Trace Evidence Exam Review

T/F: Electrostatic lifting is an abrasive technique that will not allow for other techniques to be used afterwards.

False

T/F: A casting using dental stone cannot be cleaned until it is fully hardened.

True

T/F: When a crime scene impression corresponds in both design and physical size of that design with the suspect's shoe, the association has a high evidentiary value.

True

T/F: SoleMate® is not an example of a commercial database of shoeprints.

True

T/F: Essentially Locard's principle is why shoes leave shoeprints that can be recovered at a crime scene.

True

What are three dimensional impression typically casted with?

Dental Stone

What must dental stone be mixed with in order to create a cast?

Water

What is normally the first area to be compared with impressions?

Design

Sometimes a ______ is used to help visual impressions for digital imaging.

Developing Reagent

What kind of lighting can be used to search for impressions that could not otherwise be easily seen?

Oblique Lighting

T/F: GRIM is an automated method for determining the match point of a glass chip.

True

What component of soil can be a strong indicator of a location?

Pollen

T/F: A stereo binocular microscope forms two views to create a 3D image?

True

What is the single direction in which light vibrating is absorbed referred to as?

Priviledged Direction

What is the term for the halo or brightness that enters into the material of greater RI?

Becke Line

T/F: A microscope with an objective with 10 times magnification and an eyepiece with 15 times magnification has a total magnification of 1500.

False

Which microscope is generally employed first in the examination of trace evidence?

Stereo Binocular Microscope

T/F: A comparison microscope is in reality two microscopes linked by an optical bridge.

True

If a microscopist measures birefringence and retardation what third property can be determined using the Michel-Levy chart?

Thickness

T/F: Neuromuscular coordination and visual perception differ from individuals creating deviations in copybook styles of penmanship.

True

T/F: Writing is a habitual acquired skill.

True

T/F: An examiner is not capable of using an ESDA recovered indented sample for comparison even if it has high quality.

False

T/F: A video spectral comparator is routinely used to detect passport and visa forgeries.

True

Using this technique, an indented writing sample can be visualized and photographed.

Oblique Lighting

What can be analyzed as a questioned document?

Handwriting, Signature, Mark or any Handwritten/Typewritten document

What are the marks left on photocopies caused from dirt, scratches, etc left on the surface of the drum, cover, glass plate, or camera lens of a photocopy machine?

Trash Marks

What is the analysis technique used for inks in which a portion of the suspect ink is separated from the paper using a solvent and is separated into bands of color as they migrate up the plate?

Thin Layer Chromatography

What type of forgery is where an individual does not attempt to copy the victim's signature or writing?

Normal Hand Forgery

What will a tracing reveal poorly?

Line Quality

T/F: When a vehicle is at a complete stop in a normal way, the kinetic energy is zero.

True

T/F: Forensic engineering involves the study of mechanical and material failure only.

False

T/F: The aircrafts to hit the World Trade Center on September 11, 2001 were Boeing 707s.

False

T/F: The totally energy at the end of the process includes any irreversible work done during the accident event.

True

When chemical energy is converted to kinetic energy in a bullet, some of the energy is lost in what?

Potential Energy

An example of irreversible work during an automobile accident is which of the following?

Skidding

All but which one of these is a reason the rate of vehicular fatalities have increased on the road?

Multiple Choice: Most Obvious Answer

Other buildings that have caused defensive measures to be incorporated into the structures of buildings have included:

U.S. Embassy in Lebanon, Murrah Federal Building-Oklahoma City

Energy is conserved, but may be converted into many different types including:

Heat, Friction, Kinetic Energy

The second law of thermodynamics states that:

Heat cannot move from a resivoir of lower temperature to a resivoir of higher temperature in a cyclic process.

T/F: The instructor for this class has said, "If you didn't document it, you didn't do it".

True