Arson 1st quiz prelims

58問 • 1年前

問題一覧

The manner which the fuel ignites, flame develops, and fire spreads distinguish characteristics of one particular fire from typical fire characteristics

FIRE BEHAVIOR

is a chemical process caused by the combination of one or more substances with oxygen In order to start this chemical process, normally an initial source of heat is required.

COMBUSTION

Is a rapid fire self sustaining oxidation process release of heat and light

FIRE

Is the three elements to create produce fire equal in proportion

FIRE TRIANGLE THEORY

Known as the chemical chain reaction

FIRE TETRAHEDRON THEORY

Stages or steps wherein fir e is created

LIFE CYCLE OF FIRE THEORY

any substance/combustibles that reacts chemically with oxygen and produces flames. For a fire to start there must be something to burn

FUEL

a form of energy measured in degree of temperature the product of combustion that caused the spread of fire. For a fire to start there must be a source of ignition, usually heat or a spark. Heat sources include: open flame, hot surfaces, sparks and arcs, friction- chemical action, electrical energy and compression of gases

HEAT

The most common source of heat in combustion reactions.

CHEMICAL ENERGY

An energy developed when electrons flow through a conductor.

ELECTRICAL ENERGY

An energy generated when atoms either split apart (fission) or combine (fussion)

NUCLEAR ENERGY

An energy created by friction and compression.

MECHANICAL ENERGY

This movement produced sparks being generated.

HEAT OF FRICTION

heat is generated when a gas is compressed in a container or cylinder

HEAT OF COMPRESSION

an energy possessed by an object that can be released in the future

POTENTIAL ENERGY

an energy possessed by a moving object.

KINETIC ENERGY

An energy that is transferred between two objects of differing temperature such as sun and the earth

HEAT

A visible radiation created at the atomic level such as flame produced during combustion.

LIGHT

colorless and odorless gas and one of the compositions of air that supports fire

OXYGEN

The fire triangle theory describes the three elements of a fire combustion uses a four sided figure called

FIRE TETRAHEDRON

material/substance that yields or provides oxygen or oxidizing gases needed during a chemical reaction

OXIDIZING AGENT

material or substance being burned in the combustion process. The fuel in a combustion reaction is known as

REDUCING AGENT

Heat generated in the oxidizing reaction increases molecular activity.

TEMPERATURE

This process is necessary for continuous combustion. The continuous collisions of molecules in the reducing and oxidizing agents create thermal energy which sustains the combustion process.

SELF SUSTAINED CHEMICAL REACTION

The growth phase called

INCIPIENT STAGE

The fully developed stage

FREE BURNING STAGE

Material involved in the fire and the decay phase

SMOULDERING PHASE

Smoke and gases that are generated by the combustion are confined fires that start in a confined building, go through an additional phase called?

FLASHOVER

Fire simply means the speard of fire

Propagation of fire

The initial source to other fuels in and beyond the area of fire origin

TRANSMISSION OF HEAT

its direct contact with heated object

CONDUCTION

Occurs when the fire heats the air near

CONVECTION

A transfer heat of through light heat waves

RADIATION

Fire spreads along trough a burning material by flame contact

DIRECT FLAME CONTACT

Specifies that tends to flow from a hot substance to cold substance

LAW OF HEAT FLOW

Fuel is removed or burned away

STARVATION

Its is lowered to a point where burning will stop

OXYGEN DILLUTION

Heat is decreased to the point where molecular activity can no longer sustain a fire

COOLING

Unhibited chain reactions are interrupted

CHAIN BREAKING

A causes solid and liquid fuels and the.production of ignitable vapours or gases

PYROLYSIS OR VAPORIZATION

Temprature thats required to start or cause combustion

IGNITION TEMPERATURE

Vapours are tecnically termed as ?

FREE RADICALS

Deep red flames

600-800 *

Orange yellow

1100*c

White flame

1300-1500*c

Blue flames

1400-1650*c

It is thermal decomposition of solid fuel through the action of heat called?

PYROLYSIS

The lowest temperature which product produce sufficient flammable vapour to sustained combustion

FIRE POINT

These components remain when other products of combustion cool to normal temperature

FIRE GASES

A fire gas formed during involving organic material

HYDROGEN SULFIDE

A toxic gas found in oxygen starve fires

HYDROGEN CYANIDE

A gas which can be fatal after only a few breaths

HYDROGEN CHLORIDE

The luminous body burning gas which gets hotter and less luminous when mixed with mote oxygen

FLAME

A reddish in color, its a product of complete combustion

LUMINOUS FLAME

Bluish in color, a product of incomplete combustion

NON LUMINOUS FLAME

A smooth path through a gaseous flame

LAMINAR FLAME

Its a rough flame, unsteady, irregular swirls

TURBULENT FLAME

A visible product of incomplete combustion a mixture oxygen, particles released from the burning material

SMOKE

agencies involved

AGANON JUSTINE C. · 12問 · 2年前

agencies involved