# Bloodspatter Review

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The flashcards below were created by user lydianoellerae on FreezingBlue Flashcards.

1. What was Eduard Piotrowski's contribution to the forensic sciences?
First detailed study of bloodspatter evidence in Poland
2. List several factors that can affect the final shape of a bloodstain formed when a falling blood droplet strikes a surface at a 90 degress angle of impact.
Texture of surface, size/volume of blood, height fallen, force/velocity
3. Describe the general relationship between the impact angle and the final bloodstain shape.
More oblique impact angle, more elongated bloodstain
4. Know how to calculate impact angle from a crime scene bloodstain.
Arcsine of theta = width / length
5. Know which feature of a bloodstain is used to determine direction of impact.
The tail
6. Explain how one can determine the point(s) of convergence from a set of crime scene bloodstains.
Find the angles of impact; reconstruct direction; area with most dense intersections is the point of convergence
7. Describe the visual features of low, medium and high velocity bloodstain patterns and the activities that produce them.
• Low velocity
• - more than or equal to 4mm; gravity
• Medium velocity
• - between 1 and 3mm; physical contact
• High velocity
• - less than 1mm; backspatter and forward spatter possible; firearms
8. Name and describe the various types of bloodstains that can be found at a crime scene and the actions that can produce them.
• Falling
• - trailing
• Contact
• -transfer
• Wipe
• - clean object contacting bloody surface
• Swipe
• - bloody object contacting clean surface
• Cast off
• - flinging/swinging; bidirectionality; linear
• Arterial spurt
• - wavelike; large volume of blood
• Running/flow
• - victim stationary
• Secondary
• - blood dripping into blood
• Void
• - outline of object

### Card Set Information

 Author: lydianoellerae ID: 152731 Filename: Bloodspatter Review Updated: 2012-05-07 20:10:04 Tags: Bloodspatter forensic science criminalistics Folders: Description: Made for "Introduction to Forensic Science & Criminalistics" by Gaensslen, Harris and Lee Show Answers:

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