Blood
At which angle do drops form a perfect circle?
90 degree angle
What type of spatter would be found on the clothing of a shooter in a close range homicide?
Back Spatter
What is the string method used to find?
Area of convergence
This kind of surface produces irregularly shaped drops.
Rough
Porous
How many times did Dr. Sam Sheppard go to trial for the brutal murder of his wife?
3
What blood pattern results from being slung off an object?
Cast Off
What pattern results from a blood bearing source coming in contact with another surface?
Transfer Pattern
Contact Patter
In a drip trail pattern, the droplets getting gradually smaller means they came from what kind of source?
Blood bearing source
The laser method is used to determine what?
The origin of a bullet or projectile that has gone through a window or wall.
What two qualities of a surface produce the roundest drops?
Smooth
Non-porous
What blood pattern may have bubbles or saliva in it?
Expirated Blood Spatter
A squirting of blood caused by the heart pumping blood results in this pattern.
Arterial Spray
What velocity of impact produces the smallest drops?
High Velocity
What velocity (need the #) that produces drops 1-4mm in diameter?
25ft/sec
In the Jodi Arias case, where was the boyfriend found in the apartment?
Shower
What is one way a misting pattern can occur?
Gun Shot
Coughing blood
Head Wound
What does a pool of blood indicate?
The blood source was stationary for some time?
If a victim is killed by blunt force trauma you are likely to see...
cast off
What kind of motion results in perfectly round drops?
No motion of the blood source
What about a blood drop determines if it runs or flows down a surface?
Volume
What is the name for the pattern that results from the outer perimeter of a blood drop drying for less than 60 sec and then being wiped away?
Skeletonization
What does the tail or point on a blood stain indicate?
The direction of travel or impact
This results from an object being moved after blood is deposited.
Void Pattern
What is the equation used to determine the angle blood droplets struck a surface?
sinA=width/length
What is the most common type of bloodstain found at a crime scene?
Impact Spatter