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PLTW 2025 | 125 Complete Questions and Answers 100% Correct
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PLTW 2025 | 125 Complete Questions and Answers100% Correct
Forensic Scientist - ANSWER a broad term covering crime scene investigators
who collect evidence from the scenes of crimes and technicians who work mostly
in a laboratory setting.
Decedent - ANSWER a person who has died.
Link - ANSWER Method seeking to find associations between evidence.
Investigators evaluate the scene and then proceed through the area in a
systematic and logical fashion. Based on the notion that one type of evidence
leads to another. Works with large and small, indoor and outdoor crime scenes.
Line (Strip) Method - ANSWER Used on large, outdoor crime scenes. Members
of the search team are arranged at regular intervals, usually arm's length, and
then proceed to search along straight lines.
Grid Method - ANSWER Used on large, outdoor crime scenes. Searchers follow
the first line pattern and search in the same manner as the line method. Once the
first line pattern is complete, searchers realign on the other line pattern.
Zone Method - ANSWER Used on crime scenes that are made of readily
definable zones, such as in houses or buildings. Teams are assigned small zones for
searching, and then other appropriate searching methods are employed in each
zone.
,Spiral Method (Inward or Outward) - ANSWER Used on crime scenes with no
physical barriers, such as open water. Can either begin at a critical point of crime
scene (outward spiral) or the outer-edge of the crime scene (inward spiral).
Wheel or Ray Method - ANSWER Used on small, circular crime scenes.
Investigators start from a critical point and travel outward along many straight
lines from this point.
Physiological Responses include: heart rate, blood pressure, _______________ &
____________ - ANSWER Skin Conductivity & Perspiration
What is the connection between the heart & lungs? - ANSWER Your respiratory
system works with the cardiovascular system to take in oxygen, deliver it to cells
throughout the body, and remove carbon dioxide waste.
Baseline serves as the __________ in an experiment. - ANSWER Control Group
What kind of questions to ask on a polygraph; simple yes/ no or multilayer
questions? Why? - ANSWER Simple yes and no questions because it would be
too complicated if it would be multilayer questions.
Know how to pinpoint a lie using _________ & _____________ - ANSWER
Heart Rate & Respiratory Rate
Independent variable - ANSWER a variable (often denoted by x ) whose
variation does not depend on that of another.
, Dependent variable - ANSWER a variable (often denoted by y ) whose value
depends on that of another.
Trace Evidence - ANSWER Tiny fragments of physical evidence, such as hairs,
fibers from clothing or carpeting, and pieces of glass.
Locard's Exchange Principle - ANSWER Hypothesizes that it is impossible for a
criminal to act without leaving traces.
The three parts of the hair - ANSWER Cortex, Cuticle, Medulla
Know where DNA would be found in hair - ANSWER Medulla
Fingerprints: Ridges (arches, loops, and _____) - ANSWER Whorls
Majority of people have which type of fingerprint? - ANSWER Loop
Minutiae - ANSWER Tiny fingerprint ridge details
How many Minutiae do you have to match to positively identify a person? -
ANSWER at least twelve to fifteen points
Digital Evidence - ANSWER Focuses on evidence found on devices that store
data, such as computers, smartphones, or tablets.
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