Fragments of physical evidence left behind at a crime scene. Created when objects make contact and material is transferred.
Trace evidence
Name three types of evidence that are appropriate to package in a paper bindle.
hair, fibers, small shards of glass, powdered drugs, chips of paint, dried fluids on gauze
Name two things that should be written on an Evidence Label Form.
Case number, inventory number, item number, collectors name, date, time, location, type of crime, name of victim, name of suspect, description of evidence
All evidence found at a crime scene should be packaged separately. True or false?
True
What type of evidence was found in the case study we read Friday?
Drugs: cocaine rocks
Fingerprints are an example of biological evidence. True or false?
False
Blood can be packaged in plastic containers. True or false?
False. Always use paper.
What should be done at a crime scene before any evidence is handled?
Identify and photograph all evidence
A sample of saliva was collected on gauze and immediately placed in paper packaging. What was wrong with this collection process?
Wet evidence should be allowed to dry before being packaged.
In the last CSI episode we watched, who was found guilty of the murder of Barry?
The counselor: Julia Barrett
Indirect evidence that can be used to imply a fact but that does not prove it
What should pills be packaged in?
Metal pill boxes
What should be done if hair is found trapped in metal or glass?
The hair should be left alone and packaged/processed with the other materials.
Why should biological evidence be kept away from direct sunlight.
Heat and UV radiation can damage DNA.
Besides crime-scene investigators, name two other professionals that mays be present at a crime scene.
Police officers, detectives, medical examiners, specialists
Give one example of direct evidence.
Eye witness accounts, video footage, audio recordings, confessions
What type of evidence should be packed in sealed cans?
Charred debris
Soil can be packaged in plastic containers. True or false?
True
Name two types of evidence that can help determine if a suspect was at a particular location.
Soil, grass, pollen
Physical and biological evidence are both considered to be a type of circumstantial evidence. True or false?
True
Knowing the blood type of a blood sample would be considered individual evidence. True or false?
False. It narrows it down to a group of people, not and individual.
Who is responsible for collecting nail scrapings from a suspect or victim?
Medical Examiners
Material of a verifiable source which, when compared with evidence of an unknown source, shows an association between a suspect, crime scene, and/or victim.
Standard/ reference sample
What type of microscope is best for examining surface details of pollen evidence?
Electron microscope
Ensures tracking of the evidence as it passes from the crime scene to the courtroom.
Chain of Custody