Chapters 2 - 2nd Forensics Test

Most wrongful convictions seem to be the result of:

• Improper evidence collection 
• Faulty eyewitness testimony 
• Contamination of evidence 
• Out of date investigative equipment

It is important to separate witnesses in a crime scene in order to:

• protect them in case the perpetrator is among them
• prevent contamination of evidence
• prevent them from talking and forming a collusion 
• prevent them from leaving the scene

Correct collection of evidence requires which of the following?

• documenting the location where the evidence was found
• correct packaging of evidence
• maintaining proper chain of custody
• all of the above

Locard’s exchange principle implies all of the following except: 

• Fibers can be transferred from one person’s clothing to another
•  Blood from a crime scene can be used to identify blood type
• Hair from your pet may be transferred to your clothing
• Pollen from the plants in your yard may be found on your shoes 

What types of evidence is a drop of blood?

• Circumstantial, Physical and Class
• Circumstantial, Physical and Individual
• Circumstantial, Biological and Individual
• Circumstantial, Biological and Class

What types of evidence is a shoe print?  Assume the print is of a new fully intact shoe.

• Circumstantial, Physical and Class
• Circumstantial, Physical and Individual
• Circumstantial, Biological and Individual
• Circumstantial, Biological and Class

What types of evidence is a written confession given in the presence of police officers?

• Circumstantial, Physical and Class
• Circumstantial, Physical and Individual
• Direct, Physical and Individual
• Direct, Physical and Class

Example of trace evidence are:

• Shoes and clothing
• Video Tape
•  Hair, Fibers and Skin Cells
• Written Confession

What kind of evidence can be used to imply fact but does not directly prove it?

• Circumstantial
• Direct
• Trace
• Individual

Why might a torn t-shirt be considered individual evidence?

• The t-shirt is mass produced.
• The tears can be matched up under a microscope
• The fibers from the torn part match the fibers from the t-shirt.
• The t-shirt was found at the suspect's house.