CHAPTER 1 Flashcards
-In PERSIAN LITERATURE, it is discovered during a fight of hero with a dragon.
FIRE
is discovered through spark
FIRE
- A stone that the hero used as weapon missed the monster and struck a rock. Lights show forth and human beings saw fire for the first time.
FIRE
-has played a central role in religion.
FIRE
____ that the hero used as weapon missed the monster and struck this. Lights show forth and human beings saw fire for the first time.
STONE
-It has been used as GOD (for example the INDO – believe on “Iranian Agni”) and recognized as a symbol of home and family (the heart fire) in many cultures.
FIRE
– believe on “Iranian Agni”
INDO
in Rome was an outstanding example of the importance of fire to the Romans.
TEMPLE OF VESTA
- Roman goddess of the earth
VESTA
is a titan and was bestowed with godlike powers when he stole the god’s fire to give it to humanity.
PROMETHEUS
It has been a symbol of purification, immortality, and renewal; hence, the lighting of flames of remembrance and the myths of the
PHOENIX
It has been a symbol of _____,_____,____; hence, the lighting of flames of remembrance and the myths of the PHOENIX
purification, immortality, and renewal
(people who lived by hunting and gathering wild food)
Hunter gatherers
Source of light by taking advantage of the glow of wood-burning fires to continue their activities after dark and inside their dwelling.
FIRE
made use of fire so that they can remain active after the sun set protect themselves from predators, warm themselves, cook and make better tools.
Hunter gatherers
People learned to control this by blowing at it through reed pipes. Then they used this technique to burn hollows in logs to create cradles, bowls, and canoes.
FIRE
Enabled people to make better weapons and tools.
FIRE
EARLY MEANS OF PRODUCING FIRE
- TWO STICKS
- HAND DRILL
- STRIKING FLINT
- MAGNIFYING GLASS
– another ancient method of starting fires to produce sparks.
–mineral stones lang ang pwedeng gamitin dito
STRIKING FLINT
-The rubbing creates friction between the sticks, and the friction generates heat.
-This heat eventually causes the wood to ignite.
TWO STICKS
– one of the oldest methods of starting fires consists of rubbing two sticks together.
TWO STICKS
is a more efficient method of rubbing two pieces of wood together.
HAND DRILL
-Rapidly spinning a stick of wood against another piece of wood can generate enough friction and heat to cause the wood to ignite.
HAND DRILL
-focuses the sunlight on tinder, and the energy of the sunlight heats the tinder until it ignites.
–concave lens ang pwedeng gamitin dito
MAGNIFYING GLASS
increases the temperature of a combustible material from kindling to ignition temperature.
FRICTION METHOD
TWO METHODS OF PRODUCING FIRE
- FRICTION METHOD
- PERCUSSION METHOD
– This method generates a spark to set kindling a fire (generates sparks)
PERCUSSION METHOD
Fire may also be generated by using a _______ to focus and converge the rays of the sun on combustible material.
LENS OR CURVED REFLECTOR
MODERN USES OF FIRE
- Used in appliances that relies on fire to operate.
- Used to supplement main heating system in their homes.
- Used over campfires.
- Used in incinerators to destroy garbage.
- Used to manufacture products and dispose of waste.
- Fire also heat large boilers to generate steam which then powers large turbines.
- Used in power plants to generate electricity.
- Used as a weapon in times of war.
-It is the manifestation of rapid chemical reaction occurring between a combustible matter and an oxidizer.
FIRE
-It refers to the study of the organization and function of fire prevention and suppression techniques; fire behavior, combustible materials, extinguishing agents, hazardous and toxic material; fire protection techniques and systems; and fire command and fire management (supervision).
FIRE TECHNOLOGY
-It is a result of rapid chemical reaction between a fuel, heat, and oxygen on oxidizer
FIRE
-Defined as the heat and light that comes from burning substances, produced by the combustion of substances.
FIRE
BURNING is also called
COMBUSTION.
– the combustion of a fuel.
burning process
is the common term of the burning process – the combustion of a fuel.
FIRE
- is a chemical reaction or process involving combustible materials and an oxidizing agent producing heat or energy.
COMBUSTION
involves rapid oxidation.
COMBUSTION
- the released energy stays in the reaction to continue it.
COMBUSTION
- energy is dissipated as light and heat.
FIRE
- is the chemical reaction producing energy in the form of heat, light and flame.
FIRE
-It is a self-sustaining oxidation process accompanied by the release of heat and light.
FIRE
involves burning to get a substance to react with oxygen.
COMBUSTION
is when a substance reacts with oxygen.
