Bloodstain Patterns

Multiple Choice

Blood type was determined from a spatter found at the crime scene. Blood type is what type of evidence?

• Physical evidence

• Circumstantial evidence

• Biological evidence

• Trace evidence

Multiple Choice

What information can bloodstain patterns provide about a crime scene that DNA cannot?

• Identity of the perpetrator

• Sequence of events

• Type of weapon used

• Location of the crime

Open Ended

Explain how forensic scientists use bloodstain patterns to reconstruct the sequence of events at a crime scene.

Multiple Select

Which of the following can be learned by examining blood drops?

• Speed of blood droplets on impact

• Position of victim

• Direction that the blood droplets were traveling

• Type of blood

Open Ended

List three things that can be learned by examining blood drops at a crime scene.

Multiple Choice

Which of the following is NOT a category of blood patterns?

• Dripping Blood Patterns

• Impact/Splatter

• Other

• DNA Pattern

Multiple Choice

Which characteristic distinguishes dripping blood patterns from high velocity blood patterns?

• Dripping blood patterns are more viscous and spherical

• Dripping blood patterns are less visible

• Dripping blood patterns are always redder

• Dripping blood patterns are smaller in size

Open Ended

Explain how the ratio between the long and short axis of a bloodstain helps in blood pattern analysis.

Multiple Choice

How can the directionality of a free-falling blood drop be determined according to the slides?

• By measuring the angle of impact and analyzing the shape of the drop

• By checking the color of the blood

• By counting the number of drops

• By measuring the temperature of the blood

Multiple Choice

Which of the following is NOT a type of medium velocity impact spatter?

• Projected blood flow pattern like open artery

• Repetitive dripping pattern

• Cast off bloodstain pattern

• Blood pools

Hotspot

Identify the blood spatter drop that came directly from above (90°).

Math Response

What is the angle of impact of this blood spatter drop?

Type answer here

Correct Answer: 90

Deg^°

Rad

Multiple Select

Select all the patterns that are considered 'other blood patterns' as described in the slides.

• Blood pools

• Contact transfer bloodstain patterns

• Wipe/swipe patterns

• High velocity impact spatter

Multiple Select

Which of the following can bloodstain pattern analysis help determine at a crime scene?

• The location of the victim

• The location of the perpetrator

• The weapon used and how it was used

• The age of the victim

Open Ended

After learning about bloodstain patterns, what questions do you still have or what would you like to know more about?

Open Ended

Describe what bloodstain patterns can tell us about a crime.