Font size
WorksheetsBlood Spatter Analysis
Total questions: 30
Worksheet time: 23mins
What type of blood spatter pattern is seen the image?
transfer pattern
void pattern
swipe pattern
low velocity
A drop of blood that strikes a surface at an angle of impact approximately 90-degrees will be close to _______ in shape.
circular
teardrop
elliptical
elongated
Spikes
Splats
Satellites
Gushes
What type of pattern is created when blood is blown out of the nose, mouth, or a wound as a result of air pressure?
high velocity impact spatter
cast off
expiratory blood
wipe pattern
The arrow is pointing to a
satellite
spine
parent drop
What is the formula for calculating the angle of impact of a blood droplet?
tan = width/length
sin-1 = width/length
tan = length/width
sin = length/width
Lines of convergence can pinpoint:
The exact or approximate place of origin
The location of the crime
The type of object used in the crime
The velocity of blood flow
Draw in the line to find the area of convergence, then circle the area of convergence.
What direction was this blood spatter moving?
left to right
right to left
Let us say that we find a blood stain 10 ft away from the source and we have determined that the angle of impact is 70 degrees. Determine the height. H=D x Tan(angle)
2.747ft
892ft
27.47ft
3.64ft
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
