CSI Impression and Pattern Evidence 2

Question 1

When casting a tire track impression in soft soil, what material is most commonly used?

Accepted Answer

Dental stone

Answer

Plaster of Paris

Answer

Silicone rubber

Answer

Epoxy resin

Question 2

What is the primary purpose of electrostatic lifting in footwear examination?

Accepted Answer

Lifting dry, dusty shoe impressions from hard surfaces

Answer

Recovering latent fingerprints from shoe soles

Answer

Removing shoe impressions from carpet fibers

Answer

Chemically enhancing bloody shoe prints

Question 3

A bite mark on a victim's skin shows individual tooth characteristics. Which characteristic is NOT typically used in bite mark analysis?

Accepted Answer

Dental enamel color

Answer

Tooth size and shape

Answer

Spacing between teeth

Answer

Rotation of individual teeth

Question 4

In tire track analysis, what does 'track width' refer to?

Accepted Answer

The distance between the left and right tires on the same axle

Answer

The width of a single tire tread

Answer

The length of the tire contact patch

Answer

The depth of the tire groove

Question 5

When photographing a shoe impression in soil at a crime scene, what is the correct oblique lighting angle?

Accepted Answer

A low angle of approximately 10-45 degrees

Answer

90 degrees (directly overhead)

Answer

45 degrees

Answer

Any angle is equally effective

Question 6

What is a 'Wheelbase' measurement in tire track evidence?

Accepted Answer

The distance from the front axle to the rear axle

Answer

The circumference of one tire

Answer

The number of grooves in a tread pattern

Answer

The sidewall height of a tire

Question 7

Which type of shoe print would be classified as a 'patent impression'?

Accepted Answer

A visible print left in blood or paint on a hard floor

Answer

A print visible only under UV light

Answer

A print made in soft mud requiring casting

Answer

A latent print revealed by fingerprint powder