- What is fire behavior?
- What are the 3 stages of a fire?
- What is a Class C fire?
- Does fire have DNA?
- How quickly does a fire grow?
- What is chemistry of fire?
- What are the 4 components of a fire?
- What is dangerous fire behavior?
- What are the 5 stages of fire?
- What is tetrahedron of fire?
- What is the most common cause of death in a fire?
- How can we sustain fire?
What is fire behavior?
Fire behaviour refers to the manner in which fuel ignites, flame develops and fire spreads.
In wildland fires, this behaviour is influenced by how fuels (such as needles, leaves and twigs), weather and topography interact.
Once a fire starts, it will continue burning only if heat, oxygen and more fuel are present..
What are the 3 stages of a fire?
Stages of fireIgnition: Fuel, oxygen and heat join together in a sustained chemical reaction. … Growth: With the initial flame as a heat source, additional fuel ignites. … Fully developed: Fire has spread over much if not all the available fuel; temperatures reach their peak, resulting in heat damage.More items…
What is a Class C fire?
A class C fire is one in which an energized electrical element is the cause of the fire. “Energized” means that the electrical component (whether electrical appliance, wiring, device, etc.) is connected to a power source. … If an extinguisher has a Class C rating, it means that the agent will not conduct electricity.
Does fire have DNA?
Fire does not contain cells. — Living things contain DNA and/or RNA, proteins which contain the basic information cells use to reproduce themselves. Fire does not contain DNA or RNA. … Fire is energy given off when matter burns.
How quickly does a fire grow?
A fire can double in size every 30 seconds causing everything in a room to burn in as little as three minutes. After you have taken two minutes to escape and call 9-1-1 a metropolitan fire department will probably take only five minutes to arrive.
What is chemistry of fire?
Fire is the rapid oxidation of a material in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. … The flame is the visible portion of the fire. Flames consist primarily of carbon dioxide, water vapor, oxygen and nitrogen.
What are the 4 components of a fire?
Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
What is dangerous fire behavior?
A low concentration of oxygen will slow the burning right down. An example of dangerous fire behaviour that can occur in a situation where there is a low concentration of oxygen is called backdraught. This is when an enclosed fire has used up most of the oxygen and is just smouldering.
What are the 5 stages of fire?
These stages are incipient, growth, fully developed, and decay. The following is a brief overview of each stage.
What is tetrahedron of fire?
A tetrahedron can be described as a pyramid which is a solid having four plane faces. Essentially all four elements must be present for fire to occur, fuel, heat, oxygen, and a chemical chain reaction. … Each of the four sides of the fire tetrahedron symbolise the Fuel, Heat, Oxygen and Chemical Chain Reaction.
What is the most common cause of death in a fire?
smoke inhalationThe majority of fire-related deaths are caused by smoke inhalation of the toxic gases produced by fires. Actual flames and burns only account for about 30 percent of fire-related deaths and injuries.
How can we sustain fire?
Put some paper product (such as newspaper) in the middle of your fire, on top of the grate before placing your wood.Stack the new firewood with a lot of space between the logs to get proper ventilation.Frequently add more tinder and kindling to the open spaces between your logs.Blow on you fire.More items…