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WorksheetsImpressions & Tool Marks Review
Total questions: 23
Worksheet time: 12mins
Which of these is NOT something that may be learned by analyzing footwear impressions?
The possible gender of the culprit
How long ago the crime happened
How many individuals were at a crime scene
That one person was present at two different crime scenes
Which of these is considered INDIVIDUAL evidence?
Stride length of a suspect
Accidental characteristics found in an impression
Brand / type of shoe that made an impression
The sole pattern / design of a footwear impression
Which of these describes the common approach path?
The path that all CSI take in / out / through the scene as they collect evidence
The path that the culprit took when he / she came into the crime scene to commit a crime
The path that the culprit took when he / she left the crime scene
The path that surrounds the outer edge of a crime scene that must be protected from onlookers
Measuring the foot length and stride length of a footwear impression can be used to approximate the ________ of the suspect.
Weight
Age
Height
Walking speed
Which of these statements is FALSE?
When searching for the brand of shoe that left an impression, CSI use databases that store thousands of shoe patterns.
Knowing the brand of shoe that left an impression is not helpful to an investigation because many people may own the same brand.
Knowing the height of the culprit can allow CSI to eliminate possible suspects.
It is nearly impossible for two shoes to have the same accidental characteristics in the same locations.
You find an impression made in sand. This type of footwear impression is considered a...
3D plastic impression
Latent impression
2D visible impression
Mold impression
You find a muddy impression left on a tile floor. This type of footwear impression is considered a...
Latent Impression
2D Visible impression
3D Plastic impression
You believe there may be bloody shoe prints at the scene of a murder, but you cannot see any. You spray a special chemical called Amino Black, which turns a deep blue when it reacts with the proteins in blood. Sure enough, several impressions become visible. This impression is considered...
Latent Impression
2D Visible impression
3D Plastic impression
This type of footwear impression must be collected with casting material.
Latent Impression
2D Visible impression
3D Plastic impression
All three types of impressions can be collected with casting material
Which types of impressions must be photographed?
Latent Impression
2D Visible impression
3D Plastic impression
An electrostatic dust lifter would be used to collect which type of impression?
Latent Impression
2D Visible impression
3D Plastic impression
All three types of impressions can be collected with an electrostatic dust lifter
On which type of impression might CSI use fingerprint powder?
Latent Impression
2D Visible impression
3D Plastic impression
Fingerprint powder may be used in processing all three types of impressions
How many pictures must you take of a 3D footwear impression?
Just one
Two - one with high light source and one with a low light source
Four
Six
The purpose of hardening spray is...
To harden the soil around a footwear impression so that it does not get messed up when pouring a cast
To speed up the hardening process of the casting material after it is poured on an impression
To protect the cast/mold after it is collected, applied before it is washed, so that the water does not remove detail
To protect the cast/mold after it is washed to prevent the cast from chipping/breaking as it is sent to the lab
Which of these locations would you LEAST expect to find tool mark evidence?
on a safe
on a window frame
on a cabinet door
on door hinges
When analysts make a test mark with a tool, what material do they use?
lump of play doh
square of clay
piece of lead
Mikrosil
A tool mark is found on the trunk of a car. What substance is used to collect a cast of the tool mark?
lump of play doh
square of clay
piece of lead
Mikrosil
Which of these is FALSE about striation tool marks?
striation marks can be matched to a specific tool
striation marks are considered class evidence
striations are scratch marks made by a tool scraping across a surface
striation marks can be collected by making a cast of the mark
Which of these is FALSE about compression tool marks?
compression marks can be matched to a specific tool
compression marks are considered class evidence
compression marks are made when a tool is pushed forcefully into a surface
compression marks can be collected by making a cast of the mark
Which of these statements is FALSE?
CSI must dust for fingerprints before making a cast of a tool mark
CSI will document the location of a tool mark by creating a sketch of the area
CSI will document the location of a tool mark by taking an overall photograph of the area
trace evidence in the tool mark is collected as it gets stuck to the cast
When photographs are taken of a tool mark, which of these types of photos are NOT necessary?
an overall photo
an overall photo with a scale
a close up photo
a close up photo with a scale
Which of these is FALSE?
When a tool is used at a crime scene, flecks of paint from the scene may get stuck to the tool
Tools are collected in a ridged container
A tool found at a crime scene should be placed into the tool mark to see if it fits the mark
What type of microscope is used to analyze tool marks?
comparison microscope
compound microscope
dissecting microscope
scanning electron microscope
