Final questions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Paint as physical evidence is most frequently encountered in | burglary and hit and run
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which property imparts paint with its most distinctive forensic characteristics | color-layer sequence
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what is the main ingredient in ordinary glass | sand
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Tempered glass is used in | the side and rear windows of autos manufactured in the United States
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Flotation is a method used by scientists to determine the ____ of a particle of glass | density
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which is a true statement about the fracturing of glass? | radial cracks appear first, starting on the side opposite the destructive force.
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The fracture pattern of glass usually has | radial and concentric lines
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what is the logical first step in soil analysis | comparison of dried soil sample for color and texture
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automobile finishes typically contain which layers | an electrocoat primer, colorcoat, and clearcoat
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Pyrex glass | is made with the addition of boron oxide
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if an object is immersed in a liquid of greater density, it will | float
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the process of a glass prism separating sunlight into component colors is called | dispersion
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the refractive index of a substance varies woth | temperature, color of light passing through, wavelength of light passing through
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a(n)____property describes the behavior of a substance without reference to any other substance while a(n)___ property describes the behavior of a substance when it reacts or combines with another substance | Physical;Chemical
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the basic metric unit for volume is the | liter
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color and texture comparisons cannot be made on samples until they are all __ with identical laboratory procedures | dried
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naturally occurring crystals commonly found in soils are | minerals
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the fracture lines radiating outward from a crack in glass are known as ___ fractures | radial
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Glass fracture lines that encircle the hole in the glass are known as __ fractures | concentric
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The examinatio of a paint chip found on a hit and run victim's garment side by side with paint removed from a vehicle suspected of being involved in the incident is an example of | comparison
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when a forensic analyst determines the chemical composition of preparations that may contain illicit drugs such as heroin, cocaine, or barbiturates, this is an example of | identification
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evidence with individual characteristics can lead to a determination of common origin (single source). Which type of evidence cannot yield such results | single layer paints
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the corroborative use of physical evidence means that it can be used to | provide a lead to give the investigation direction
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forensics databases are maintained for all of the following except: | dental impressions
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the combined DNA Index System (CODIS) became fully operational in what year? | 1998
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A component of the National Integrated Ballistics Information Network is Called | IBIS
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The process by which the body temperature cools after death is known as | algor mortis
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A forensic anthropologist may help to create a(n) ___ to help with the identification of the victim | facial reconstruction
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A corps was discovered in an apartment last November. it was that of a 50 year old male who died of a heart attack. at the time of discovery, the body temperature was determined to be 89F. what is the most probable post mortem interval | 7 hours
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The computerized database used to store DNA information is | CODIS
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if the laboratory can piece broken glass from a window or headlight together, then the evidence has ___ characteristics | individual
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the likelihood of finding class physical evidence is ___ the likelihood of finding physical evidence with individual characteristics | greater than
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if an object is immersed in a liquid of greater density, it will | float
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The refractive index of a substance varies with | temperature, color of light passing through, wavelength of light passing
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What types of evidence would be expected to have trace elements | soil and gun primer particles, glass and metal objects, plant and bullet fragments
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A compound microscope is equipped with two objectives lenses (10x and 45x) and has a 10x ocular lens. The highest magnification attainable with this instrument is | 450x
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The number and type of tests needed to identify a substance must be sufficient to __all other substances from consideration | exclude
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evidence associated with a group and not to a single sources is said to posses ___ characteristics | class
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modern analytical techniques have become so sensitive that the forensics expert must be aware of the __ among materials when interpreting the significance of comparative data. | natural variates<<<(can't read his writing)
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