Overview
T or F
There are databases for shoes and tires for crime scene investigators to use in evidence comparison
True
what type of impression is not visible to the naked eye
latent
This measurement is taken by measuring the middle of the front left tire to the middle of the front right tire
track width
define an abrasion
moving a tool against an object and leaving a mark behind
name the 3 types of shoe prints left behind
plastic
latent
patent
what type of impression is 3d
plastic
This measurement is taken from the middle of the front tires to the middle of the back tires
wheelbase
define cut
tools edge cuts into material leaving striations on the surface
name the 2 types of tire tracks left behind
plastic
patent
what type of impression would a shoe print found in blood be
patent
you can determine a vehicles wheelbase length by looking at the tire tracks of a turn. true or false
false
define indentation
tool pressed against softer surface resulting in a negative impression
what is the first step for investigators when they find an impression at a crime scene
photograph it
what type of evidence are shoeprints
class and individual
there is only 1 set of tire tracks you can use to measure wheelbase, what is it?
3 point turn
what type of evidence are tool marks
class and individual
are impressions direct or circumstantial evidence, and why?
circumstantial - doesn't tie a person directly to the crime scene
what are 3 pieces of information you can get about a suspect based on their shoeprint
height, shoe size, gender, activity, style of shoe, etc.
what types of evidence can you get from tire tracks?what types of evidence can you get from tire treads?
tire tracks - class
tire treads - class and individual
true or false
you press the tool into the crime scene tool mark to see if it's a match
false