100% Correct Answers
what is an example of a scenario where you would see combination spatter? - Answer
victim is stabbed in chest or neck - see impact spatter from force of attack and
projection spatter from arterial bleeding, expirated, or cast-off blood
classification by velocity looks at not only the velocity at which the impacting object
strikes the blood source but also... - Answer the velocity at which blood leaves the blood
source when struck
classification by velocity divides into what different categories? - Answer low, medium,
and high velocity
the different velocity categories give an indication of what? - Answer the object and
mechanism used to make the spatter
this type of spatter occurs when an object traveling less than 5 ft/second strikes a
surface - Answer low velocity spatter
what would the spatter typically look like/size in low velocity spatter? - Answer fairly
large spatter - greater than 4mm
low velocity spatter is produce by what type of mechanisms? - Answer drops dripping
from wound or blood-soaked clothing or weapons
an arterial bleed would produce what type of pattern? - Answer freely spurting artery
results in linear and cascading spatter pattern
, as the victim loses blood with an arterial bleed, what will happen to the pattern? -
Answer pattern's distance from wound, length, and volume may decline steadily as
victim loses blood volume and pressure
cast-off blood - Answer blood flung from an object due to centrifugal force
when is cast-off blood typically seen? - Answer when attacker uses weapon to deliver
series of arcing blows
where is cast-off blood typically seen? - Answer walls and ceilings
cast-off blood pattern tends to be a uniform trail of droplets which reflect... - Answer
arc in which object traveled
number of cast-off patterns indicates - Answer minimum number of blows to the victim
*could be more but never less
determining point of convergence and angle of impact of cast-off stains can reveal what
about the assailant? - Answer assailant's position at the time weapon was swung
can you estimate the height and hand which delivered the blow? - Answer in some cases
this type of spatter occurs from objects moving between 5 and 100ft/second - Answer
medium velocity spatter
what sizes are medium velocity spatter typically? - Answer smaller than low velocity (1-
4mm)