Hair and Fiber Analysis

Front

What is the first and most important step in the examination of fibers?

Back

A microscopic comparison of color and diameter using a comparison microscope.

Front

What happens to synthetic fibers during a burn test?

Back

Synthetic fibers often shrink back away from the flame as they melt.

Tags

NGSS.MS-PS1-4

Front

What observations are used to help identify a specific fiber?

Back

All of the following: smell of the burned fiber, whether the fiber ignites or melts in flame, and color and structure of the residue left after the fiber burns.

Front

What is the term for a medulla pattern that is unbroken?

Back

Continuous.

Front

Are forcibly removed hairs likely to provide useful DNA evidence?

Back

True.

Front

What are the two main categories of fibers?

Back

Natural and synthetic fibers.

Tags

NGSS.MS-PS1-3

Front

What is the primary characteristic of natural fibers?

Back

Natural fibers are derived from plants or animals.

Front

What is a common method for analyzing fibers in forensic science?

Back

Microscopic analysis.

Front

What is the significance of the medulla in hair analysis?

Back

The medulla can help differentiate between species and identify individual hairs.

Front

What type of fiber is made from petroleum products?

Back

Synthetic fiber.

Tags

NGSS.MS-PS1-3