Forensics Ch 15 Casts

What must first be done with impression evidence?

• make a cast using plaster or dental stone
• cut out the area with the impression
• photograph it with a ruler
• place the item that made the impression over it to see if it's a match

A shoe impression is left in paint at a crime scene.  What type of impression is this?

• Patent
• Latent
• Plastic
• Lasting

A tire track is left sunk into the mud.  What type of impression is this?

• Patent
• Latent
• Plastic
• Lasting

A footprint is left in dust at a crime scene and was only found due to electrostatic lifting.  What type of impression is this?

• Patent
• Latent
• Plastic
• Lasting

What type of evidence is impression evidence?

• Class Only
• Individual Only
• Trace Only
• Class or Individual, depending on the characteristics

Which of the following CANNOT be determined from a person's shoe impressions?

• Age
• Body weight
• Surface the person walks on
• Activities of the wearer

What factors CANNOT be determined from a car based on impression evidence?

• Front and rear track width
• Wheelbase measurement
• Turning diameter
• Person driving the car

Current views of bite mark analysis is/are:

• not very reliable because they never have a full bitemark with all teeth
• secondary to DNA from possible saliva in the bitemark
• it's not individual evidence
• all of these