Which of the following is the correct combination to cause fire?

The fire tetrahedron represents the addition of a component in the chemical • • • When the fire involves burning metals like In the same way, as soon as one of the four elements of the tetrahedron is (entirely) removed, combustion stops. Oxidizer [ ] The oxidizer is the other reactant of the chemical reaction. In most cases, it is the ambient air, and in particular one of its components, oxygen (O 2). By depriving a fire of air the fire can be extinguished, such as when covering the flame of a small candle with an empty glass. To the contrary, if air is blown over a wood fire (as with Some chemicals, such as fluorine gas, In certain cases such as some explosives, the oxidizer and combustible are the same (e.g., nitroglycerin, an unstable molecule that has oxidizing parts in the same molecule as the oxidizeable parts). Reaction is initiated by an activating energy — in most cases, it is heat. Several examples include friction, as in the case of matches, heating an electrical wire, a flame (propagation of fire), or a spark (from a lighter or from any starting electrical device). There are also many other ways to bring sufficient activation energy including electricity, radiation, and pressure, all of which will lead to a temperature rise. In most cases, heat production enables self-sustainability of the reaction, and enables a chain reaction to grow. The temperature at which a liquid produces sufficient vapor to get a flammable mix with self-sustainable combustion is called ...

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer See Answer See Answer done loading Question:Answer the following questions and select the correct statement: Which of the following is combinations make up the fire triangle Wood, fuel, candle Ignition, oxygen, fuel Fuel, Helium, spark Ignition, Spark, Combustion As the frequency of earthquakes increases, the risk location/risk response chart moves from low risk to higher risks. Answer the following questions and select the correct statement: Which of the following is combinations make up the fire triangle • Wood, fuel, candle • Ignition, oxygen, fuel • Fuel, Helium, spark • Ignition, Spark, Combustion As the frequency of earthquakes increases, the risk location/risk response chart moves from low risk to higher risks. • True • False Which of the following is not an occupational health and safety risk • Posture risk • Financial collapse • Radiation risk • Visual risk • Respiratory Risk Posture risk only leads to back pain and does not cause any long term injury to the body • True • False A risk evaluation is a combined effort to identify and analyze potential hazards to a process and make judgment on how to effectively mitigate impacts • True • False Asbestos poisoning affects only • Old people above 50 years old • Children in daycare • Workers in construction sites • All individuals exposed to the asbestos fiber What is the proper clothin...

Three elements are required in combination to ignite a fire and keep it burning – most common sources of ignition in the workplace. What is an Ignition Source? An ignition source is a thing or occurrence that has the potential to produce enough heat energy to ignite a flammable material or substance. Though many workplace items, materials and substances have the potential to catch fire, some industries are more abundant than others: industries which rely on processing flammable gases, liquids, materials and metals are far more likely to create a flammable environment than an office building or pet shop, for example. Some workplaces have easily identifiable ignition sources – such as a furnace or soldering iron, however, other sources may not be so obvious, placing extra importance on the need to conduct thorough Four Most Common Types of Ignition Sources in the Workplace Within the workplace, there are four common types of ignition sources to look out for: • Chemical • Electrical • Mechanical • Thermal We will explain them in more detail below. Chemical Sources of Ignition Although the fire triangle is the typical reaction required to cause a fire, you must also be aware of chemical ignitions, which are caused by exothermic reactions, such as exothermic polymerisation or a reaction between sodium metals and air. Electrical Sources of Ignition Even though electrical ignition sources are some of the most commonly considered sources of ignition, they are, perhaps, the most mi...

