer 4

satellites

Question 5

___ make the blood clot. When it clots, it will separate into a yellow liquid called ____ and a red clot.

Answer 5

proteins

serum

Question 6

Liquid = _____ have passed
Shiny jelly-like = _______ have passed
Separated = _______ have passed?

Answer 6

minutes
up to an hour
more than an hour

Question 7

Proteins in the blood create ___ ____.
Blood also contains ____ that contain ____ (individual).
___,____,_____ can also be located in blood.

Answer 7

blood types
cells DNA
drugs, poison, alcohol

Question 8

Passive bloodstain is only affected by _____. It is caused by blood _____ from an object/person.

Answer 8

Gravity

dripping

Question 9

Projected bloodstains are affected by ______. This gives rise to ______ which is a constellation of bloodstains.

Answer 9

force other than gravity

blood splatter

Question 10

Low velocity:
Less than ___ feet/second.
___ drops. More than ___mm.

Answer 10

5
large
4

Question 11

Medium velocity:
Between ___ and ___ feet/second,
Drops from ___ to ___mm.
produced by the impact of a ___ or ___ object.

Answer 11

5-100
1-4
blunt
sharp

Question 12

high velocity:
more than ___feet/second.
fine mist, drops less than __mm.
caused by _____ or ________.

Answer 12

100
1
bullet wounds
high speed machines

Question 13

The fine mist can be found on the shooter or behind the victim.
When in front: ___ wound.
When in the back: ____ wound.

Answer 13

exit

entry

Question 14

Explain the difference between impact splatter, projection splatter and combination spatter.

Answer 14

Impact: object
projection: cast off
combination both

Question 15

What can we determine with a projection spatter?

Answer 15

a number of arcs number of strikes.

Question 16

What is the name of the 2 points that can help us figure out where was the victim at the moment of the crime?

Answer 16

convergence and origin

Question 17

what is the directionality?

Answer 17

The course followed by the drop

Question 18

What is the impact angle?

Answer 18

the angle at which the drop hit the surface.

Question 19

The point of convergence is in __D. What is this point?

Answer 19

2

Point where all the lines of each drop meet.

Question 20

What is the marge of error of the point of origin?

Answer 20

2 feet

Question 21

What are the steps to finding the point of origin?

Answer 21

1- pole as an axis
2- one string for each droplet
3- the angle of the impact with from of drop.
4- where strings meet = point of origin.

Question 22

What is the void and what can it help us find?

Answer 22

empty space in the middle of a blood splatter. 
1- assailant 
2- object moved. 
3- location of the victim
4- if the body was moved.
5- if the body was moved
6- determine what produced bloodstain.