OXIDATION
Rapid oxidation of material is chemically termed as
COMBUSTION
ELEMENTS OF FIRE
- HEAT
- FUEL
- OXIDIZING AGENT/ OXYGEN
– a form of energy generated by the transmission of some other form of energy, as in combustion or burning (ignition temperature)
HEAT
Heat Sources:
OPEN FLAME
ELECTRICAL CIRCUIT
SPARKS
ALL SOURCES OF IGNITION
– combustible matter (organic material, hydrocarbons);
FUEL
-Any substance which reacts chemically with oxygen and flames.
FUEL
– the common oxidizing agent is
OXYGEN.
–a.k.a “REDUCING AGENT”
FUEL
–the material or substance being burned in the combustion process
FUEL
- a colorless, odorless gas and one of the compositions of air which is approximately 21% by volume.
OXYGEN
Oxygen Sources:
a. 21% of normal oxygen
b. 78% of nitrogen
c. 1% of other gases
Oxygen Requirements:
a. 12% - no fire
b. 14% - flashpoint
c. 21% - fire point
is supplied by air, ignition temperature can be provided by the ignition device (like flame), and any combustible material (usually organic matter) burns on being heated by the ignition device.
OXYGEN
A geometrical figure that diagrams the relationship of the three elements of fire.
FIRE TRIANGLE THEORY
- A four-sided representation of causes of fire.
FIRE TETRAHEDRON THEORY (FIRE QUADRANGLE THEORY)
When the temperature of a substance is very high, it releases highly combustible vapors known as
“FREE RADICALS”.
-When a fuel is heated, it gives off vapor which if mixed with the correct amount of air, can be ignited by heat sources
FIRE TETRAHEDRON THEORY
The fourth element that is added in the Fire Quadrangle Theory is the
CHEMICAL REACTION
-The most important part of the triangle
FUEL
is what burns.
FUEL
-It comes in three form as solid, liquid, or gas.
FUEL
FUEL SOURCES
- solid
- liquid
- gas
– molecules are closely packed together
SOLID
– molecules are loosely packed; density (thinner, alcohol)
LIQUID
– molecules are free to move (nitrogen, LPG)
GAS
CLASSIFICATION OF COMBUSTIBLE MATERIALS
- CLASS A FUELS
- CLASS B FUELS
- CLASS C FUELS
- CLASS D FUELS
- CLASS E FUELS
-Ordinary combustible materials that are usually made of organic substances such as wood and wood-based products.
-It includes some of those synthetic and/or inorganic materials like rubber, leather, and plastics.
CLASS A FUELS
-Materials which are in the form of flammable liquids such as alcohol, acidic substances oil and other chemicals such those liquid petroleum products.
Ex: Diesel, petroleum, kerosene, gasoline
CLASS B FUELS
-Normally fire-resistant materials
CLASS C FUELS
-Materials used in electric wiring and other electrical appliances.
CLASS C FUELS
-Combustible metallic substances such as magnesium, titanium, zirconium, sodium, and potassium
CLASS D FUELS
Magnesium – Mg (color niya pag sinunog ay
WHITE
Zirconium COLOR?
BRIGHT RED
SODIUM COLOR
YELLOW
-Combustible gases such as carbon monoxide, carbon dioxide, nitrogen, and oxygen.
CLASS E FUELS
WHAT ARE UNDER THE SOLID FUELS?
1.1 WOOD AND WOOD-BASED PRODUCTS.
1.2 FIBERS AND TEXTILES
1.3 LIQUID FUELS
1.4 GAS FUELS
POTASSIUM
VIOLET OR PURPLE
GENERAL CATEGORIES OF FUELS
SOLID FUELS
– include organic or inorganic, natural or synthetic, and metallic solid materials such as woods, fibers and plastics.
SOLID FUELS
- Factors affecting ignition and burning of woods.
WOOD AND WOOD-BASED PRODUCTS.
– are the second type of solid fuels.
FIBERS AND TEXTILES
Factors affecting ignition and burning of woods.
* PHYSICAL FORM
* MOISTURE CONTENT- WATER CONTENT
* HEAT CONDUCTIVITY
* RATE AND PERIOD OF HEATING
* RATE OF COMBUSTION
* IGNITION OF TEMPERATURE
WOOD AND WOOD-BASED PRODUCTS.
CLASSIFICATION OF FIBERS
NATURAL FIBERS
SYNTHETIC OR ARTIFICIAL FIBERS
WHAT ARE UNDER THE NATURAL FIBERS
- FROM PLANTS
- FROM ANIMALS
- FROM MINERALS
coconut fiber
Coir