HOSA Forensic Science Test
Comprehensive Questions
(Frequently Tested) with
Verified Answers Graded A+
Locard's Principle of Exchange - Answer: contact between people and objects during a crime can
result in a transfer of material
direct evidence - Answer: evidence (if true) that proves a fact (eyewitness account)
circumstantial evidence - Answer: evidence that does not directly support a fact (blood stain or
fingerprint)
physical evidence - Answer: an object used to support elements of a crime
biological evidence - Answer: organic matter used to support elements of a crime
class evidence - Answer: evidence that narrows an identity to a group of persons or things
individual evidence - Answer: evidence that narrows identity to a single person or thing
trace evidence - Answer: a small amount of physical or biological evidence
,crime-scene investigation team - Answer: police officers, detectives, crime-scene investigators,
medical examiners, and specialists
crime-scene investigation - Answer: recognize, document, photograph, and collect evidence
first-responding officer - Answer: identify extent of crime scene, secure the scene, and separate
witnesses
primary crime scene - Answer: location of where the crime took place
secondary crime scene - Answer: alternate location where additional evidence can be collected
crime-scene investigator - Answer: processes crime scenes (recognize, document, and preserve
evidence)
triangulation - Answer: mathematical method of calculating the location of an object based on
the position of other objects
paper bindle - Answer: folded paper used to hold evidence
chain of custody - Answer: document that records how and when evidence has been handled
datum point - Answer: a permanent, fixed point of reference used in mapping a crime scene
crime-scene reconstruction - Answer: forming a hypothesis of the sequence of evidence before,
during, and after the crime
, forensic laboratory - Answer: where evidence is analyzed
detective - Answer: develops a possible crime-scene scenario
toxicology - Answer: the study of poisons, toxins, drugs, and other substances people use for
medical, recreational, or criminal purposes
handling substance evidence - Answer: process it, weigh it, separate it, identify it
forensic toxicology - Answer: science of determining relationship between exposure to a
substance and toxic or lethal effects of exposure on humans
poisons - Answer: natural or manufactured chemicals that can cause severe harm
toxins - Answer: naturally occurring poisonous substances living things produce
toxicologist - Answer: examines the effects of harmful substances on the body, establishes cause
and effect of exposure, and develops treatments and techniques for detection
toxicity - Answer: degree to which a substance is harmful to a person at a given time
factors of toxicity - Answer: dose, duration, nature of exposure, interactions, by-products when
broken down or metabolized
questions for toxicological testing - Answer: which substances?
illegal components?
Comprehensive Questions
(Frequently Tested) with
Verified Answers Graded A+
Locard's Principle of Exchange - Answer: contact between people and objects during a crime can
result in a transfer of material
direct evidence - Answer: evidence (if true) that proves a fact (eyewitness account)
circumstantial evidence - Answer: evidence that does not directly support a fact (blood stain or
fingerprint)
physical evidence - Answer: an object used to support elements of a crime
biological evidence - Answer: organic matter used to support elements of a crime
class evidence - Answer: evidence that narrows an identity to a group of persons or things
individual evidence - Answer: evidence that narrows identity to a single person or thing
trace evidence - Answer: a small amount of physical or biological evidence
,crime-scene investigation team - Answer: police officers, detectives, crime-scene investigators,
medical examiners, and specialists
crime-scene investigation - Answer: recognize, document, photograph, and collect evidence
first-responding officer - Answer: identify extent of crime scene, secure the scene, and separate
witnesses
primary crime scene - Answer: location of where the crime took place
secondary crime scene - Answer: alternate location where additional evidence can be collected
crime-scene investigator - Answer: processes crime scenes (recognize, document, and preserve
evidence)
triangulation - Answer: mathematical method of calculating the location of an object based on
the position of other objects
paper bindle - Answer: folded paper used to hold evidence
chain of custody - Answer: document that records how and when evidence has been handled
datum point - Answer: a permanent, fixed point of reference used in mapping a crime scene
crime-scene reconstruction - Answer: forming a hypothesis of the sequence of evidence before,
during, and after the crime
, forensic laboratory - Answer: where evidence is analyzed
detective - Answer: develops a possible crime-scene scenario
toxicology - Answer: the study of poisons, toxins, drugs, and other substances people use for
medical, recreational, or criminal purposes
handling substance evidence - Answer: process it, weigh it, separate it, identify it
forensic toxicology - Answer: science of determining relationship between exposure to a
substance and toxic or lethal effects of exposure on humans
poisons - Answer: natural or manufactured chemicals that can cause severe harm
toxins - Answer: naturally occurring poisonous substances living things produce
toxicologist - Answer: examines the effects of harmful substances on the body, establishes cause
and effect of exposure, and develops treatments and techniques for detection
toxicity - Answer: degree to which a substance is harmful to a person at a given time
factors of toxicity - Answer: dose, duration, nature of exposure, interactions, by-products when
broken down or metabolized
questions for toxicological testing - Answer: which substances?
illegal components?
