What do you Observe?
Your brain tells you what you see, hear, taste, smell, feel.
What are observations
DNA is considered which type of evidence
WHat is Individual or biological evidence
This is the principle that states every contact leaves a trace
What is Locard's principle
Human hair has this pattern
What is imbricate
The two types of fiber are.....
What are natural and synthetic fibers
A person who is called to the stand to state their opinion and facts based on their expertise
Who is an expert witness
This is the first person to arrive on the scene and must do what?
what are Police officers; secure the crime scene
Odors and very cold temperatures are considered this type of evidence
What is transient evidence
Pig hair differs from human hair because of which middle part?
What is the medulla
What is most important about fibers to investigators?
What is fiber uniqueness
This is when an eyewitness statement is most reliable...
What is when more than one witness has the same story and statements as the eyewitness account
This is when 3 photographs are taken at 3 different angles from left to right
WHat is overlapping
Evidence that can lead back to a group of people is considered ______________ while evidence that leads back to a single person is considered ______________
What are class and individual
Name the 3 parts of hair
what are the cuticle, cortex, medulla
The difference between cotton and wool
Three things that affect our perceptions
What are emotional state, opinions, morals
After securing the crime scene and separating witnesses, the CSI team must do what?
What is take photographs of the crime scene
Whoever touches and examines the evidence must sign the bag. They must open from somewhere other than the original seal. When finished, they must seal the location they opened and sign. This is known as _____________________
Hair evidence can tell investigators what about the victim or suspect it came from?
What are the color of natural hair, if hair was dyed, if human or non human, ethnicity, toxins, and location hair came from
Natural fiber and synthetic fiber differences
what are natural fibers come from plants and animals while synthetic fibers are manufactured (man made)
Forensic Scientists and other expert witnesses must have this before going onto the stand during trial.
What is documentation of evidence examined
How can investigators ensure ALL evidence is found, photographed, and collected properly?
What is conduct a search method (grid, line, spiral, zone)
Two different eyewitnesses stated they saw a tall, white male, with red shorts and a white t-shirt leave Taco Bell with a gun in his hand at 4pm on Saturday. The robbery of Taco Bell occurred at 3:50pm on Saturday. These eyewitness statements are considered.......
direct evidence and reliable because they match
A CSI found hair evidence at the crime scene of a murder. After lab results came back, the hair was found to have an imbricate type pattern, dark color, and medullary index of 0.50mm. What type hair was found and how do you know?
What is Non human. Greater than .33mm medullary index
Fiber that is not self extinguishing, smells like burnt meat, burns and melts, leaves hard black irregular beads after burning
What is acrylic