Good question.
Yes, it is true that fire grows and uses oxygen, but life is defined by more than just those two factors. In order for something to be truly alive, there are other factors that must be embodied, such asthe reproduction, functional activity, and continual change preceding death.
Think of this in instinctual terms. When one thinks of something as being alive, it is usually a given that the thing grows and develops the way a human or a plant does; that it takes in food (of some sort) and water in order to stimulate this growth. Fire does not do this; it "grows", yes, but not in the way of change. Fire retains the same properties and the same components throughout its "life". In terms of reproduction, fire spreads but does not create a new being from itself. Reproduction ties in with evolution; fire doesn't evolve. It is created and then destroyed, but it never changes, never varies. It is perpetually constant.
Another factor is internal life. Humans and plants and animals think and feel in their own ways. Humans have brains and emotions to tell them right from wrong, to help them develop. Plants, scientists have discovered, have some sort of thinking process that urges them to grow towards sunlight and suck nutrients from soil in order to grow. Animals are similar to humans in that they have brains that inform them of how to grow and survive. Fire has no internal spark (pardon the pun). There is nothing within fire that helps it to think for itself or defend itself from danger. Fire is an object under the command of whomever has the ability to create and destroy it.
fire is considered alive because it needs oxygen to burn. flowers are alive because it needs heat for energy to create more cells, CO2 because they need it to produce necessary sugars. and it grows... of course
Even though fire grows and uses oxygen, it is not considered a life form because it is missing some key elements. Fire has neither DNA or RNA, and it doesn't contain any cells. Fire also lacks metabolism and the ability to reproduce.
Fire grows when oxygen (air) gets blown onto it.
Fire can be alive because it moves, grows, reproduces and breathes. Also fire doesn't need organs to be alive because plants and bacteria are alive.
A fire grows when fed and dies when watered.
When fire ignites near combustible materials, it grows by consuming the available fuel and oxygen in its environment. As the flames spread, they release heat, which preheats nearby combustibles and helps the fire to grow. If the fire is not controlled, it can continue to spread, causing more damage and consuming more resources.
No. Oxygen itself is not flammable, but it is necessary for fire. Fire is a chemical reaction between oxygen and a flammable substance. Fire is possible on Earth because ordinary air is 21% oxygen. Pure oxygen is considered a fire hazard because higher concentrations of oxygen will make it easier for a fire to ignite and will allow it to burn hotter and faster than normal.
No, a spaceship cannot catch fire in space because fire requires oxygen to burn, and there is no oxygen in the vacuum of space. However, onboard systems and equipment such as electrical systems can still short circuit or overheat and cause fires, but these fires would not behave the same way as fires on Earth due to the lack of oxygen.
Fire is a very simple term. Contrary to what people tell you, although it is NOT a living thing, it does grow and develop. Fire needs three things to burn: Fuel (like wood, paper, oil, etc), Heat, and Oxygen. Take away one of those things and the fire will be put out. But if you add those things or the level remains the same, the fire may grow larger and hotter, and it will be harder to put out. As the fire develops (there are three stages to a fire burning but we don't need to get in to those), more and more fuel and oxygen will be taken until there is nothing left.
fire
In order for a fire to occur, the oxygen concentration needs to be at least 16%. The ideal range for combustion is between 16% and 21% oxygen in the air. Below 16%, the environment is considered oxygen-deficient, making it difficult for fires to ignite or sustain combustion.
fire grows with wind