FIS 201 Unit Four
the obliterating ink absorbed light better at 1400nm than the original ink did
A document has a large black redaction in the middle of it. Using the video spectral comparator at a wavelength of 1400nm, we can determine that the document originally said "alien remains stored at Groom Lake".What do we know about the physical properties of the inks?
RAM
A few years ago, Target suffered a huge data breach when credit & debit card information was captured in real time as people swiped their cards. This suggest that which type of memory was targeted for collection by the criminals
the absorption rate of fentanyl
A man is found dead of an apparent accidental fentanyl overdose, with a blood concentration of 22.7 ng/mL of blood. What would a toxicologist need to know about fentanyl to determine when the dosage was taken
schedule 1
A new drug from China causes you to feel super energetic and happy. It makes it unsafe to drive or operate machines like a toaster oven, and is commonly taken by young people. Doctors don't know what to do with it. Given that information, how should this new drug be scheduled
cannabis
A plant derived drug with complex effects; primarily smoked
Ritalin (a treatment for attention deficit disorder) Nicotine (a plant product found in tobacco) Fumocoumarin (an alkaloid produced by some root vegetables)
A toxicologist would be involved in the identification and quantification of which of the following materials
targeted
A wife believes that her husband has been carrying on an illicit affair, and deleting any text messages he receives from his side chick. What method should an investigator use to recover these messages
accidental
A woman believes that her "she shed" has been burned down, and investigates. She finds no evidence of ignitable liquid use, and narrows down the point of origin to an overloaded power outlet serving the entire shed.Based on this information, how should the fire be classified?
it is impossible to determine with this test
A woman believes that she has been sexually assaulted after someone added rohypnol (a benzodiazepine) to her drink. However, she has also been prescribed Xanax for anxiety. If a blood test comes back positive for benzodiazepines, what would you believe
method and manner
After finding two victims with elaborately knotted ligatures around their throats, investigators believe that a serial offender is active in their area. Which aspect of the homicide are they looking at
microprinting
All of the following are typically used to identify the printer/creator of a document except micropritning TTI steganography watermark
it could show that a suspect document came from a particular pad or notebook it could be used for handwriting identification
An ESDA film lift could show which of the following pieces of information
air
Argon fire suppression systems work by flooding an area with inert argon gas. Which aspect of the fire triangle does this fire suppression mechanism knock out?
methamphetamine heroin
At a crime scene, you find used syringes. What are some likely candidates for drug use?
cocaine
At an investigation, you find some white powder. You supply Scott Reagent, which immediately turns blue. What drug do you likely have?
clinical psychologist
At trial, a defendant claims that head trauma caused them to be unable to control their anger. What sort of expert would be most helpful in explaining (or disproving) this claim to the jury
2
Based on the image, what is the maximum number of canvases using identical ink
faraday cage
Cell phones should be packaged in a { } in order to prevent them sending or receiving wireless signals
the objects stolen
Consider the following series of crimes. Which aspect of the m.o. suggests they might be linked? #1: A late-afternoon home invasion in a rural area. The front door is kicked in. An iPad, an Xbox 360, jewelry, and a 60" tv is stolen. #2 An car is burglarized in the Target parking lot at about 8pm. A Galaxy 10 cell phone and Beats headphones are taken. #3: A man is mugged at approximately 2am on Saturday night walking home from the bar. He is physically assaulted, and his iPhone, iPods, and Apple watch are taken.
benzodiazepines
Drugs primarily used to treat anxiety
hallucinogens
Drugs which are used to alter perception or consciousness
heroin
During an arrest, police officers find the materials shown below in the arrestee's pockets. What drug is this likely to be?
CO2 H2O Heat and Light
Ethanol has the formula of CH3CH2OH. When it combusts, what are the products of combustion
charge conducted by a floating gate
For data stored as flash memory, what represents the 1s and 0s of the binary code
cocaine
Highly addictive stimulant drug, natural plant product
I have made a 100% complete copy of the data on the seized hard drive
I am extracting evidence from a seized hard drive. I attach the write blocker, and use a hash algorithm to create the following signature string: dbf1cb1ec3dbc6d74cb5ef9182e7fbf8 I copy the information onto a blank hard drive, and run the same algorithm to create the following signature string: dbf1cb1ec3dbc6d74cb5ef9182e7fbf8 What conclusion should I draw from these results
gas chromatography
I have a sample of street cocaine that I believe to be cut with a variety of other materials. Which would be the appropriate test to figure out what all is in my syringe.
TNT semtex ANFO
Identify the common secondary explosives
they will go to mental rehabilitation before beginning their prison sentence
In general, a person found "guilty but insane" will experience which outcome
the gasoline will ignite
Let's say you want to play with fire, and set out containers of the following substances: Unleaded gasoline, which has a flash point of -43°C. Diesel fuel, which has a flash point of 52° Highly refined kerosene, which has a flash point of 38°C The ambient temperature in the room is 25°, and you use a striker to produce a spark in the air. What happens immediately? (assume that the three liquids don't affect each other)
trash marks
Marks left by copiers are called
the person may have been over the limit
Maximum allowable BAC for a driver in West Virginia is 0.08%. A calibrated breathalizer has an error rate of +/- of 0.003, meaning that the measurement displayed may be up to 0.003 above or below the actual BAC. This breathalizer shows a value of 0.081. What is our conclusion?
opiates and opioids
Natural or lab-produced drugs used for physical or emotional pain
deflagration low explosive
Nitrocellulose is the primary propellant in modern firearms cartridges. When it violently reacts with the air, it does so through subsonic heat transfer. We can describe this reaction as [a], which makes nitrocellulose a [b]
primary high explosive
Nitrosoguanidine detonates when heated to 165°F , when slid across rough surfaces, or when dropped from a height of approximately 10 feet. How should it be classified
exothermic chemical reaction
One method of making illicit meth is called "shake and bake". During the process, bottles become hot enough to start fires. What is our source of ignition energy?
