8

Question 1

One of the earliest dangerous crimes ever recognized globally is—-

Answer 1

arson

Question 2

It is described as the deliberate, malevolent destruction of property by means of fire or explosion.

Answer 2

arson

Question 3

– the type of the building may indicate a set fire under certain circumstances. A fire of considerable size at the time the first apparatus arrives at the scene is suspicious if a modern concrete or semi-concrete building is involved.

Answer 3

Burned Building

Question 4

– when two or more separate fires break out within a building. The fire is certainly suspicious.

Answer 4

Separate Fires

Question 5

– some fires burn with little or no smoke but they are exceptions.

The observation of the smoke must be made at the start of the fire since once the fire has assumed a major proportion, the value of the smoke is lost, because the
smoke will not indicate the material used by the arsonist.

Answer 5

Color of Smoke

Question 6

When it appears before the water from the fire hose comes in contact with the fire, it indicates humid material burning. Examples are burning hay, vegetable materials, phosphorus (with garlic odor).

Answer 6

White smoke

Question 7

It causes irritation to the nose and throat, lacrimation, and coughing indicating presence of chlorine.

Answer 7

Biting smoke

Question 8

It indicates lack of air, if accompanied by large flames it indicates petroleum products or rubber, tar, coal, and turpentine.

Answer 8

Black smoke

Question 9

It indicates presence of nitrocellulose, sulfuric acid, hydrogen gas, nitric acid, hydrochloric acid.

Answer 9

Reddish smoke

Question 10

is a good indication of the intensity of the fire, an important factor in determining incendiarism, the act or practice of illegal burning or simply arson.

Answer 10

The color of the flame

Question 11

can also indicate the nature of the combustible substance present.

Answer 11

color of the flame

Question 12

Indicate petroleum

Answer 12

Red flames

Question 13

Indicate alcohol as accelerant

Answer 13

Blue flames

Question 14

indicates heat of 5000 degrees centigrade, a real bright read about 100 degrees centigrade.

Answer 14

reddish glow

Question 15

– An experienced investigator can determine the volume of smoke involved at a fire and the character as residue deposited on walls or elsewhere.

———- have often been of assistance in determining the possibility of a fire having more than one place of origin.

Answer 15

Smoke Marks

Question 16

– This is important when correlated with the type of alarm, the time received and the time of arrival of the first fire apparatus.

Fires make what might be termed a normal progress. Such progress can be estimated after an examination of the material that burned the building and the normal ventilation offered by the fire.

The time element and the degree of headway by the flames become important factors to determine factors to determine possible incendiarism.

Answer 16

Size of Fire

Question 17

– While it is admitted that no two fires burn in identical fashion, yet it can be shown that fire makes normal progress through various types of building materials, combustibility of contents, channel of ventilation and circumstances surrounding the sending of alarm, an experienced investigator can determine whether a fire spread abnormally fast.

Answer 17

Direction of Travel

Question 18

– The degree of heat given off by a fire and the color of its flame often indicate that some accelerant has been added to the material normally present in a building and the investigator must look for further evidence pointing to the use of such accelerants. Difficulty in extinguishing the fire is often a lead to suspect presence of such fluid as gasoline and kerosene.

Answer 18

Intensity

Question 19

– The —— of gasoline, alcohol, kerosene and other inflammable liquids which are often used as accelerants is characteristic and oftentimes arsonists are trapped because of this telltale sign.

Answer 19

Odor

Question 20

– Persons tending to set their house on fire frequently remove objects of value either materially or sentimentally. Store and other business establishments oftentimes remove a major portion of their content or replace valuable merchandise without style articles.

Answer 20

Condition of Content

Question 21

will also affect the burning pattern; but without unusual ventilation, fires burn equally in all directions except down.

Answer 21

Ventilation

Question 22

is usually easier to determine than the point of origin of other accelerants. Unless the investigator has had special training in this type of investigation, it probably would be to his advantage to call in a specialist.

Answer 22

The point of explosion

Question 23

The checking of charred wood giving it the appearance of alligator skin.

The burning of wood produces char in a pattern of cracks which look like the scales on an alligators back.

Answer 23

ALLIGATOR PATTERN

Question 24

It is caused by the fire often can be used to trace the fire to its origin.

Answer 24

ALLIGATOR PATTERN

Question 25

The pattern at the point of origin is smaller and deeper than the rest of the areas. The pattern is also smaller and deeper at points where flammable liquids were used.

Answer 25

ALLIGATOR PATTERN

Question 26

Depth of char is a very important indicator and can be used to show trends of fire travel over a common surface.

Answer 26

ALLIGATOR PATTERN

Question 27

The large blisters indicate rapid intense heat while the small flat blisters indicate long low heat.

Answer 27

ALLIGATOR PATTERN

Question 28

is a very important indicator and can be used to show trends of fire travel over a common surface.

Answer 28

Depth of char

Question 29

indicate rapid intense heat

Answer 29

The large blisters

Question 30

is a criminal act that involves deliberately setting fire to property, often with the intent of causing damage or harm. It is a serious offense that can result in devastating consequences, including loss of life and property. Therefore, it is crucial for authorities to be able to effectively establish and prove that a fire was intentionally set.

Answer 30

Arson

Question 31

which are the effect on materials of heating or partial burning and may be used to determine the point or points of origin of a fire.

Answer 31

burn indicators

Question 32

during a fire is done through a team of arson investigators in the form of surveillance of the fire scene, suspicious behavior of owners, occupants, and other persons present as to their actions, excitements, dresses, and other pertinent information are observed, which might be helpful later.

Answer 32

detection of arson

Question 33

hasten the development of fire and increase the amount of devastation. If either multiple points of origin or traces of fire accelerants are found, arson is indicated.

Answer 33

Fire accelerants

Question 34

was, by far, the most frequently found fire accelerant, possibly because it is readily available.

Answer 34

Gasoline

Question 35

Its characteristic and familiar odor makes it easier to detect than most other flammable liquids.

Answer 35

Gasoline

Question 36

is also used to keep out firemen from the burning structure.

Answer 36

Ammonia

Question 37

have pungent odors similar to camphor.

Answer 37

Films

Question 38

Other accelerants often used are

Answer 38

kerosene and alcohol

Question 39

as a means for the fire to spread more rapidly.

Answer 39

holes on walls and floors

Question 40

may be an indication that flammable liquids or compounds could have been used to spread the fire more rapidly.

Answer 40

Intensity of heat

Question 41

are all-valuables in determining the use of accelerant.

Answer 41

The color of the smoke, location, and size

Question 42

is often used to conceal another crime

Answer 42

Arson

Question 43

are inclined to use substances which will make the blaze certain and at the same time burn up any evidence of their crime.

Answer 43

fire-setters

Question 44

indicate long low heat.

Answer 44

small flat blisters