Observations & Evidence
This method involves stating the problem, proposing a hypothesis, conducting an experiment, collecting data, and critically analyzing the data.
What is the scientific method
Hair is this kind of evidence
What is class evidence
Hair, fur, and hemp are all these type of fibers.
What are natural fibers
Fingerprints are this type of evidence.
What is individual evidence
The acronym for this important factor is PMI
Postmortem interval
What is separate witnesses at the crime scene?
Impricate, coronal, and spinous represent different types of shapes on this part of the hair.
What is the cuticle
This fiber's ability to reflect light lends to its shiny nature.
What is silk
This type of print is left on a smooth surface and visible to the eye
What is a patent print
This developmental stage of a fly or beetle can have several instars
What is the larva stage
This principle implies that fibers can be transferred from one person to another and soil samples can be carried from the yard into your home.
What is Locard's Principle of Exchange
Width of the cuticle and width of the medulla are used to calculate this.
What is the medullary index
Fibers are spun into thread/yarn and this is then turned in textiles of these different types of patterns.
What are weave patterns
Fingerprints come from this characteristic skin pattern on your fingertips
What are friction (dermal) ridges
Because houseflies are attracted to urine and feces, they may be indicators of this.
DNA is considered this type of evidence
What is individual evidence?
This part of the hair can be analyzed for nuclear DNA.
What is the follicle or root
Asbestos and fiberglass are considered this type of fiber.
What is mineral fiber
This is the most common ridge pattern in fingerprints
What is a loop
The temperature of this mass is also taken at the crime scene in addition to the ambient temperature
What is the maggot mass
This is how our brain processes observations from our senses after we've filtered out and processed what we want to pay attention to.
What is perception
This is the number of hair samples needed to compare hair found at a crime scene.
What is 50
This technique can be used to determine the chemical composition of a fiber
What is GCMS (gas chromatography mass spectrometry)
The acronym for this database is IAFIS
What is the International Automated Fingerprint Identification System
These gases are detected by blowflies shortly after death
What is putrescine and cadaverine