Questions from Crime and Investigation

Q: What is refraction? How does the refractive index of a medium

What is refraction? How does the refractive index of a medium affect what the viewer observes when looking at the medium?

Q: Which is NOT a synthetic fiber? A) Rayon

Which is NOT a synthetic fiber? A) Rayon B) Polyester C) Acrylic D) All of the above are synthetic 22) Which is made of natural polymers? A) Plastic B) Nylon C) Starch D) Paint 23) When coll...

Q: Name and briefly define the three layers of the hair shaft.

Name and briefly define the three layers of the hair shaft.

Q: In comparing hairs, what aspects of the hair is the criminalist

In comparing hairs, what aspects of the hair is the criminalist particularly interested in matching? Name at least one other important feature that the criminalist might compare.

Q: Describe three analytical techniques for comparing the color of two fibers.

Describe three analytical techniques for comparing the color of two fibers.

Q: Name the three phases of hair growth. A criminalist is more

Name the three phases of hair growth. A criminalist is more likely to collect DNA from hairs in which stage of growth? Why?

Q: Why must questioned hairs and standard/reference hairs being compared come

Why must questioned hairs and standard/reference hairs being compared come from the same area of the body?

Q: Describe the process of comparing two fibers via microscopic and analytical methods

Describe the process of comparing two fibers via microscopic and analytical methods. What morphological characteristics should a criminalist compare in these steps?

Q: Name two natural fibers and two manufactured fibers. If all four

Name two natural fibers and two manufactured fibers. If all four of these fibers were found at a crime scene, what would be the proper procedure for their collection and preservation?

Q: What is the difference between a screening test and a confirmation test

What is the difference between a screening test and a confirmation test?