Quiz 17: Tool Marks

A tool mark is any impression, scratch, or abrasion made when contact occurs between a tool and an object.

Cutting marks are marks produced along the edge as a surface is cut.

Abrasion marks are made when surfaces slide across one another.

The type of saw blade used to dismember a body can be determined by examining the cut surface of the flesh.

Tools have unique characteristics due to manufacturing processes and use over time.

When tools are found, they are collected and packaged together in containers or boxes and then taken to a laboratory for analysis.

Crime scene tool marks and suspect tools are never fitted together to show a match.This would damage the integrity of the evidence.

Research projects at the Department of Energy's Ames Laboratory in Iowa State University include building a tool mark image database and developing an algorithm to statistically analyze the images.

There is more than one category of tool marks.Tool mark categories include: A)indentation marks. B)abrasion marks. C)cutting marks. D)All of these choices.

Any impression, scratch, or abrasion made when contact occurs between an object, such as a tool, and another object is: A)a tool mark. B)an indentation mark. C)an abrasion mark. D)a cutting mark.

The best way to document tool and tool mark evidence is to use: A)photography. B)radiology. C)a written description. D)casting.

A mark or impression made by a tool when it is pressed against a softer surface is: A)an indentation mark. B)an abrasion mark. C)a cutting mark. D)None of these choices.

All evidence must be correctly labeled and processed.Important information that must be recorded includes: A)who collected the evidence. B)where the evidence was found. C)when the evidence was found and why the evidence was collected. D)All of these choices.

Abrasion marks are made by objects, which include: A)pliers. B)knives. C)axes. D)All of these choices.

In his book entitled Dead Men Do Tell Tales, Dr.William Maples describes a collection of bones belonging to the C.A.Pound Human Identification Lab in Florida.These bones were the bones of: A)human beings. B)pigs. C)cows. D)sheep.

Types of casting materials include: A)Mikrosil casting material. B)AccuTrans auto-mix casting system C)liquid silicone. D)All of these choices.

An important feature of tools used in identification are serial numbers.A serial number is a unique number assigned to an object for: A)identification purposes. B)patent information. C)tool design information. D)None of these choices.

While photographing and recording tool mark evidence, the expert searches the surface of the tool mark for bits of foreign material using: A)digital imaging. B)oblique lighting. C)an electron microscope. D)None of these choices.

If it is possible, tool mark evidence should be collected and preserved for analysis.If this is not possible, _____________________________ is a commonly used method of preserving impressions of tool marks.

The goal of laboratory tool mark analysis is to identify major characteristics that define the type of __________________________ used in a crime.

A research project at the Department of Energy's Ames Laboratory in Iowa State University involves the use of three-dimensional characterization methods and statistical methods to distinguish tool marks.To accomplish their goals, the researchers use a _________________________________, a scanning tool that measures the depth or height of tool marks.

After tool mark comparisons are scientifically analyzed, the expert tool mark witness prepares a ____________________________________________ to present to a jury.

In the Richard Crafts case study, it was theorized that Richard Crafts was facing a financially disastrous divorce and had decided to kill _____________________________________ upon her return from Germany.

​Historically, magnesium ribbon was burned to produce a white, powdery film of magnesium oxide to coat the surface of a tool.This technique was used to: A)​determine if there was blood on the tool. B)​prepare highlights of details for photography. C)​determine whether steel, wood, or iron was transferred during use of the tool. D)​prepare a report regarding the weather conditions to which the tool was exposed.

​Saw marks left on bones vary by the type of saw used.What type of saw leaves teeth-mark patterns of a tiny tick-tac-toe board with thousands of squares? A)​stryker B)​chain saw C)​handsaw D)​hacksaw