Crime Scene Basics
This is the first officer’s duty upon arriving at a crime scene
What is securing the crime scene?
This type of evidence is left behind when someone walks through mud or blood
What are impression marks?
This field of forensic science studies the effects and presence of drugs, alcohol, and poisons.
What is forensic toxicology?
This is the scientific term for the stiffening of muscles after death
What is rigor mortis?
This school from which Mr. Zavala received his Bachelor's.
What is the University of Texas at Austin?
Evidence that is wet or moist should be stored in these types of evidence bags
What is a paper evidence bag?
The part of the hair that must be present for DNA testing
What is the root or follicle?
Forensic scientists use this in order to understand the events of which a crime took place
The body cools after death through this process
What is algor mortis?
This is the branch of the military Mr. Zavala serves in
What is the U.S. Army Reserves?
Investigators create this visual document to show dimensions and locations at the scene
What is a crime scene sketch?
These microscopic ridges found on fingers can be categorized as loops, whorls, or arches
What are fingerprint patterns?
These are two key visual signs of an accelerant-based fire at a crime scene
What are burn patterns and V-shaped char marks?
These insects show up approximately 24 - 48 hours after a dead body has been exposed to the outside environment
What are blowflies?
The first job Mr. Zavala had at Cathedral
What is a substitute?
This document tracks the movement and handling of evidence
What is the chain of custody?
A broken glass window can be analyzed using this physical property to compare to suspect clothing
What is refractive index or density?
This forensic technique helps triangulate the flight path, direction, and angles in which a bullet was fired.
What is ballistic trajectory?
Part of bodily decay in which the body begins to decompose, tissue liquefies, and odor is released
What is Active Decay?
This is the high school from which Mr. Zavala graduated from.
What is America's High School?
This principle states that every contact leaves a trace
What is Locard’s Exchange Principle?
This evidence illuminates bright blue when sprayed with luminol
What is blood spatter?
A low explosive, such as black powder, results in the flame traveling slower than the speed of sound
What is deflagration?
Small dots that form under the eyelids due to the capillaries bursting and a lack of oxygen in the tissue. This is commonly formed due to hanging or strangulations
What is petechiae?
Who is Rudy Alexander Zavala?