Forensic Science 100 question exam!

the shaft of the hair is considered class evidence in a trial: a. true b. false

a. true

the smallest unit of textile is called a fiber: a. true b. false

a. true

the term forensic science refers to the application of science to solve crime: a. true b. false

a. true

which of the following is considered an animal fiber? a. wool b. cotton c. hemp d. fiberglass

a. wool

which of the following evidence is considered to be biological? a. impressions b. fingerprints c. shell casings d. hair

d. hair

most arsons are committed with the intentions of ________________? a. crime concealment b. pleasure c. murder d. insurance money collection

d. insurance money collection

a search of the fire scene begins with: a. collection of accelerants b. looking for witnesses c. questioning suspects d. looking for a point of origin

d. looking for a point of origin

according to the Steps of Crime Scene Investigation, which of the following steps should follow the first responders "securing the scene"? a. sketching the scene b. seeing the scene c. scanning the scene d. separating witnesses

d. separating the witnesses

which of the following is NOT considered an exemption to the requirement for a search warrant? a. a bag of pot is laying on the passenger seat of your car during a traffic stop b. a person gives the police officer permission to search his/her car c. you've been arrested and they want to search you d. your neighbor reports to the police that he has seen you selling drugs from your house

d. your neighbor reports to the police he has seen you selling drugs from your house

any compound consisting of only carbon and hydrogen

hydrocarbon

length: a. macroscopic b. microscopic

a. macroscopic

pigment: a. macroscopic b. microscopic

a. macroscopic

the cortex of the hair contains pigment (color): a. true b. false

a. true

what amendment protects against illegal search and seizure?

4th amendment

what amendment prevents double jeopardy?

5th amendment

what amendment requires the use of a grand jury in difficult/publicized/capital cases?

5th amendment

what amendment allows witnesses in court?

6th amendment

what amendment provides for the opportunity of a speedy trial?

6th amendment

the hair shaft is composed of the cuticle, cortex, and _____________? a. medulla b. root c. crown d. follicle

a. medulla

which of the following is NOT considered to be a natural fiber? a. rayon b. animal c. plant d. mineral

a. rayon

the innocence project is an organization that seeks to exonerate wrongfully convicted people: a. true b. false

a. true

describes what must be established to be an expect witness is the:

Daughbert Ruling

general acceptance of science is the:

Frye Standard

an officer knock's on the door to questions a suspect, then the officer races upstirs to stop the destruction of drug evidence because he hears the toilet flushing. This drug can be admitted in court, even without a warrant. a. true b. false

a. true

fibers can be considered both physical and biological evidence: a. true b. false

a. true

opinions from the witness are normally not allowed in court, except in the case of an expert witness: a. true b. false

a. true

According to the chain of custody, which of the following must be done when working with evidence? a. sealed evidence must be opened at a location other than the sealed/signed edge b. sealed evidence must remain in its container for 7 days c. sealed evidence must never be opened by more than one person d. sealed evidence must be carefully opened at the seal/signed page

a. sealed evidence must be opened at a location other than the seal/signed edge

which of the following is NOT a way of investigators identify accelerants? a. searching for the smell of gasoline b. portable hydrocarbon detectors c. identifiable pour patterns (that are then tested) d. accelerant sniffing dogs

a. searching for the smell of gasoline

when packaging evidence, which of the following is NOT a procedure that should be followed? a. the evidence approved by a judge b. the evidence much be dried if its wet c. the evidence must be placed in a bindle if its really small d. the evidence must include a signature of the person who received it

a. the evidence approved by a judge

synthetic fibers are made from man-made substances: a. true b. false

a. true

Burning an abandoned building or an abandoned area, such as a field, forest or woods is an example of: a. 3rd degree felony b. 4th degree felony c. 2nd degree felony d. 1st degree felony

a. 3rd degree felony

in which court decision was it realized there needed to be a "general accepted" standard for admitting scientific evidence? a. Frye Standard b. Daughbert Ruling c. Federal Rule Number 702 d. none of these listed

a. Frye Standard

a crime scene investigator packages and records all data for an evidence sample and then gives the sample to the delivery person. The delivery person takes the sample directly to the evidence room where the officer there records his own information and signs the package. what protocol has been broken? a. chain of custody b. cross contamination c. control issues d. no protocols have been broken

a. chain of custody

How should arson evidence be packaged? a. in airtight containers b. wrapped in foil c. in paper bags d. in plastic bags

a. in airtight containers

curl: a. macroscopic b. microscopic

a. macroscopic

a material used to start or sustain a fire is :

accelerant

what fiber is silky, luxurious appearance. it dries easily and resist absorbing moisture?

