| A | B |
|---|
| backspatter | blood directed back toward the source of energy (tells the direction of assault) |
| cast off blood | blood thrown from an object in motion |
| wipe pattern | a nonblood bearing object moves through a wet bloodstain thereby changing the look of the stain's pattern |
| contact stain | bloodstain caused by conact with blood then a second surface |
| bloodstain transfer | when a bloody object comes in contact with a surface and leaves a patterned image (shoeprint) |
| swipe | wet blood is transferred to a surface which did not have blood on it before |
| point of convergence | intersection of 2 bloodstain paths where the stains come from opposite sides of the impact area |
| satellite spatter | the little drops of blood that spread around the primary drop as a result of the impact |
| angle of impact | angle at which blood hit the target surface |
| area of convergence | point of origin or the spot where the blow happened |
| terminal velocity | the greatest speed to which a free falling drop of blood can accelerate in the air |
| void | absence of stains in an area of bloodstains due to an object blocking the bloodstain pattern (lamp blocks spatter then falls) |
| precipitin test | tests for animal or human blood |
| drug | natural or synthetic substance that psychologically or phsiologically affects user |
| control | sample with known composition |
| toxin | life threatening material |
| toxicology | study of negative affects of chemical or physical agents on living organisms |
| forensic science | application of science to law |
| Locard's principle | Every contact leaves a trace |
