False, hard
Impressions are easy to find individual characteristics in.
Fingerprints
Which of the following would be most likely to have individual characteristics?
Spokes of a wheel
Radial fractures in a piece of glass look most like which of the following?
False, breaks easily
Plaster of Paris is often used to create casts of impressions today
True
Many soils can be distinguished from other samples by their color and texture.
It turns purple
When the drug heroin comes into contact with the Marquis reagent chemical what happens?
All the above: hair, fibers, and soil
Which of the following is an example of physical evidence.
A group
Class characteristics are those associated with what?
Taking a photograph
What is the first step in recording an impression?
False, very similar
The chemical composition of glass varies widely from manufacturer to manufacturer.
True
If soul is found on the bottom of a shoe, the soil left on the shoe and the entire shoe is taken to the crime lab.
Fingerprints
A ridge characteristic describes a property found where?
They must fit together
For glass fragments to be individualized, what must be true?
24 hours
How long do casts of impressions need before they can be analyzed?
Demonstrative evidence
What is the evidence that is used to help recreate or illustrate a crime?