15. At what degree does a blood drop start to form a Tail? __ degrees 16. Label the blood drop: __ 17. What is velocity?How does it affect a blood drop? __ __ __

15. A blood drop typically starts to form a tail at an angle of impact less than 30 degrees. This is because the lower the angle, the more elongated the shape of the bloodstain becomes, leading to the formation of a tail.<br /><br />16. Labeling a blood drop involves identifying its parts, such as:<br />- **Spine**: The elongated part of the stain that points in the direction of travel.<br />- **Tail**: The pointed end of the blood drop that indicates the direction from which the blood originated.<br />- **Parent Drop**: The main body of the bloodstain.<br />- **Satellite Spatters**: Smaller droplets that break off from the parent drop upon impact.<br /><br />17. Velocity refers to the speed and direction of an object's movement. In the context of blood spatter analysis, velocity affects a blood drop in several ways:<br />- **Low-Velocity Impact**: Typically results in larger, rounder drops due to slower speeds (e.g., dripping).<br />- **Medium-Velocity Impact**: Produces smaller, more numerous spatters, often associated with blunt force trauma.<br />- **High-Velocity Impact**: Results in very fine mist-like spatters, usually seen in gunshot wounds or explosions.<br />- The velocity of the blood drop influences the size, shape, and distribution of the resulting bloodstains, providing clues about the nature of the event that caused the bleeding.