Classes of Fires There are four classes of fires: Class A: Ordinary solid combustibles such as paper, wood, cloth and some plastics. Class B: Flammable liquids such as alcohol, ether, oil, gasoline and grease, which are best extinguished by smothering. Class C: Electrical equipment, appliances and wiring in which the use or a nonconductive extinguishing agent prevents injury from electrical shock. Don’t use water. Class D: Certain flammable metallic substances such as sodium and potassium. These materials are normally not found in the Medical Center. Fire Extinguishers Fire extinguishers are classified as types A, ABC, BC or K. It is important to use the right type of extinguisher on the specific class of fire to avoid personal injury or damage to property. The wrong type of extinguisher could cause electrical shock, explosion, or spread the fire. Portable extinguishers are useful for putting out small fires; however they are not effective against large, spreading fires. In these situations, doors should be closed to contain the fire. Types of Fire Extinguishers Type A: Pressurized water to be used on Class A fire only. Do not use on Class B or C fires; may cause fire spread or electrical shock. Type ABC: Dry chemical effective on all classes of fires Type BC: Carbon dioxide to be used on chemical or electrical fires Type K: Used in kitchens on grease fires Locations ABC fire extinguishers are located throughout the Medical Centers in corridors. Specialty areas, such as th...

What are the FOUR Elements? Science Lesson: Earth, Water, Air, and Fire The ancient Greeks believed that there were four elements that everything was made up of: earth, water, air, and fire. This theory was suggested around 450 BC, and it was later supported and added to by Aristotle. (Aristotle also suggested that there was a fifth element, aether, because it seemed strange that the stars would be made out of earthly elements. He would be surprised to learn that they are in fact made up of many elements found on earth, and are so hot they could be said to be on fire all the time!) The idea that these four elements – earth, water, air, and fire – made up all matter was the cornerstone of philosophy, science, and medicine for two thousand years ( The elements were “pure” but could not be found in that state on earth. Every visible thing was made up of some combination of earth, water, air, and fire. The four elements were even used to described the four temperaments a person could have, and Hippocrates used the four elements to describe the four “humors” found in the body. These theories stated that the temperaments and humors needed to be in balance with each other in order for a person to be well both mentally and physically. While we do know now that these previous theories are false, in a way the four elements do align with the four states of matter that modern science has agreed on: solid (earth), liquid (water), gas (air), and plasma (fire). Although the Greeks believ...

New! High Road 2.0! We have a new version of this program. You can find it here: 2.18 Fires Truck fires can cause damage and injury. Learn the causes of fires and how to prevent them. Know what to do to extinguish fires. Following are some causes of vehicle fires: • After accidents - Spilled fuel, improper use of flares. • Tires - Underinflated tires and duals that touch. • Electrical system - Short circuits due to damaged insulation, loose connections. • Fuel - Driver smoking, improper fueling, loose fuel connections. • Cargo - Flammable cargo, improperly sealed or loaded, poor ventilation. Fire Prevention Pay attention to the following: • Pre-trip inspection - Make a complete inspection of the electrical, fuel and exhaust systems, tires and cargo. Be sure to check that the fire extinguisher is charged. • Enroute inspection - Check the tires, wheels and truck body for signs of heat whenever you stop during a trip. • Follow safety procedures - Follow correct safety procedures for fueling the vehicle, using brakes, handling flares and other activities that can cause a fire. • Monitoring - Check the instruments and gauges often for signs of overheating, and use the mirrors to look for signs of smoke from tires or the vehicle. Use normal caution in handling anything flammable. Fire Fighting Knowing how to fight fires is important. Fires have been made worse by drivers who do not know what to do. Know how the fire extinguisher works. Study the instructions printed on the extin...

Three elements are required in combination to ignite a fire and keep it burning – most common sources of ignition in the workplace. What is an Ignition Source? An ignition source is a thing or occurrence that has the potential to produce enough heat energy to ignite a flammable material or substance. Though many workplace items, materials and substances have the potential to catch fire, some industries are more abundant than others: industries which rely on processing flammable gases, liquids, materials and metals are far more likely to create a flammable environment than an office building or pet shop, for example. Some workplaces have easily identifiable ignition sources – such as a furnace or soldering iron, however, other sources may not be so obvious, placing extra importance on the need to conduct thorough Four Most Common Types of Ignition Sources in the Workplace Within the workplace, there are four common types of ignition sources to look out for: • Chemical • Electrical • Mechanical • Thermal We will explain them in more detail below. Chemical Sources of Ignition Although the fire triangle is the typical reaction required to cause a fire, you must also be aware of chemical ignitions, which are caused by exothermic reactions, such as exothermic polymerisation or a reaction between sodium metals and air. Electrical Sources of Ignition Even though electrical ignition sources are some of the most commonly considered sources of ignition, they are, perhaps, the most mi...

