Chang Forensics Final part 1 (Intro, QD, Trace)

Front

What are the three layers of hair?

Back

Medulla, Cortex, and Cuticle

Front

What should investigators NOT do when trying to determine if a suspect wrote on a napkin?

Back

Show the woman the napkin and ask her to copy it.

Front

What is indirect evidence that implies a fact but does not prove it directly?

Back

Circumstantial evidence.

Front

What method can be used to chemically compare document ink?

Back

Thin layer chromatography.

Front

Why do forensic scientists wear protective clothing?

Back

To avoid contaminating the crime scene.

Front

What is the function of the medulla in hair structure?

Back

The medulla is the innermost layer of hair, which can provide information about the hair's origin.

Front

What is the role of the cuticle in hair?

Back

The cuticle is the outer layer of hair that protects the inner layers and can provide information about the hair's condition.

Front

What type of evidence is considered direct evidence?

Back

Evidence that directly links a suspect to a crime, such as eyewitness testimony.

Front

What is the significance of using gas chromatography in forensics?

Back

Gas chromatography is used to separate and analyze compounds in a mixture, which can help identify substances.

Front

What is an example of circumstantial evidence?

Back

Finding a suspect's fingerprints at a crime scene.