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FSC100_ The Real CSI Final Exam WITH 100- SURE ANSWERS
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9/30/24, 11:47 AM FSC100: The Real CSI Final Exam Flashcards | QuizletEUNICE
FSC100: The Real CSI Final Exam WITH QUESTIONS AND
100% SURE ANSWERS
Terms in this set (278)
objects that can:
what could be physical evidence? - establish that a crimme has been committed
- make associations (crime to victim, victim to perpetrator)
- of not just what but where
recognition
- situation of items relative to each other
consider paths of contamination from:
- perpetrator activity
where to start searching - first responders
- emergency response
- look out for media interference
- lane/strip search
- line search
how do you search a crime scene?
- circle/spiral search
- zone search
canine units
metal detectors
what are some other search tools? heavy machinery
thermal imaging
ground penetrating radar
- indoor/outdoor
- size
- urgency
- lighting available
search method is based on factors such as:
- what is being searched for
- what evidence was already found
- concentration of material
- people available
good for large areas
lane/strip search
good for uneven terrain
must remain in a super straight line with everyone else as you move across crime scene,
line search limit
at the same pace
good for locating additional items associated to an existing piece of evidence
circle/spiral search benefits
typically done indoors - too difficult to do outdoors
circle/spiral limits difficult to stay in a perfect spiral path to ensure nothing is missed
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, 9/30/24, 11:47 AM FSC100: The Real CSI Final Exam Flashcards | Quizlet
good for where other patterns won't work - typically in a house divided by rooms -
zone search benefits
used where scene is already broken up into zones
- selectivity is determined by collector
- need knowledge about crime lab techniques, capabilities, limitations
how is evidence collection selective?
- lack of this knowledge can lead to evidence being overlooked or collected
improperly
why do you need a reference sample? to compare unknown samples to it
- standard/reference - ex. hair/blood/DNA
control/known samples include: - substrate control - ex. oil, carpet
- elimination samples
- use proper PPE
- clean tools between collection of different samples
how do you prevent contamination?
- change gloves frequently
- package items separately to avoid cross contamination
- plastic pill bottles
- manila envelopes
things that are commonly used to collect - tinfoil 'boats'
evidence - cardboard pillboxes
- sealable plastic bags
- paper bags of various sizes
what is the druggist's fold used for? to collect trace evidence
what do you do with wet or bloodstained air dry them before packaging and/or place into paper bags so they have room to
materials? breathe and dry off
what should be done with items soiled with should be placed in a cooler with ice packs
biological fluid that cannot be dried?
how do you seal packaged evidence? with tamper-proof tape, then initial the seal
- case number
- item number
- location
how do you document evidence? - name of collector
- date and time of discovery
- date and time of collection
- description of item
- item type has low success rate/expectation of obtaining reliable results
- not the most relevant to address allegations
why might a sample not be submitted for
- no probative value
analysis?
- an individual is already associated with the item
- item has previously been tested for body fluids or fingerprints
use of as many developmental techniques as necessary to process a piece of latent
sequential processing
evidence, applying least invasive to most invasive
- severity of offense
what are the systems in place to prioritize - type of evidence
samples/cases? - probative value of evidence
- urgency/risks to public
what are the two types of DNA testing high volume services and violent crime services
services at the CFS?
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