acetate

what fiber is inexpensive, tends to "ball" easily, and used as an artificial wool and fur?

acrylic

the criminal act of deliberately starting a fire is:

arson

Burning an occupied structure such as a school or a place where people are normally present is a: a. 2nd degree felony b. 1st degree felony c. 4th degree felony d. 3rd degree felony

b. 1st degree felony

the burning of an unoccupied building or an unoccupied house or other structure in order to claim insurance on such property is known as: a. 1st degree felony b. 2nd degree felony c. 3rd degree felony d. 4th degree felony

b. 2nd degree felony

which principle of Forensics states that fibers can be transferred during criminal activity? a. Manson standard b. Locard's Exchange principle c. Frye standard d. Daubert principle

b. Locard's Exchange Principle

which famous political leaders hair analysis determined that he may have died from a poison called arsenic? a. Hitler b. Napolean c. Alexander the Great d. Stalin

b. Napolean

which of the following pieces of evidence would most likely be considered individual evidence? a. the car keys b. a hair sample c. a ransom letter d. eye witnesses

b. a hair sample

Locard's exchange principle implies all of the following except: a. fibers can be transferred from one person to another b. blood spatter is used to identify blood type c. cat hair can be transferred to your pants d. soil samples can be carried from the yard into your home

b. blood spatter is used to identify blood type

the documented and unbroken transfer of evidence is known as ??? a. Locard's Exchange Principle b. chain of custody c. Frye Standard d. Daubery Ruling

b. chain of custody

A murder suspect is found innocent of killing his wife. Two years later, police officers find her DNA from blood in the trunk of his car. The prosecution can proceed with a new case against him: a. true b. false

b. false

Wayne Williams was convicted of murdering the children in the Atlanta Child Murders: a. true b. false

b. false

all hairs on the head of a person are identical: a. true b. false

b. false

an officer is arresting someone an finds an illegal drug in his pocket. this evidence cannot be used in the court because the officer did not have a search warrant: a. true b. false

b. false

any important eye witness is allowed to repeat in court what someone else told them: a. true b. false

b. false

eye witness accounts are always accurate: a. true b. false

b. false

fibers are easily matched/identified in a criminal investigation and always aid in catching criminals: a. true b. false

b. false

good observation skills come naturally to investigators, they do not need to be trained: a. true b. false

b. false

hair is composed of a protein called creatine: a. true b. false

b. false

if a witness remembers seeing something happen, we can trust that it happened exactly how they said it happened: a. true b. false

b. false

if two or more people live at the same apartment, one tenant is allowed to give permission to search the whole apartment, even without the other tenant present: a. true b. false

b. false

most cases go to trial and only about 25% of cases are plea bargained and never go to trial: a. true b. false

b. false

of you are served a subpoena to appear in court, you're allowed to simply choose not to appear: a. true b. false

b. false

the typical fire burns in an X pattern and moves upward in search of oxygen: a. true b. false

b. false

which of the following is NOT a member of the crime scene investigation team? a. police officer b. judge c. detective d. medical examiner

b. judge

cortex: a. macroscopic b. microscopic

b. microscopic

cuticle: a. macroscopic b. microscopic

b. microscopic

medulla: a. macroscopic b. microscopic

b. microscopic

which of the following are considered MACROSCOPIC properties of hair? CHOOSE ALL THAT ARE CORRECT a. cuticle b. pigment c. curl d. medulla e. keratin f. cortex g. length h. follicle

b. pigment c. curl g. length

If combustion is to be initiated and sustained, all of the following elements must be present except: a. the presence of oxygen b. the presence of carbon monoxide c. the presence of heat d. the presence of fuel

b. the presence of carbon monoxide

why is hair mostly considered class evidence? CHOOSE ALL THAT ARE CORRECT a. because its characteristics can be linked to a certain class of people b. without the follicle, it cant be linked to an individual c. hair can only indicate a racial group/sex/age; therefore, can only be matched to a class of individuals

