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Scenario: The victim was shot. Your two prime suspects are blaming each other. The woman claims the man shot the victim while the victim was sitting. The man claims the woman shot the victim when the victim was standing. You must analyze the blood spatter and see who is telling the truth and who is lying! CSI Blood Splatter Lab
So… If the man committed the crime the victim was sitting. If the woman committed the crime the victim was standing. CSI Blood Splatter Lab
Problem: How does the height from which a drop of blood falls affect the diameter of the splatter? CSI Blood SpLatterLaB
Hypothesis: CSI Blood Spatter LaB
Experiment Materials: CSI Blood Spatter LaB
Experiment Procedure: • Fill the dropper with artificial blood. Put the dropper 10 cm above the paper and drop one drop of blood. Repeat this two more times so that you have three drops of blood on your paper. CSI Blood Spatter LaB
Experiement Procedure: Repeat the previous process at 100 cm. You should have 3 drops of blood from each height. CSI Blood SpLatterLaB
Experiment Procedure: • Measure the diameter of each splatter in MILLIMETERS (mm). Record your data in your data table. CSI Blood SpLatterLaB
Experiment Procedure: • Calculate the average drop diameter (in millimeters) for each drop height. • Graph your average data. CSI Blood SpLatterLaB
Experiment Procedure: • Obtain a crime scene splatter from your teacher. Measure it and determine how far the blood dropped to form the crime scene splatter. CSI Blood SpLatterLaB
Analysis: CSI Blood Spatter LaB
Conclusion: CSI Blood Spatter LaB