Tool Mark Analysis Concepts

The lecture introduces tool marks, explaining their definition, significance, and characteristics. Tool marks are impressions or abrasions left by tools on surfaces, often found at crime scenes. The lecture covers class and individual characteristics, emphasizing that while tools rarely show unique traits, wear and tear can provide some individualization. The process of recreating and analyzing tool marks using comparison microscopes is discussed. The lecture concludes with a preview of the next session, encouraging students to attend a teacher parade.

What is a tool mark?

• A mark left by a shoe

• A type of fingerprint

• A mark left by a tool on a surface

• A type of DNA evidence

Which of the following is NOT a type of tool mark?

• Impression

• Cut

• Fingerprint

• Gouge

Why is it difficult to individualize a tool from a tool mark?

• Tools are rarely used

• Tool marks are always identical

• Tools are mass-produced

• Tools are often brand new

What are class characteristics in tool mark analysis?

• Unique features of a tool

• General features like size and shape

• The color of the tool

• The brand of the tool

What is the significance of striation marks in tool mark analysis?

• They help identify the tool's color

• They provide individualizing characteristics

• They indicate the tool's age

• They are irrelevant in analysis

Why is the surface type important when recreating tool marks?

• It changes the tool's shape

• It affects the tool's color

• It determines the tool's age

• It influences the mark's characteristics

What tool is used to compare tool marks in a lab?

• Spectrometer

• Telescope

• Comparison microscope

• Magnifying glass

What is the main challenge in finding individualizing characteristics in tool marks?

• Tools are always identical

• Tools are rarely used

• Tools are often brand new

• Tools are mass-produced

What is the teacher's personal note about?

• A field trip

• A teacher parade

• Upcoming exams

• A new assignment

What will be discussed in the next lecture?

• Shoe print analysis

• Tool mark lab

• DNA sequencing

• Fingerprint analysis