Question | Answer |
Primary explosives are? | NOT very stable |
Debris recovered from the site of an explosion is routinely rinsed with _____ in an attempt to recover explosive residues. | acetone |
What is a homemade explosive that has been used by terrorist organization in the Middle East? | TATP |
Which of the following statements is false? | Dynamite is an initiating high explosive. |
Which is NOT a high explosive? | black powder |
An explosive readily detonated by heat or shock is: | primary eplosive |
What is NOT true about taggants? | They are widely used to help trace an explosive to its last legal possessor. |
Spot testing for the presence of explosives can be confrimed in the laboratory using | IR & x-ray defraction |
The most widely used low explosive is | black powder & smokeless poweder |
A procedure commonly used as a test for explosive residues is: | GC/MS,color spot test/thin layer/GC |
A chemical used to synthesize the explosive TATP is? | hydrogen peroxide |
High explosives can be classifed as either ___or___explosives. | Primary;secondary |
The chemical ingredients of black powder are commonly: | potassium nitrate, charcoal, sulfur |
____ explosives detonate almost instantaneously to produce a smasing or shattering effect. | High explosives |
_____ is NOT a military explosive. | nitroglycerin |
Eplosives taht decompose at relatively slow rates are classifed as: | Low explosives |
Telltale signs of arson include: | accelerant,"streamer",separate points orgin, trails of burn patterns |
Combustion occurring at the surface of the solid describes: | glowing combustion |
Factor that contribute to abnormal observation at a fire scene include: | winds&drafts,secondary fires,structure holes,stirways&elevator shafts |
When investigator search a fire scen, the first focus must be on: | finding the origin of the fire |
Which instrmmentation is considered the most sensitive and reliable for detecting and characterizing flammable residues? | GC |
A common classification system charaterizes ignitable liquids based on their boliing point ranges and number of ___ moeclues as light, medium and heavy petroleum distillates. | carbon |
Heat ennergy can ignite distant objects through the transmission of: | Electromagnetic energy |
Complex chromatographic patterns can be simplified by passing the compoinents emerging from the GC column through | mass spectrometer |
The transfer of heat energy by movement of molecules withi a liquid or gas is: | convection |
A fuel can only achieve combustion in: | gaseous state |
The minimum temp at which fuel vapor will ignite is known as: | the ignition temp |
All combustible fules simultaneously igniting to engulf a structure in flames is known as: | flashover |
Gasoline residues are best characterized by: | gas chromatography |
A natural heat-producing process that may give rise to a fire is: | spontaneous combustion |
The decomposition of organic matter by heat describes: | pyrolysis |
Hydrocarbon acelerants can be detected by: | portable dector(sniifer)/traied dogs |
_____ can not be determinded from a lab examination of evidence recovered from an arson. | The brand name of the gasoline used to start the fire. |
The chemical reaction associated with a fire is | oxidation |
The transfer of heat energy by he movement of molecules witin a liquid or gas is: | Convection |
_____is used to analyze the make and model of a printer when it is not physical available. | Class characteristics |
A data bank of ink dye patterns has been maintained by the U.S. Secret Service using: | TLC |
Document examiners frequently uncover the original writing or words that have been crossed out with the aid of: | infrared radiation |
Inks on hadwriteen documents may be copared for their chemical composition by the tech of: | thin-layer chromatogrphy |
The process by which the image is stored inn memory by scanning and converting by computer into array of digital intensity values called picture elements is known as: | digitizing |
Some inks, when expsoed to blue-green light, absorb ___ radiation and emit light. | infrared |
Fax machines print a header known as ___ at the top of each fax page which may become a very importat point of comparison. | TTI |
Which of the following is NOT considered a hardware device? | The opperating sysytem |
which of the following is NOT considered a type of software | Random Access Memory |
What we know as the internet was orginally developed in? | 1969 |
What keeps track of the location of files and folders on the HDD? | the FAT |
One gigabyte can be expressed as: | 1,000 megabytes(MB) |
When is it necessary to make a "fingerprint" of a HDD? | before and after imaging its contents |
Which of the following is not considered to be classified as software? | Floppy dics |
Hard drive partitions are typically divided into? | Cluster, Tracks,Cylinders & Sectors |
The complex of wires located on the motherboard which seres to carry data from one hardware device to another is" | ROM |
One should not look for "latent" data in: | temporary files |
Sectors are typically ___ bytes in size. | 512 |
One should not search for "visible" date in: | unallocated space |
A ____ is an automated search tool used to locate information on the internet. | Search engine |
A quick method for sweitching back and forth between related web pages is to use: | Hyepertext |
A _____ will provide the user with the capabilities for acessing web pages on the world wide web. | brower |
Files containing chat and instant messaging are most likely stored in: | RAM |
which service will allow the user to select informative messages of his or her choice fromt he systems bulletin board-like setup? | Newgroups |
A service offered through the internet that will send messages concerning a specific topic directly to you e-mail acount is? | mailing list |
If an individual wishes to send a message to another individual located in another part of the world he or she would use which sustem? | Electronic mail |
The area of the internet where all the documents of informatoin are collected is called the: | World Wide Web |
When looking at the deceased vitim,investigators should look for | wounds&blood,fingernail scraping&finails |
Which factor would not effect decomposition? | sex of individual |
The stiffening of the body musces after death is called? | rigor mortis |
The term used to describe when blood settles to the bottom side of the body is? | lividity |
Bodies found in air cecompose ____ as fast as those found submerged in water. | twice |
What is studied in forensic playnology? | pollen and spores |
The most reliable bone to determine sex is? | pelvis |
The second best bone for determining sex is? | skull |
Baby teeth are also known as? | deciduous |
Adults that have a full set of teeth contain___teeth in total. | 32 |
Children usually get their first final permanent teeth by about. | 6-8 yrs |
Children usually have their first tooth eruption at what age? | 7 mo |
What part of the bone is responsible for most of the length of the bone | metaphysis |
What bones are used to determine height? | humerus,radius & ulna |
The best bone to determine race is? | skull |
Toward midline | Medial |
Away from midline | Lateral |
Closer to any point of reference on the body | Proximal |
Farther from any point of reference on the body | distal |
How many bones are usually found in an adult human? | 206 |