Fire is
a chemical reaction in which energy in the form of heat is produced
. When forest fuels burn, there is a chemical combination of the oxygen in the air with woody material, pitch and other burnable elements found in the forest environment. This process in known as Combustion.
What is fire explain?
Fire has been used by humans in rituals, in agriculture for clearing land, for cooking, generating heat and light, for signaling, propulsion purposes, smelting, forging, incineration of waste, cremation, and as
a weapon or mode of destruction
.
What is fire Simple?
Fire
is a chemical reaction that gives off light and heat. It is an example of the chemical process.
Fire
is useful, but also very dangerous because it can cause houses, trees and many other things to burn into ashes. Forest
fires
are very harmful. They can destroy a huge area in a matter of minutes.
Why is fire hot short answer?
Fire is hot because
thermal energy (heat) is released when chemical bonds are broken and formed during a combustion reaction
. Combustion turns fuel and oxygen into carbon dioxide and water. … Both light and heat are released as energy. Flames are visible evidence of this energy.
What causes a fire?
Fire is the result of
applying enough heat to a fuel source
, when you’ve got a whole lot of oxygen around. As the atoms in the fuel heat up, they begin to vibrate until they break free of the bonds holding them together and are released as volatile gases. These gases react with oxygen in the surrounding atmosphere.
What are the 4 types of fire?
- Class A Fires. involve common combustibles such as wood, paper, cloth, rubber, trash and plastics.
- Class B Fires. involve flammable liquids, solvents, oil, gasoline, paints, lacquers and other oil-based products.
- Class C Fires. …
- Class D Fires. …
- Class K Fires.
What is fire formula?
As long as there is enough fuel and oxygen, the fire keeps burning.
Fuel + oxygen (from the air) = combustion products (mainly CO
2
+ H
2
O) + heat energy
.
Who made fire?
Claims for the earliest definitive evidence of control of fire by a member of Homo range from 1.7 to 2.0 million years ago (Mya). Evidence for the “microscopic traces of wood ash” as controlled use of fire by
Homo erectus
, beginning some 1,000,000 years ago, has wide scholarly support.
How fire can start?
Heat is necessary to
begin the combustion process. Once started, fire produces its own heat. Wild land fires originate from such sources of heat as matches, embers from cigarettes, cigars or pipes, campfires, trash fires, exhaust sparks from railroad locomotives, sparks from brake shoes or hot-box on railroad cars.
How many types of fire are there?
There are actually
five main types
of fires.
Fires can be classified in five different ways depending on the agent that fuels them: Class A, Class B, Class C, Class D, and Class K. Each type of fire involves different flammable materials and requires a special approach.
What’s the hottest fire?
The hottest fires are from oxyacetylene torches (
about 3000 degrees Centigrade
) that combine oxygen and gas to create pinpoint blue flames. Color also tells us about the temperature of a candle flame. The inner core of the candle flame is light blue, with a temperature of around 1800 K (1500 °C).
How hot is violet fire?
Blue-violet (purple) flames are one of the hottest visible parts of fire at
more than 1400°C (2552°F)
.
Why fire has no shadow?
The main reason why the flame has no shadow is
because the flame itself is a source of light
. A shadow is the surface area which is less bright than its surroundings because something is blocking light partially or fully from that area. Therefore, a shadow is nothing but a darker area with the absence of light.
What are 5 causes of fire?
- Cooking. Cooking fires are the leading cause of home fires by far, accounting for 48% of all reported residential fires. …
- Heating. Portable heaters are the second-leading cause of home fires and home fire injuries. …
- Electrical Fires. …
- Smoking. …
- Candles. …
- Fire Safety Should Be a Top Priority.
What are the 3 main causes of fire?
- Cooking equipment. Pots and pans can overheat and cause a fire very easily if the person cooking gets distracted and leaves cooking unattended. …
- Heating. …
- Smoking in bedrooms. …
- Electrical equipment. …
- Candles. …
- Curious children. …
- Faulty wiring. …
- Barbeques.
What are the 10 causes of fire?
- Heating Systems. We often forget about our home heating system, but they do need periodic maintenance checks to ensure they remain safe. …
- Smoking. …
- Electrical Appliances. …
- Candles. …
- Children & Fire. …
- Old, inadequate wiring. …
- Flammable Liquids. …
- Christmas tree decorations.
