WorksheetsObservation, CSI & Evidence Collection
Total questions: 20
Worksheet time: 12mins
The idea that with any contact between two items there will be transfer is known as _____
physical evdience
Locard's exchange principle
Forensic exchange principle
the law of forensics
Indirect evidence, evidence used to imply a fact but not prove it directly
control sample evidence
eyewitness testimony
primary evidence
circumstantial evidence
Which of the following is NOT an example of direct evidence?
surveillance video
compatible blood type
a confession
eyewitness testimony
The first officer arriving at a crime scene, after providing or obtaining medical assistance for the injured and making an arrest of suspects (if possible), should immediately:
photograph the scene.
search for evidence.
make a rough sketch of the scene.
secure the scene.
All evidence gathered at a crime scene must be
labeled and documented
analyzed in a scientific manner
handled carefully so not to contaminate the specimen
all of the above
Processing a crime scene involves:
only collecting evidence and taking pictures
Collecting evidence, sketching the scene, taking pictures, interviewing suspects, and examining the scene
only examining the scene and interviewing witnesses
only sketching the scene and taking pictures
Small but measurable amounts of physical or biological material found at a crime scene
individual evidence
class evidence
direct evidence
trace evidence
Investigators collect evidence
without making judgements
on its potential importance
in alphabetical order
only with permission from detectives
Perception is
using your 5 senses
always correct
an interpretation of an observation
not useful
Witness testimony can be faulty
but most witnesses correctly remember events
even though they are convinced of what they saw
until their stress is relieved
unless they are in a positive state of mind
Professionals at a crime scene may include all of the following EXCEPT
police officers/detectives
medical examiners
crime scene investigators
lawyers
Crime scene investigators
document the crime scene and collect physical evidence
conduct interviews
issue search warrants
prosecute suspects
The first step in the seven S's of crime scene investigators is
scanning the scene
searching for evidence
securing the scene
securing and collecting evidence
Evidence that is reliable and valid is said to be
consistent only
properly collected and analyzed only
consistent, properly collected and analyzed
suspect
Faulty eyewitness identification contributes up to ________ of wrongful convictions.
20%
50%
0%
70%
Blood found at a crime scene would be classified as
direct and biological
indirect and physical
circumstantial and biological
direct and physical
Staged crime scenes will contain evidence that is
clearly identifiable as faked
labelled as staged or fake when collected
not consistent with the testimony of a witness
100% reliable
Evidence containers must have ____________ attached to them.
documentation and evidence status
collection record and control sample
evidence log and a chain of custody document
control samples and a procedural number
Reconstructing a crime scene involves
interpretation of evidence by CSI at the time of collection
forming a hypothesis of the sequence of events
excluding trace evidence
witness testimony only