b. without the follicle, it cant be linked to an individual

what's the medullary index of a strand of hair with the following measurements? width of the medulla= 1 micron width of the hair shaft= 3 microns a. 3 b. 0.5 c. 0.3 d. 0.75

c. 0.3

according to our notes on the 6th amendment, once arrested a defendant has how long to be arraigned, told what she/he is charged with, and offer his/her plea? a. 90-170 hours b. 24 hours c. 72 hours d. there is no set time

c. 72 hours

how would a set of keys be classified? a. biological evidence b. direct evidence c. class evidence d. individual evidence

c. class evidence

which is NOT a role of an arson investigator? a. scene recreation b. identify accelerants c. extinguishing fires d. collect evidence

c. extinguishing fires

what test can be preformed on a fiber to determine the identity of the fiber? a. chemical fiber b. fiber pH analysis c. fiber burn analysis d. presumptive test

c. fiber burn analysis

The Innocence Project found that most faulty convictions were based on: a. out of date investigating equipment b. untrained crime scene techs c. inaccurate eye witness accounts d. officers not following the 7 S's of a crime scene investigation

c. inaccurate eye witness accounts

which is the following CSI team member is responsible for declaring the cause of death when a homicide occurs? a. detective b. crime scene technician c. medical examiner d. first responder

c. medical examiner

the reason that it is important to separate witnesses at a crime is too ?? a. prevent contamination of the evidence b. prevent fighting among the witnesses c. prevent witnesses from talking to one another d. protect them from the perpetrator

c. prevent witnesses from talking to one another

a judicial order that authorizes the law enforcement agencies to conduct a search of location/person and to seize any evidence of a criminal offense is called: a. writ of mandus b. jury summons c. search warrant d. subpoena

c. search warrant

all of the following are ways to improve our observational skills except ??? a. be sure to look at the entire area of a crime scene b. observe everything, no matter how big or small c. when collecting evidence, record only those things that you are sure are important d. write down and photograph everything you find

c. when collecting evidence, record only those things that you are sure are important

the rapid combination of oxygen with out substances to produce new substances is:

combustion

the name of the test used to analyze whether a hair sample has been exposed to poisons, toxic chemicals, or drugs is called: a. Toxic Polymorphism Test b. Leupold's Poison Test c. Neoplasm Activation Activity d. Neuron Activation Analysis

d. Neuron Activation analysis

which of the following evidence is considered to be direct evidence? a. a fingerprint left on the doorknob b. a fiber from a suspects couch found on the victims shirt c. blood from a victim found under the fingernails of the suspect d. a confession in a police report

d. a confession in a police report

direct evidence can include all of the following except: a. a toxicology report b. a signed ransom note c. a surveillance video d. a sample of hair

d. a sample of hair

correct collection of evidence requires which of the following? a. documenting the location where the evidence was found b. correct packaging of the evidence c. maintaining proper chain of custody d. all of these are correct

d. all of these are correct

which of the following best describes the difference between circumstantial and direct evidence? a. direct evidence can lead to the conviction of the suspect; however, circumstantial evidence cannot b. direct evidence is not admissible in court; however, circumstantial is admissible with approval of the judge c. direct evidence is used to imply a fact, while circumstantial evidence proves an alleged fact d. direct evidence proved an alleged fact, while circumstantial evidence is used to imply a fact

d. direct evidence proved an alleged fact, while circumstantial evidence is used to imply a fact

which of the following is completed during '" seeing the scene " ? a. evidence is marked b. evidence is collected c. evidence is analyzed d. evidence is photographed

d. evidence is photographed

what part of the hair must be present in order to conduct a full DNA analysis? a. medulla b. cuticle c. cortex d. follicle

d. follicle

a chemical reaction in which heat energy is released is:

exothermic reaction

the ability of a substance to ignite is :

flammability

what fiber is easily broken down by light and concentrated acid?

nylon

the combining of a hydrocarbon and oxygen to produce carbon dioxide and water is:

oxidation

the initial starting location of a fire is:

point of origin

what fiber is found in "polar fleece", wrinkle resistant, not easily broken down by light and concentrated acid?

polyester

the decomposition of organic matter by heat in the absence of oxygen is:

pyrolysis

what fiber is semi-synthetic with a high luster and bright sheen?

rayon

a similar, but uncontaminated sample used for making comparisons is:

substance control