FSC100: THE REAL CSI FINAL EXAM QUESTIONS
What could be physical evidence? - answer -objects that can:
- establish that a crimme has been committed
- make associations (crime to victim, victim to perpetrator)
Recognition - answer -- of not just what but where
- situation of items relative to each other
Where to start searching - answer -consider paths of contamination from:
- perpetrator activity
- first responders
- emergency response
- look out for media interference
How do you search a crime scene? - answer -- lane/strip search
- line search
- circle/spiral search
- zone search
What are some other search tools? - answer -canine units
Metal detectors
Heavy machinery
Thermal imaging
Ground penetrating radar
Search method is based on factors such as: - answer -- indoor/outdoor
- size
- urgency
- lighting available
- what is being searched for
- what evidence was already found
- concentration of material
- people available
Lane/strip search - answer -good for large areas
Good for uneven terrain
Line search limit - answer -must remain in a super straight line with everyone else as
you move across crime scene, at the same pace
Circle/spiral search benefits - answer -good for locating additional items associated to
an existing piece of evidence
Typically done indoors - too difficult to do outdoors
, Circle/spiral limits - answer -difficult to stay in a perfect spiral path to ensure nothing is
missed
Zone search benefits - answer -good for where other patterns won't work - typically in a
house divided by rooms - used where scene is already broken up into zones
How is evidence collection selective? - answer -- selectivity is determined by collector
- need knowledge about crime lab techniques, capabilities, limitations
- lack of this knowledge can lead to evidence being overlooked or collected improperly
Why do you need a reference sample? - answer -to compare unknown samples to it
Control/known samples include: - answer -- standard/reference - ex. Hair/blood/dna
- substrate control - ex. Oil, carpet
- elimination samples
How do you prevent contamination? - answer -- use proper ppe
- clean tools between collection of different samples
- change gloves frequently
- package items separately to avoid cross contamination
Things that are commonly used to collect evidence - answer -- plastic pill bottles
- manila envelopes
- tinfoil 'boats'
- cardboard pillboxes
- sealable plastic bags
- paper bags of various sizes
What is the druggist's fold used for? - answer -to collect trace evidence
What do you do with wet or bloodstained materials? - answer -air dry them before
packaging and/or place into paper bags so they have room to breathe and dry off
What should be done with items soiled with biological fluid that cannot be dried? -
answer -should be placed in a cooler with ice packs
How do you seal packaged evidence? - answer -with tamper-proof tape, then initial the
seal
How do you document evidence? - answer -- case number
- item number
- location
- name of collector
- date and time of discovery
- date and time of collection
- description of item
What could be physical evidence? - answer -objects that can:
- establish that a crimme has been committed
- make associations (crime to victim, victim to perpetrator)
Recognition - answer -- of not just what but where
- situation of items relative to each other
Where to start searching - answer -consider paths of contamination from:
- perpetrator activity
- first responders
- emergency response
- look out for media interference
How do you search a crime scene? - answer -- lane/strip search
- line search
- circle/spiral search
- zone search
What are some other search tools? - answer -canine units
Metal detectors
Heavy machinery
Thermal imaging
Ground penetrating radar
Search method is based on factors such as: - answer -- indoor/outdoor
- size
- urgency
- lighting available
- what is being searched for
- what evidence was already found
- concentration of material
- people available
Lane/strip search - answer -good for large areas
Good for uneven terrain
Line search limit - answer -must remain in a super straight line with everyone else as
you move across crime scene, at the same pace
Circle/spiral search benefits - answer -good for locating additional items associated to
an existing piece of evidence
Typically done indoors - too difficult to do outdoors
, Circle/spiral limits - answer -difficult to stay in a perfect spiral path to ensure nothing is
missed
Zone search benefits - answer -good for where other patterns won't work - typically in a
house divided by rooms - used where scene is already broken up into zones
How is evidence collection selective? - answer -- selectivity is determined by collector
- need knowledge about crime lab techniques, capabilities, limitations
- lack of this knowledge can lead to evidence being overlooked or collected improperly
Why do you need a reference sample? - answer -to compare unknown samples to it
Control/known samples include: - answer -- standard/reference - ex. Hair/blood/dna
- substrate control - ex. Oil, carpet
- elimination samples
How do you prevent contamination? - answer -- use proper ppe
- clean tools between collection of different samples
- change gloves frequently
- package items separately to avoid cross contamination
Things that are commonly used to collect evidence - answer -- plastic pill bottles
- manila envelopes
- tinfoil 'boats'
- cardboard pillboxes
- sealable plastic bags
- paper bags of various sizes
What is the druggist's fold used for? - answer -to collect trace evidence
What do you do with wet or bloodstained materials? - answer -air dry them before
packaging and/or place into paper bags so they have room to breathe and dry off
What should be done with items soiled with biological fluid that cannot be dried? -
answer -should be placed in a cooler with ice packs
How do you seal packaged evidence? - answer -with tamper-proof tape, then initial the
seal
How do you document evidence? - answer -- case number
- item number
- location
- name of collector
- date and time of discovery
- date and time of collection
- description of item