What are the FOUR Elements? Science Lesson: Earth, Water, Air, and Fire The ancient Greeks believed that there were four elements that everything was made up of: earth, water, air, and fire. This theory was suggested around 450 BC, and it was later supported and added to by Aristotle. (Aristotle also suggested that there was a fifth element, aether, because it seemed strange that the stars would be made out of earthly elements. He would be surprised to learn that they are in fact made up of many elements found on earth, and are so hot they could be said to be on fire all the time!) The idea that these four elements – earth, water, air, and fire – made up all matter was the cornerstone of philosophy, science, and medicine for two thousand years ( The elements were “pure” but could not be found in that state on earth. Every visible thing was made up of some combination of earth, water, air, and fire. The four elements were even used to described the four temperaments a person could have, and Hippocrates used the four elements to describe the four “humors” found in the body. These theories stated that the temperaments and humors needed to be in balance with each other in order for a person to be well both mentally and physically. While we do know now that these previous theories are false, in a way the four elements do align with the four states of matter that modern science has agreed on: solid (earth), liquid (water), gas (air), and plasma (fire). Although the Greeks believ...

New! High Road 2.0! We have a new version of this program. You can find it here: 2.18 Fires Truck fires can cause damage and injury. Learn the causes of fires and how to prevent them. Know what to do to extinguish fires. Following are some causes of vehicle fires: • After accidents - Spilled fuel, improper use of flares. • Tires - Underinflated tires and duals that touch. • Electrical system - Short circuits due to damaged insulation, loose connections. • Fuel - Driver smoking, improper fueling, loose fuel connections. • Cargo - Flammable cargo, improperly sealed or loaded, poor ventilation. Fire Prevention Pay attention to the following: • Pre-trip inspection - Make a complete inspection of the electrical, fuel and exhaust systems, tires and cargo. Be sure to check that the fire extinguisher is charged. • Enroute inspection - Check the tires, wheels and truck body for signs of heat whenever you stop during a trip. • Follow safety procedures - Follow correct safety procedures for fueling the vehicle, using brakes, handling flares and other activities that can cause a fire. • Monitoring - Check the instruments and gauges often for signs of overheating, and use the mirrors to look for signs of smoke from tires or the vehicle. Use normal caution in handling anything flammable. Fire Fighting Knowing how to fight fires is important. Fires have been made worse by drivers who do not know what to do. Know how the fire extinguisher works. Study the instructions printed on the extin...

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer See Answer See Answer done loading Question:Answer the following questions and select the correct statement: Which of the following is combinations make up the fire triangle Wood, fuel, candle Ignition, oxygen, fuel Fuel, Helium, spark Ignition, Spark, Combustion As the frequency of earthquakes increases, the risk location/risk response chart moves from low risk to higher risks. Answer the following questions and select the correct statement: Which of the following is combinations make up the fire triangle • Wood, fuel, candle • Ignition, oxygen, fuel • Fuel, Helium, spark • Ignition, Spark, Combustion As the frequency of earthquakes increases, the risk location/risk response chart moves from low risk to higher risks. • True • False Which of the following is not an occupational health and safety risk • Posture risk • Financial collapse • Radiation risk • Visual risk • Respiratory Risk Posture risk only leads to back pain and does not cause any long term injury to the body • True • False A risk evaluation is a combined effort to identify and analyze potential hazards to a process and make judgment on how to effectively mitigate impacts • True • False Asbestos poisoning affects only • Old people above 50 years old • Children in daycare • Workers in construction sites • All individuals exposed to the asbestos fiber What is the proper clothin...