A Spatter into Science

Last week in Mrs. Celaschi’s forensics class, we dived into fingerprinting and identification. This week the class is uncovering the exciting world of blood spatter. There have been two labs, the first on normal blood spatter and the second on angled spatters. The main objective of these projects is to see how blood spatter can tell the detailed story of a crime scene. The most important factors are height, angle and texture.

On day one, the students used artificial blood to drip on paper at different heights to see how the spatter comes out at a certain range and material. The class recorded various heights to see how big or little the spatters would be. Together the class found out how there are many things that could affect a blood spatter to form and shape. Along with height and angle, texture is just important. Rough material allows blood to splat outwards more than soft or nonporous materials.

Day two was about angles. Tilting clipboards with paper on them, we did a similar experiment as the first, this time creating new problems and scenarios for spatter. Testing certain angles to see how blood spatters shape themselves, we recorded the lengths that the spatter formed. This exciting lab was just one of many that teaches students why we do the things we do in forensics science and the work behind it.

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