Why do firefighters use fire to fight fire?
Fire prevents fire In areas where forest fires are common, fire is also used to prevent fires. This happens by doing controlled burns, which removes so much material that the forest fires can not spread.
Why don t firefighters use water right away?
When we put water on the fire, it causes a cooling of that area- if you’ve created steam it HAS to cool the space since given the laws of conservation of mass and energy the heat can’t coexist when its being absorbed by water sufficiently to create the steam.
Why can’t we use ocean water for drinking?
Human kidneys can only make urine that is less salty than salt water. Therefore, to get rid of all the excess salt taken in by drinking seawater, you have to urinate more water than you drank. Eventually, you die of dehydration even as you become thirstier.
Why can’t you use salt water on fires?
Electrical fires: simply because salt water is a good conductor of electricity, so using salt water may increase the risk of electrocution.
Can salt water burn your throat?
The bottom line Make sure water is not too hot, else it will burn your mouth. It should be slightly warm so that you can easily gargle with it. Also, do not add too much salt in the water. Excess of salt will make the tissue of your mouth and throat dry.
Does salt water burn eyes?
When you open your eyes under water or get splashed in the face, it doesn’t sting. The salt concentration is very similar to that of human tears. Most people have experienced the fumes associated with an indoor hotel pool. The chlorine makes your eyes water and your lungs burn.
How can you keep a fire under water?
How would it be possible for fire to exist underwater? – Quora. Simple, it just needs to bring its own oxygen and either burn hot enough to overcome water’s cooling or be somehow insulated from the water. Thermite, once burning, will happily burn under water. So will a bottle rocket.
What makes a magnesium fire worse?
When it burns, magnesium reacts with lots of different chemicals and compounds, and those reactions can also increase the temperature of the magnesium fire. Magnesium also reacts with carbon dioxide, which means if you use a fire extinguisher on a magnesium fire, you’ll only make it worse in the same way as water.
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 CO2 + H2O) + heat energy.
What chemicals can start a fire?
Other reactions that can be used to start fires include:
- calcium hypochlorite and automotive brake fluid.
- potassium permanganate and glycerin.
- potassium permanganate, acetone, and sulfuric acid.
- sodium chlorate, sugar, and sulfuric acid.
- ammonium nitrate powder, finely ground zinc powder, and hydrochloric acid.