(As you can guess, different fuels begin burning at different temperatures.) Heat or ignition sources lift fuel (combustible material) to its activation energy to start the fire. The fire generates heat which sustains the chemical reaction; the blaze continues and spreads. Some firefighting tactics shield the fuel from air (oxygen) to extinguish the blaze. Carbon dioxide fire extinguishers expel a cold fog of CO2 that cuts a fire off from its air supply.
History paper #1 Gunpowder also called black powder is considered the earliest explosive invented. The Chinese alchemists of the ninth century were considered to be a major force behind the early development of gunpowder. They first used the substance to treat skin diseases and to kill insects before people realized it would be an advantage to them on the battlefield if used as a weapon. The discover that the substance could be used at battle was found through experimenting. One of the experiments conducted was, attaching bamboo tubes filled with gunpowder, to arrows and launching them with bows.
A device in the exhaust system of a motor vehicle, containing a catalyst for converting pollutant gases into less harmful ones. A catalytic converter is a device that uses a catalyst to convert three harmful compounds in car exhaust into harmless compounds. The three harmful compounds are: * Hydrocarbons (in the form of unburned gasoline) * Carbon monoxide (formed by the combustion of gasoline) * Nitrogen oxides (created when the heat in the engine forces nitrogen in the air to combine with oxygen) Carbon monoxide is a poison for any air-breathing animal. Nitrogen oxides lead to smog and acid rain, and hydrocarbons produce smog. In a catalytic converter, the catalyst (in the form of platinum and palladium) is coated onto a ceramic honeycomb or ceramic beads that are housed in a muffler-like package attached to the exhaust pipe.
At the same time infrared sensors will be detecting heat, like the heat from a vehicles engine. With this combination, the skeets will detonate and shoot “explosively-formed-penetrators,” (EFP’s) towards the target at very high speeds. Once these reach the target, they will destroy it, not by blowing up, but through the kinetic energy of the EFP, because it moves so fast. The XM307 Advanced Crew Served Weapon, (ACSW) is a gun in development. It has a 25mm belt-fed grenade machine gun.
Normally, shell WP is employed for its incendiary effect. The projectile also can be used for screening, spotting, and signaling purposes. (3) M825 white phosphorus. The M825 WP projectile is an FA-delivered 155-mm base-ejection projectile designed to produce a smoke screen on the ground for a duration of 5 to 15 minutes. It consists of two major components--the projectile carrier and the payload.
The steam brings hydrogen sulphide gas to the surface and pollutes the air unless controls are instituted. 2. Water contains many salts and minerals capable of causing water pollution. 3. The earth in a geothermal field may subside as the water is pumped out.
Tammy Thanaporn Amornkasemwong 1st September 2011 Science Period 8 Introduction: How much energy can be released from fuels? Combustion is the process of burning fuel in order to produce heat. The intention of this experiment is to find whether different fuels produce different amount of energy. In the process of combustion in this experiment, cheeto, half a cashew nut, wax candle and ethanol are used as fuels combust with lighter, as heat and oxygen. When the fuels combust, oxygen and fuels react, and heat released.
Finally, the nuclear electromagnetic pulse is made of extremely strong magnetic fields. This pulse disturbs the radio contacts and destroys and electronic devices (“The Atom Bomb – the development of the atomic bomb, the uses of the atomic bomb”). So what all happened to Japan when the first two atomic bombs
Fossil fuels like the substance sulfur dioxide products are burnt to heat water under pressure , making them steam. This high pressure steam is used to spin the turbine generators which make electricity although this method is not really used anymore now. 5.) What are the potential hazards for using this resource? The potential hazards for using sulfur dioxide is it can affect our environment, plants, animals, the air that we breathe, our water resources and our planet.
The main differences between diesel and gasoline are as follows: “a) A diesel Engine takes air into the cylinder and compresses it. Fuel is then injected directly into the cylinder. The heat of the compression lights the fuel spontaneously. A gasoline engine takes in a mixture of gas and air. The fuel and air are mixed outside of the cylinder; once they are both injected they require a spark to ignite.