Study guide-Shoe and tire impressions

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

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

Shoe and tire marks impressed into soft earth can be best preserved by: 

• photographing and casting with dental stone
• photographing and then use of the electrostatic lifting technique.
• It is not possible to accurately preserve such markings
• dusting with powder

True or False: Impressions can be both class and individual evidence?

• True

• False

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 are yaw marks and how are they formed?

• made when a vehicle drives on mud, sand, or snow.
• occur when a car travels over a liquid such as paint, blood, or tar.
• Sideways skid marks, produced when a vehicle turns faster than it can handle

The measure of distance from the center of the left tire to the center of the corresponding right tire is called....

• Tire Groove

• Turning Diameter

• Wheelbase

• Track Width