Forensics 15

  1. A tire is known as a _______ after tread rubber without any design is applied.
    green tire
  2. The _________ and the _____ features pertain to the actual dimension features of the impression and do not reference the actual show size.
    physical size and shape
  3. _________ impressions are those made on a nongiving surface.
    Two- dimensional
  4. The diameter of the gun barrel is known as the __________.
  5. Class characteristics are used to eliminate shoes at crime scenes, but __________ characteristics are barely used.
  6. A shotgun has a _______ barrel.
  7. All three- dimensional impressions should be cast with ___________.
    dental stone
  8. Determining whether or not an idividual has fired a weapon is done by measuring the elements _______ and ________ on the hands.
    barium and antimony
  9. ________ impressions are those that remain after a shoe has permanently deformed a surface.
  10. A ___________ is any impression caused by a tool coming into contact with another object.
    tool mark
  11. The car industry has erected tire designs that bury the size of the design elements to control noise erosion, this is called __________.
    noise treatment
  12. A halo of vaporous lead escapes around a bullet hole is normally indicature of a discharge, _______ inches.
    12- 18
  13. _________ utilizes a high voltage power source to create a charge that enables transfer of a dry, original impression.
    Electrostatic lift
  14. As a rule of , the spread of the pattern of a 12 gauge shotgun is increased one inch for every _____ of distance.
  15. If an impression will not lift with an electrostatic method, it is either a ____________ impression or is composed of another material loaded to the surface.
    wet origin
  16. The diameter of a shotgun barrel is expressed by the term ______.
  17. Tires that are sold as equipment on a new case are known as __________.
    original equipment
  18. An ______ photograph may help visualize gunpowder deposits around a target.
  19. The _________ gives the manufactuer, the , and year the tire was made.
    DOT number
  20. The _________ of a vehicle is the measurement to the center of the hubs of the front wheel to the center of the hubs to the rear wheels.
  21. Grooves that run across the tread are sometimes called ______, or transverse grooves.
  22. _____________ are tires that have been revitalized with the addition of new layers of rubber.
    Retreaded tires
  23. The _________ is the original past of the oore left after rifting grooves are formed.
  24. The ___________ retread process utilizes strips of raw rubber that are applied to the tire carcass.
    mold case
  25. ____________ are the reletive diagnosis between two or more tires of a vehicle
    Tire tracks
  26. Based on comfirmable differences on class characteristics, shoes may be _________.
  27. The portion of a tire touching the ground is the __________.
    contact patch
  28. The _______ of a vehicle is the diameter of the circle the vehicles makes, when the vehicle is fully turned.
    turning diamter
  29. A _________ is a raised rubber bar that is 1/16 inch off the base of the tire groove.
    wear indicator
  30. Track width is also referred to as the ________ of a vehicle.
  31. Most passenger tires are of ______ construction.
  32. Tire treads are composed of many _________.
    design elements
  33. The _______ retread process utilizes pre molded rubber that already contains the tread design.
    pre- cure
  34. The ________ is the side of the tire that is supposed to face outward on the car with raised white lettering.
  35. The pulltration _______ lists the plat code the location.
    Who makes it and where?
  36. __________ characteristics can stir a person's stride, step length, and step width.
  37. The single most important instrument for comparing bullets is the ____________.
    comparison microscope
  38. Recovered bullets are indicated on the __________.
  39. Based on an agreement on class and individual characteristics a suspects shoe may be _________ as the exact shoe that left impressions at the crime scene.
    postively identified
  40. Restoration of _______ is possible.
    serial number
  41. The most obvious class characteristic of any impression is it's design or ________.
  42. _________ is te measurement mode from the center of one wheel to the opposite wheel.
    Track width
  43. When shoe and tire masks are impressed in the soft earth, their preservation is best preserved by __________ and ___________.
    photography and casting.
  44. Tool marks compare only when a significant number of _______ match between the evidence and significant markings.
  45. _____________ reflect the tread design and the dimensional features on a vehicle.
    tire impressions
  46. It is proper to insert a pencil into the barrel for a crime scene gurnnn
  47. Forensic tire examiners must understand concept of noise treatment
  48. Firings with all types of ammunition can be detected by swabbing with nitric acid
  49. If bullets were fired in succession, all individual characteristics would always be identical.
  50. FBI has a database that contains types of shoes of everyone in the U.S.
  51. Treadwear indicators can be retained in 3-D impressions regardless of the tires.
  52. Current methods of identifying a shooter rely on detection of primary hand.
  53. It is always possible to determine a make of a weapon by the bullet it fires.
  54. Exemplers are examples of represenatives for damaged items to be repaired.
  55. Shotgun pellets can be individualized to a single weapon.
  56. -5 pieces of information gained by shoe impressions

    -3 alternative light sources to see impressions

    -P 195/ 65 R15
    P stands for-
    R stands for-
    15 stands for-
Card Set
Forensics 15