investigative
Over several months, a series of women in Des Moines, Iowa are physically (but not sexually) assaulted. The women are predominantly Caucasian, and all are at least 5'9" tall. Investigators conclude that the culprit is probably a man under 5'6" with a physically dominating or abusive partner, living in greater Des Moines. What type of profiling have our investigators demonstrated
amphetamines
Pills (mostly) used for stimulant and happy-feeling puposes
it was probably homemade
Post-blast analysis of explosives residues show large quantities or urea and nitrate. What do these results suggest about the explosive device
THC
Recently, most states have legalized cannabinoid consumption, so long as it does not contain more than 0.3% of the significantly psychotropic cannabinoid
disorganized visionary
Richard Trenton Chase killed 6 people in the late 1970s. During his trial, he admitted to walking down an empty street checking for unlocked doors. The first unlocked door he found, he went in and killed whoever was inside with a kitchen knife. He would then drink the victim's blood, as he believed his aorta had been stolen during a childhood surgery. He would be considered a [a] serial killer with a [b] motivation pattern
he shares many developmental characteristics with known serial offenders
Simon Pervinkle is a fifteen year old transgender boy, with a 3.7 GPA. He experienced significant sexual abuse by his uncle from the age of 5-9. At 10, he was suspended from school for attempting to set the women's restroom on fire. Based on what we know about Simon, what is an accurate statement
false
T/F-Ecstasy (MDMA) is in the psychoactives/hallucinogen family, but meth is in the amphetamine family
false
T/F-Inks and pigments that are the same objective color must be made of the same materials
true
T/F-Ritalin and percoset are controlled substances, but people can use them legally as long as they have a prescription from a medical doctor
true
T/F-The primary means of detecting ignitable liquids at a fire scene is scent
18
The LD50 of amobarbital is .06 g /kg of body weight. Each pill contains .2 g of amobarbital. If you weight 60 kg, how may pills could you take before hitting the LD50? (please report only the number of pills)
urine immunoassay
The correct presumptive test for percoset (an opiate pain medication) would be
ii iii iv
The picture is of real TLC plate results comparing several common inks. Which inks probably share a pigment component with A
false
The presence of gasoline at a fire scene would automatically make it an incendiary fire
the device and its residues are often very difficult to locate
The primary challenge of explosives analysis is
actuarial tests
This personality assessment tool uses specific variables such as age, sex, or prior criminal conviction to predict the likelihood of a behavior
they can show that two documents were produced at the same time
Trash marks can show what piece of information
true
We are able to recover digital data because even though we need a computer to decipher it, the information exists in the physical world
the amount in the blood will be lower than it was at the time of death
We are testing a decedent's blood to determine if they died of an Ecstasy overdose. The person has been dead for two weeks. Due to the age of the corpse, postmortem redistribution will have what effect on the amount of Ecstasy we detect in the blood?
identify types of chemical bonds in the molecule
What do the peaks in Raman spectroscopy indicate
the account information for a network subscriber
What information is captured by a SIM card
inhalation
What is the most common means of consuming cannabis products
it helps eliminate background noise from the burned debris
What is the purpose of headspace analysis in fire evidence
shock wave
When a human or animal is exposed to an explosion, it is not uncommon for the lungs and eardrum to rupture due to the sudden pressure changes. These harms are caused by which aspect of the explosion?
watermark
When the dandy roll presses a pattern into wet pulp, a { } is formed
time peak size
When using the gas chromatograph (GC) to determine someone's BAC, the we must have a peak emerge at the correct [a] to demonstrate that ethanol was present, and the [b] demonstrates the amount of the drug present
THC
Which drug or drugs did the person test positive for according to the test
an electric impact typewriter
Which form of machine markings would generally be easiest to individualize to a particular machine
GPS signal
Which method of phone-based location tends to be the most accurate
ion mobility spectronomy
Which method provides the fastest, easiest method of explosives residues identification, even if it is somewhat susceptible to false positives
it is written by the claimed author
Which of the following QDE tasks is the most subjective?
paint thinner starting fluid nail polish remover
Which of the following would be considered ignitable liquids?
a letter in an envelope
Which type of document would be best for recovering DNA from
the pigments do not dissolve easily into solvents
Why is thin layer chromatography generally a poor choice for analysis of pigment based inks and toners
time identity of the chemical the amount of the chemical
With a gas or liquid chromatograph, the location of the peak on the x-axis is measured in { }, and indicates the { }. the size of the peak indicates { }.
ion size part of the molecular structure how common that fragment is
With a mass spectrometer, the location of the peak on the x-axis tells us the { }, and indicates { }. The size of the peak tells us { }.
restore the file directory system
You accidentally delete your 10 page term paper (235kb) from a USB drive and plugged it into a different computer. What's your best bet for recovery
blood
You are admitted to the hospital with a low body temperature, shallow breathing, slow heart rate, and pin-prick pupils. Doctors assume that you have overdosed on heroin, but need to know how much you've taken in order to effectively treat you. Which material should they test
different IR and UV reflection from the paper around the corrected area
You are filling out an application for an apartment, when you realize you made an error in your social security number. You use an stiff eraser to clear away the error and write the correct number down. If we were to look at the application under the VSC, what would it detect
IP address if your modem
You get a DMCA violation from Disney after illegally downloading Frozen 2. How did they know who you are
explosion
You inflate a balloon until it ruptures. This release of energy would be classified as
ricin
___ is a potent nerve poison that can be produced from the castor bean (aka castor oil) plant
