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What does the term blue fire mean?
The term blue fire means that the temperature of the the flame is high because it has more energy than other colours such as red or other shades of yellow.
Why water estinguishes fire?
Water extinguishes fire by cooling the burning material below its ignition temperature. It also helps to smother the fire by forming a barrier between the fuel and the oxygen in the air. Additionally, water can absorb heat and evaporate, which helps to remove energy from the fire.
How does the cold water help to put the fire?
Cold water helps to put out a fire by reducing the temperature of the fuel source below its ignition point, thereby extinguishing the flames. It also helps to create steam which displaces oxygen and suffocates the fire.
How things ignite?
Things ignite when a flammable material reaches its ignition temperature, which is the minimum temperature required for a substance to start burning. This causes a chemical reaction that releases heat and light, leading to combustion. The presence of oxygen is also necessary for ignition to occur, as it is a key component in the chemical reaction that produces fire.
What three things must be present to produe a fire?
To produce a fire, you need three elements known as the "fire triangle" - fuel, heat, and oxygen. Fuel can be any combustible material, heat is the energy needed to raise the fuel to its ignition temperature, and oxygen supports the combustion process. Without any of these three elements, a fire cannot be sustained.
What is the difference between the fire point and ignition temperature in terms of their significance in fire safety measures?
The fire point is the temperature at which a substance will continue to burn without the need for an external ignition source, while the ignition temperature is the minimum temperature required to ignite a substance. In terms of fire safety measures, understanding these temperatures helps in determining the potential fire hazards of different materials and implementing appropriate safety protocols to prevent fires.
What is temperature for ignition?
The temperature for ignition refers to the minimum temperature at which a material will catch fire and sustain combustion. This temperature varies depending on the material and its chemical composition.
Why does wood not catch fire when it is heated a little?
Wood needs to reach its ignition temperature to catch fire. When heated only slightly, the temperature may not be high enough to cause ignition. Additionally, a lack of sufficient oxygen or fuel can also prevent wood from catching fire when heated a little.
Why does matchstick does not catch fire at room temperature?
Because of lower ignition temperature of the chemical applied on match stick.
What is another term for glowing temperature?
Minimum ignition temperature of a dust layer of 5 mm thickness
Do all substances catch fire on same temperature. Give reasons?
No, different substances have different ignition temperatures. This is because the ignition temperature is the specific temperature at which a substance will ignite and start burning. Factors such as chemical composition, molecular structure, and presence of impurities determine the ignition temperature of a substance.
What is a flash point?
It is the lowest temperature at which a flammable liquid can receive an ignition source and be ignitable. However, once the ignition source is removed, the flammable nature may cease and the flame stop. At temperatures slightly higher, it is when an ignition source is introduced and the ignition source is removed that the flammable liquid continues to burn regardless of the ignition source. The lowest temperature at which a flammable liquid (e.g. gasoline) becomes capable of catching fire in the air. The correct term applied to non-liquids is the autoignition temperature or kindling point.
How does blowing air put out a fire?
Fire is some kind of fuel burning in oxygen. If you blow gently on a fire more oxygen will get to it and it will burn more fiercely. A fuel will not burn, even in a plentiful supply of oxygen, until it reaches ignition temperature. When a fire is alight, the already burning fuel heats the fuel near to it. When this nearby fuel reaches ignition temperature it too bursts into flame. If you blow air very fast at the fire, the burning fuel is blown away from the fire before it has had time to heat the fuel around it to ignition temperature.
Why petrol does not catch fire on its own temperature?
Petrol has a high ignition temperature, which means it requires a certain amount of heat to ignite. The autoignition temperature of petrol is around 246 degrees Celsius, which is higher than typical ambient temperatures. This is why petrol does not catch fire spontaneously at normal temperatures.
Fire point of diesel?
As low as 126 degrees Fahrenheit, diesel fuel could potentially catch on fire. This is known as the temperature of ignition.
What is the difference between auto ignition and flash point in terms of their significance in fire safety measures?
Auto ignition is the temperature at which a substance will ignite without an external flame or spark, while flash point is the temperature at which a substance will produce enough vapor to ignite when exposed to an ignition source. In terms of fire safety measures, knowing the auto ignition temperature helps determine the risk of spontaneous combustion, while the flash point helps assess the potential for a substance to ignite under specific conditions. Both are important factors in understanding and preventing fire hazards.
How do you make yellow fire?
Fire can be made yellow by using a fuel with a low ignition point. If the flame is kept at a relatively low temperature it will burn yellow.
