Exam 8: Forensic Traces

You are tasked with recovering trace hairs and fibers from the exterior of a vehicle that is at the scene of a crime. Which of the following is the most appropriate action?

Special care should be taken when collecting items that contain trace evidence on them. Trace evidence from the body may be microscopic and not readily observed such as ____________.

During a rape the female victim stated that she tore the suspects blue sweater. At the crime scene you recover five blue fibers reported to be the sample the victim ripped from the suspect's sweater. The police arrested a suspect and in the back seat of his vehicle was a torn blue sweater. The items are then sent to the crime lab for comparison. What is the best determination that could be made in assessing if they came from the same single garment?

If you are tasked with collecting computer evidence, which of the following is the most appropriate choice:

You are responsible for the collection of evidence related to a hit-and-run accident. Choose the proper procedure for collecting paint samples from the two vehicles involved.

Which of the following techniques would be the best method for collecting fibers found on the floor at the point of entry at a homicide scene?

The Locard Exchange Principle occurs with regard to statement evidence being used to corroborate or refute physical evidence collected at the crime scene.

Shoes and footwear are valuable items of evidence. In addition to the presence of trace items such as soil, dust, debris, vegetation, and blood the footwear can also be useful in shoe impression comparison and demonstrating directionality.

Referring to the diagram below, choose the correct sequence of bullet impacts to glass. (FIGURE 1)

A suspect is arrested wearing a torn blue t-shirt. The shirt is collected, packaged in a paper bag and sent to the crime lab. At the crime scene of a burglary an investigator collected blue color fibers from the area near a broken window. The investigator packaged the fibers in a small envelope and submitted them to the lab for comparison to the suspect's shirt. All the tests at the crime lab on the evidence fiber and exemplar fibers from the shirt show them to be identical. Therefore, it can be concluded that the blue fiber from the scene definitely came from a unique source, the torn blue shirt worn by the suspect to the exclusion of all others.

The ____________ exemplars must never be packaged with the questioned samples.

In a court of law the unique fit of known and unknown fragments of a broken headlight is important for presenting information that:

A piece of duct tape used to bind the victim was recovered and a roll of duct tape was recovered later from the suspects vehicle. In addition to fingerprints and trace evidence that may be on the tape from the scene, a comparison to the roll of tape may be conducted to see if the piece originated from that roll. Which of the following techniques performed:

When analyzing headlights that are damaged during a hit-and-run vehicle accident there are key characteristics that may provide contextual information about the vehicle at the time of the accident. They are:

Which of the following items would be classified as trace evidence?

Some of the characteristics that a criminalist can provide when examining hair is determining whether it originated from an animal, synthetic, or human; Determine possible body location; or whether it was chemically treated.

Microscopic examination of the hair root may indicate that the hair was forcefully pulled out as opposed to falling out naturally.

When dealing with a homicide victim's clothing, which of the following procedures is the best way to capture any trace evidence?

While investigating a bank robbery you notice that there is significant damage to the vault with cement dust, insulation fibers, and other material throughout the crime scene. You are then notified a suspect was arrested and you respond to the police department to collect evidence from the suspect. You notice similar fibers and dust on the suspect's clothes. Which is the best method to collect the trace evidence?

When trying to determine the direction of force in glass using a concentric edge, the side of the glass forming a right angle with the conchoidal fracture is the side the force came from.