Forensic Science Chapter 2- the crime scene
The obligation to maintain the integrity of evidence belongs to which of the following?
All of the above
as a matter of routine, all items of clothing are to be ________ before packaged.
air dried
Physical evidence may be obtained from
all of the above 1. the crime scene 2. the victim 3. the suspect
all of the following items may be placed in airtight container except
blood stained clothing
besides the more obvious items of physical evidence, possible ______ of trace evidence must be collected for detailed examination in the laboratory.
carriers
the possibility of future legal proceedings requires that a(n) __________ be established with respect to the possession and location of physical evidence.
chain of custody
photographs of physical evidence must include overviews as well as _____ to record the details of objects.
close-ups
in cooperation with the medical examiner or coroner, what type of evidence is to be retrieved from a deceased victim for examination in the crime laboratory?
clothing, fingernail scrapings, head and pubic hair, DNA vaginal and rectal swabs, recovered bullets from the body, hand swabs for GSR.
in cooperation with the medical examiner or coroner, evidence retrieved from a deceased victim to be submitted to the crime laboratory should include,
clothing, fingernails, head and pubic hairs, blood, etc.
the evidence collector is not concerned with
determining the natural variations that exist in physical evidence.
each item collected at the crime scene must be placed in a(n) container.
different
all unauthorized personnel must be _____ from crime scenes.
excluded
true or false: charred debris recovered from the scene of an arson is best placed in a porous container
false
true or false: scientific evaluation of crime-scene evidence usually can overcome the results of a poorly conducted criminal investigation.
false
true or false: the techniques of physical evidence collection require a highly skilled individual who must specialize in this area of investigation.
false
true or false: an ordinary mailing envelope is considered a good general-purpose evidence container.
false.
an airtight container (is, is not) recommended packaged material for bloodstained garments.
is not
whenever possible, trace evidence (is, is not) to be removed from the object that bears it.
is not
when ______ sets in after death, the skin appears dark blue or purple in the areas closest to the ground
livor mortis
three methods for recording the crime scene are:
notes, photography, sketches.
the term _______ encompasses all objects that can establish whether a crime has been committed or can link a crime and it's victim or it's perpetrator.
physical evidence
most physical evidence collected at the crime site will require the accompanying submission of _______ material for comparison purposes.
reference sample
an investigator need draw only a(n) _______ sketch at the crime scene to show it's dimensions and pertinent objects.
rough
a detailed search of the crime scene for physical evidence must be conducted in a(n) _______ manner.
systematic
The manner of collecting and preserving physical evidence at a crime scene is determined by
the nature of the evidence
The relative evidential value of laboratory test results is almost always dependent on
the way the evidence is collected and presented for examination
true or false: one method for approximating the time of death is to determine body temperature.
true
the most important prerequisite for photographing a crime scene is to have it in a(n) _____ condition.
unaltered