Forensics Post Test Review

FORENSICS POST TEST REVIEW

By JAMARIS WESTERBAND ROSARIO

Post Test Review - Read and take notes

1. A forensic scientist is called to a court of law to provide facts.

2. The Innocence Project found that most faulty convictions were based on inaccurate eyewitness accounts.

3. The Locard's Principle accounts for the transfer of trace material during a crime.

Post Test Review: Read and take notes

4. A crime scene sketch should include all of the following:

   1. a scale of distance

   2. a north heading on the diagram

   3. date and location of the crime scene

5. Correct collection of evidence requires: FIRST correct packaging of the evidence and then maintaining proper chain of custody.

Post Test Review - Read and take notes

6. Class evidence has characteristics common to a group of similar objects. For example: black hair, loop type fingerprint.

7. Fingerprints are formed at 17 weeks gestation.

8. The use of fingerprints in identification is not perfect because the current technology depends on humans to input and analyze the information, and human mistakes.

Multiple Choice

The use of fingerprints in identification is not perfect because ___.

• people can easily change their fingerprints

• people can easily change their fingerprints

• the current technology depends on humans to input and analyze the information, and human mistakes

• all the above are correct answers

Multiple Choice

Fingerprints are formed ___.

• at 17 weeks gestation

• at 10 weeks gestation

• shortly after birth

• at about two years of age

Multiple Choice

A forensic scientist is called to a court of law to provide ___.

• fact

• judgement

• opinion

• reflection

Multiple Choice

Which principle accounts for the transfer of trace material during a crime?

• Deductive Reasoning Principle

• Locard's Principle

• Coulomb's Principle

• Pauli's Principle

Multiple Choice

A crime scene sketch should include all of the following EXCEPT ___.

• the type of search pattern used to collect the evidence

• a scale of distance

• a north heading on the diagram

• date and location of the crime scene

Multiple Choice

The Innocence Project found that most faulty convictions were based on ___.

• poor DNA sampling

• inaccurate eyewitness accounts

• out of date investigating equipment

• officers not thoroughly observing a crime scene

Multiple Choice

Correct collection of evidence requires which of the following?

• correct packaging of the evidence

• protecting from the perpetrator

• maintaining proper chain of custody

• documenting the location where the evidence was found

Post Test Review - Read and take notes

9. Forensic scientists analyze the following from shoe impressions:

   1. tread patterns, size, and depth

   2. material defects or damage (nicks, cuts, etc.)

   3. wear patterns caused by the way a person walks

10. Forensic odontology is the study of analyzing bite marks for characteristics to help identify victims or suspects, as well as exclude others.

Post Test Review - Read and take notes

11. Striations are the typical marks from the inside of a gun barrel.

12. GSR - material that can be detected if a person has recently fired a gun.

13. The caliber of a bullet is related to its diameter.

Post Test Review - Read and take notes

14. The hair shaft is composed of the cuticle, cortex, and the medulla.

15. Neutron activation analysis can check hair for the presence of silver.

16. Natural fibers can be harvested from both plants and animals.

Read and take notes

17. In examining a glass fracture pattern, the radial lines are cracks that extend out from the point of impact.

Read and take notes

17. Blood proteins that determine blood type are on the surface of the cell membrane.

18. Round droplets = blood dripping from above.

19. STR = The current method of DNA typing used by most crime labs

Go to NEARPOD

​Read and take notes

20. A naturally occurring or manufactured substance that can cause severe harm or death is a poison.

21. Mass spectrometer is a machine are used by a toxicologist in a forensic lab.

Multiple Choice

A naturally occurring or manufactured substance that can cause severe harm or death is a ___.

• controlled substance

• drug

• narcotic

• poison

Multiple Choice

Which of the following is NOT considered a toxic substance?

• heavy metal

• aqueous

• pesticide

• poison

Multiple Choice

Which of the following machines are used by a toxicologist in a forensic lab?

• electrophoresis

• luminol

• mass spectrometer

Read and Take Notes

Entomology - Scientists use insects and their behaviors to identify postmortem interval.
Algor Mortem = Temperature change
Livor Mortis = Blood pooling
Rigor Mortis = Stiffening

Multiple Choice

Which of the following describes how forensic entomology can help solve a crime?

• Scientists use blood to identify spatter and directionality.

• Scientists use insects and their behaviors to identify postmortem interval.

• Scientists use bones to identify the approximate age of a body antemortem.

• Scientists use chromatography and spectroscopy to identify the types of toxins present

Multiple Choice

What is the stiffening of muscles that occurs approximately two to thirty hours after death called?

• algor mortis

• livor mortis

• PMI

• rigor mortis

Multiple Choice

Which of the following is correct about coroners, medical examiners, and forensic pathologists?

• A forensic pathologist's responsibilities include identifying the body, notifying the family, collecting and returning personal items of the deceased, and issuing a death certificate

• A medical examiner does not have to be a physician.

• A coroner performs autopsies on people who die suddenly, unexpectedly, or violently.

• . A medical examiner is a medical doctor who oversees the death investigation and performs autopsies.