Hair & Fiber Review Quiz

What is rayon?

• Rayon is a type of wool fabric.
• Rayon is a type of plastic fabric.
• Rayon is a type of fabric made from cellulose fibers.
• Rayon is a type of synthetic fabric.

Tags

NGSS.MS-PS1-3

What are natural fibers?

• Natural fibers are fibers that are derived from plants, animals, or minerals.
• Natural fibers are fibers that are produced through chemical processes.
• Natural fibers are fibers that are only found in man-made products.
• Natural fibers are fibers that are made from synthetic materials.

What is the difference between the composition of the animal and plant fibers?

• Animal fibers are composed of cellulose, while plant fibers are composed of fats.
• Animal fibers are composed of proteins, while plant fibers are composed of cellulose.
• Animal fibers are composed of cellulose, while plant fibers are composed of minerals.
• Animal fibers are composed of cellulose, while plant fibers are composed of proteins.

What should an evidence log include?

• An evidence log should include the color of the evidence.
• An evidence log should include the weather conditions at the time of collecting the evidence.
• An evidence log should include the favorite food of the person who collected the evidence.
• An evidence log should include details such as the date and time of the evidence, a description of the evidence, the source of the evidence, and the name with signature of the person who collected the evidence.

Tags

NGSS.MS-LS2-4

What should you do before entering a crime scene?

• Touch and move objects at the crime scene without gloves
• Enter the crime scene immediately without taking any precautions
• Allow unauthorized personnel to enter the crime scene
• Secure the area, establish a perimeter, wear PPE, document the scene, and collect evidence following proper protocols.

How should you package trace on a weapon?

• Use duct tape to attach the trace to the weapon.
• Leave the trace loose and unprotected on the weapon.
• Place the trace in a separate bag and carry it separately from the weapon.
• The hairs should be left alone and packaged with the weapon

When provided a picture of a hair, be able to identify the root and tip based on scales.

• Root is the top

  Tip is the bottom

• Root and tip are both the top

• Root and tip are both the bottom

• Root is the bottom

  Tip is the top

What class characteristics of hairs are used by lab techs to either rule out a suspect or determine if further analysis is needed to confirm consistency with crime scene samples?

• Length of hairs
• Color of hairs
• Diameter of hairs

• Shape of the hairs

What is the difference between natural and synthetic fibers?

• Natural fibers are derived from plants or animals, while synthetic fibers are man-made from chemicals.
• Natural fibers are made from plastic, while synthetic fibers are made from natural materials.
• Natural fibers are more durable than synthetic fibers.
• Synthetic fibers are more environmentally friendly than natural fibers.

Tags

NGSS.MS-PS1-3

What characteristic under the microscope would distinguish a textile fiber from animal fiber?

• Melanin in cortex

• regenerated

• Presence of mineral deposits
• heat tolerance