Forensic Science Blood Spatter

Blood spatter that results from a damaged artery producing large drop patterns is called...

• Smears

• Cast Off

• Arterial Gushes

• Passive Drops

The spatter pattern that is created when a blood covered instrument is raised or swung backwards.

• Smears

• Cast Off

• Arterial Gushes

• Lines of Convergence

True or False: A blood drop that falls at a 90 degree angle, makes an elongated drop mark.

• True

• False

Luminol is a chemical used to...

• Illuminate or glow if blood is present

• Detect if the blood is from a human or not

• Determine the blood type of an individual

• Preform a White Blood Cell count

According to the graph shown here, if the average blood droplet size found at the Anna Garcia scene is 8.9mm, how high did the blood fall?

• 40 cm

• 90 cm

• 130 cm

• 170 cm

Tags

NGSS.MS-PS3-1

Which droplet angle would be categorized as PASSIVE GRAVITATIONAL SPATTER?

• 90 degrees

• 60 degrees

• 20 degrees

• 10 degrees

A blood spatter analyst conducted an experiment to see if the height at which blood drops affect the diameter of the blood spatters. Below is a graph of their data with a line of best fit to show the trend.

The next week the analyst was called into a crime scene where there were passive blood spatters that averaged 20 mm in diameter. The analyst used their experimental data to determine the blood likely fell from a height of ________________. 

• 160 cm 

• 160 mm 

• 13 mm 

• 180 cm 

• 13 cm 

Tags

NGSS.MS-PS3-1

What blood spatter pattern is seen in the photo?

• Low Velocity

• Expirated Blood

• High Velocity

• Medium Velocity

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

What type of blood spatter pattern is shown here?

• Terminal velocity

• High velocity

• Medium velocity

• Low velocity