Question 1

Which description best describes Jenkin's daughter?

Accepted Answer

The passage states that Jenkin's daughter is named Cheyenne (A), attends UCLA (B), and is about the same age as Chang (C). Therefore, all three choices are correct.

Question 2

As the two of them were having lunch at "The Pot Sticker" restaurant, Jenkins remarked "Where do you put it all Miss Chang?" Chang's response was…..

Accepted Answer

D

Question 3

Jenkins was having difficulty eating his food. What was the reason?

Accepted Answer

Jenkins was having difficulty eating his food because he was not that skilled at using chopsticks.

Question 4

What is The Nuts and Bolts of It?

Accepted Answer

"The nuts and bolts of it" is a phrase often used to describe the basic or essential components of something, typically in a mechanical or technical context. Therefore, it makes sense that the correct answer is a mechanic's garage.

Question 5

Helen pondered over her social life and reasoned she would never find the "right guy." What was her rationale?

Accepted Answer

The rationale that Helen gives is that guys would not be attracted to someone who studies DNA and that most guys don't go for smart girls. Both of these reasons fall under choice 'a' and 'c'.

Question 6

What was the purpose of visiting The Nuts and Bolts of It?

Accepted Answer

The purpose of the visit was to interview the employees about Erica (Choice 'b') and to determine how long Erica worked that day (Choice 'c'). It is not mentioned in the text that the purpose of the visit was to see what type of auto service the business provides, so choice 'a' is incorrect. Choice 'd' includes both choices 'b' and 'c', making it the best option.

Question 7

According to the receptionist at the auto shop…

Accepted Answer

The receptionist stated that Erica was at work at least until 5 pm that day, which eliminates options A, C, D, and E. Therefore, the best choice is B.

Question 8

What did Jenkins discover at the auto shop?

Accepted Answer

Jenkins discovered a spent shell casing, which is a piece of evidence that could be related to a firearm being discharged at the location.

Question 9

What is the significance of finding this firearms evidence at Erica's workplace?

Accepted Answer

Finding firearms evidence at Erica's workplace could potentially match back to Samdeep's firearm and suggest his involvement in her shooting.

Question 10

The gun found in Sam's truck was registered to….?

Accepted Answer

The gun found in Sam's truck was registered to Sam O'Neill, indicating ownership and potential legal responsibility for its presence in the vehicle.

Question 11

As they drove away from the garage, Jenkins was instructing Chang on something she was not comfortable with….

Accepted Answer

The answer of As they drove away from the garage,...

Question 12

(a) What is the central idea in this chapter and (b) what significance role might this piece of evidence play in this missing persons case?

Accepted Answer

The answer of (a) What is the central idea in...

Question 13

A spent shell casing or spent bullet…

Accepted Answer

A spent shell casing or spent bullet can provide information about the type of firearm used at a crime scene, can be compared using a reference bullet fired from the same weapon, and can be potentially traced back to the firearm from which it originated from. Therefore, choices 'a', 'b', and 'c' are correct.

Question 14

The function of rifling marks manufactured into the barrel of a firearm is to impart…..

Accepted Answer

Rifling marks create grooves inside the barrel of a firearm which causes the bullet to spin as it is fired. This spin stabilizes the bullet in flight, providing better accuracy and trajectory.

Question 15

Which forensic tool is used to identify a spent bullet/shell casing to a weapon?

Accepted Answer

Comparison microscope is the forensic tool used to identify a spent bullet/shell casing to a weapon. It allows the examiner to simultaneously view the evidentiary item and a known specimen side by side, allowing for direct comparison and identification of similarities or differences.

Question 16

In order to create a reference bullet the weapon is shot into a

Accepted Answer

A water tank is the best choice as it simulates the density of a human body and allows for more accurate analysis of the bullet's characteristics.

Question 17

Which of the following terms are markings that can be measured or observed off of a spent bullet and/or shell casing?

Accepted Answer

All of the given terms are markings that can be measured or observed off of a spent bullet and/or shell casing. Lands and grooves refer to the rifling inside the gun barrel, direction of the twist refers to the direction in which those grooves twist, caliber is the diameter of the bullet or bore, striations are marks on the bullet made by the barrel, and firing pin impression and breech face markings are unique marks made by the firearm's firing pin and breech face respectively.

Question 18

Which describes the sequence of events when a firearm is discharged? 1) primer ignites the gunpowder
2) gunpowder explodes
3) Firing pin impacts primer cup
4) bullet moves down the gun barrel
5) bullet is expelled from the shell casing

Accepted Answer

The correct sequence of events when a firearm is discharged is: 1) the primer ignites the gunpowder, 2) the gunpowder explodes, 3) the firing pin impacts the primer cup, 4) the bullet moves down the gun barrel, and 5) the bullet is expelled from the shell casing. Therefore, sequence C is the correct order of events.

Question 19

Spent shell casing found at a crime scene might be able to provide

Accepted Answer

Spent shell casings found at a crime scene can provide valuable information to investigators. They can potentially indicate:
a. Where the assailant was standing: The location of shell casings can give an idea of the shooter's position, as casings are typically ejected from a firearm in a predictable pattern and direction. However, it should be noted that casings can be moved or affected by external factors such as the environment or secondary impacts.
b. Where the assailant was facing: The direction in which the casings are ejected can sometimes suggest the direction the shooter was facing, although this is less reliable than other indicators due to the many variables that can affect the trajectory of a casing after ejection.
c. Type of weapon used at the crime scene: The size, shape, and markings on a spent shell casing can help identify the caliber of the weapon and potentially the make and model of the firearm used. This is because different firearms leave unique markings on the casings they eject, which can be matched to specific types of weapons.
Given the information above, the correct answer is:
d. Choice 'a', 'b', & 'c' are correct.
Spent shell casings can indeed provide clues about the assailant's position, the direction they were facing, and the type of weapon used during the commission of a crime. However, the interpretation of this evidence should be done carefully and ideally by a forensic expert who can account for the various factors that might influence the final resting place and condition of the casings.

Question 20

Explain how the process of identifying a spent bullet and a spent shell casing are similar and different.

Accepted Answer

The answer of Explain how the process of identifying a...

Quiz 8: Ballistics