what can affect how you prepare to conduct a crime scene investigation?
location, weather, time of day
according to lecture, what is the first thing a first responder should do at a major crime scene?
search for and detain the suspect
a blood spatter pattern consisting of a large number of very fine, mist-like droplets indicates that the blood probably came from a
which is not one of the categories of patters we discussed in chapter 4
individualizing, reconstruction, sequencing. and these are all patters for analysis
a swipe bloodstain pattern is the result of
a bloody object in motion contacting another clean surface
blood spatter patterns can indicate
how many sources of blood there were, what type of weapon was used, the number of times a weapon was used
the ______ the droplet, the ______the force that was used to create the spatter
smaller, the greater
which is NOT a variable to cinsider when examining blood patterns?
blood alcohol level when blood is shed
this is not a fundamental principle of fingerprinting
fingerprints are formed when someone is about five years old
the ACE-V method of print identification involves
analysis, comparison, evaluation, and verification
when collecting document evidence, it is important to carefully protect the document to avoid
loss of possible DNA, loss of possible indentations, loss of possible latent print evidence
questioned document examiners prefer to work with copies so they do not damage the original document
natural variation in a person's handwriting is ___ when compared to the variation between individuals
the three parts of the writing process that can yield useful information are
writing surface, writing instrument, and transfer medium
handwriting comparisons can be made using
how letters are made, where pressure is applied, and connections between letters
indented writings on evidence can be visualized with an instrument called
an Electrostatic Detection Apparatus (ESDA)
It is not possible to examine a document to see what printer or copier it could have originated from
the four components of a firearm cartridge are
the primer, the propellant, the cartridge, and the barrel
class characteristics of a firearm detectable from a fired bullet include
the direction of the twist of the barrel of the gun
which type of test is frequently done with recovered firearms to evaluate the possibility of accidental discharge?
trigger pull test
gunshot residue (GSR) testing can be difficult to perform because...
GSR particles do not travel far, can be washed off and only last a few hours
you are using phenolphthalein to test a reddish brown stain for the presence of blood. When you put a drop of phenolphthalein on the swab with your sample, it turns pink immediately. This test is:
invalid because it turned pink
in forensic biology, confirmatory tests
can determine a sample to the exclusion of all other possibilities
what happened to the initial suspect in the Yates murder case?
he began a scholarship fund after winning a slander lawsuit
genetic differences among people that enable them to be distinguished are called genetic ___?
what happened in the steven lawrence murder that generally cannot occur in the United States
he was tried again for the same crime
the most common instrument used to give an indication of the type of accelerant used to start a fire is
the process by which solid materials are decomposed by heat, forming smaller molecules that can support flaming combustion is called
the method for separating and concentrating ingnitable liquids that uses a syringe to collect samples is the
heated headspace method
substrate samples collected from the scene of a suspicious fire should be taken from
burned and unburned areas
the point of origin of a fire can often be determined by examination of burn patters in what pattern?
a vee shape
the synthetic opiate we discussed in class that was unknowingly injected by drug users and caused near instant death was
which case does not generally require an autopsy?
a 78 year old heart attack victim who died at the hospital