1. What is the difference between the type of smog experienced by cities in the eastern United States and that found in Southern California? early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses. And Photochemical smog is the abundance of cars and sunshine that provided the perfect setting for a chemical reaction between some of the molecules in auto exhaust or oil refinery emissions. 2. London has suffered from terrible air pollution for at least seven centuries. Why is the city so prone to its famous “London fog?” What did London do to get rid of its air pollution? Because of The terrible events in Pennsylvania and London, plus the recognition of the hazards of photochemical smog. They did the Clean Air Act in 1970 in the United States. The act now regulates 189 pollutants. 3. …show more content…
What might be a reason why the city of San Francisco and its metropolitan area is not on the list of smoggiest cities for 2012? Maybe because they reduce somehow their pollution during that period. 5. Why are naturally occurring substances, such as particulates or carbon dioxide, sometimes considered pollutants? Because they are being used by humans such as volcanic ash. Dust is natural but exacerbated by human activities.
6. How does ozone form from vehicle exhaust? It is created by a chemical reaction that takes place in exhaust and in the presence of sunlight. 7. What are the necessary ingredients for ozone creation, excluding those that are readily available in the atmosphere? Why could there be a city with a lot of cars but relatively little ozone pollution? Cars, Trucks, PM, HC, NOx, CO, and SO2. Depending on what climate is in that city the ozone pollution would be high or low. 8. Some people say that we need to phase out fossil fuel use and replace it with clean energy. Why is fossil fuel use becoming undesirable? fossil fuels do not burn completely and the incomplete chemical reactions produce
There are various types of air pollution contributors in California such as fire generated pollutants and vehicle traffic, which add particulate matter and carbon monoxide into the air we breathe. According to an article by Union of Concerned Scientists (Cars, trucks, and air pollution, 2014) particulate matter is made up of fine particles soot and metal that can pose serious threats to human health when deep in the lungs. Other pollutants emitted from vehicles are: nitrogen oxide which lowers the body’s defense system against respiratory infections such as pneumonia, carbon monoxide which blocks oxygen from reaching vital organs, sulfur dioxide which is emitted by both power plants and vehicles affect children and asthmatics, and hazardous air pollutants (toxics) which are chemicals that are linked to cancer, birth defects and other illnesses (Union of Concerned Scientists, 2014).
Since human’s activity, pollution becomes a big problem in the world. There are a lot of part of pollutions include water pollution, light pollution and air pollution. Air pollution is happened in our life. The United States is also a victim of air pollution. In 1943, Los Angeles photochemical smog event occurred. The whole of Los Angeles was covered with smoke. There are about 400 people died and a lot of fruits in orchards began to wither.
Being one of the biggest social issues in Los Angeles, Air pollution has two main reasons: vehicle traffic and population growth. Actually, it is in a such crucial level that scientists indicate that air pollution in Los Angeles may endanger peoples lives. Scientific researches show that the air pollution causes cancer and have an impact on pregnant woman. Advertisements shows us some solutions like making public transportation common and sustainable housing. With the growing population of Los Angeles, something has to be done . Otherwise it is going to be impossible to deal with the air pollution. Population growth in Los
In the United States, Southern California is among the top cities ranked as having the worst air quality. According to the American Lung Association statement released annually, California has always been among the most polluted cities in the US in comparison to other states and the federal clean air act health standards. There are two primary air pollution agents in the city which include stationary sources and the transportation sources (Bereitschaft, Bradley and Keith Debbage, 612).
The most prominent example of this is Salt Lake City. It is the largest city in Utah, and it is also the most polluted. This is a problem for the citizens of Salt Lake City. The levels of pollution there have more frequently reached unhealthy levels in recent years. This creates a serious health risk to both those with breathing problems and those who are perfectly healthy. “For the last few years, [Salt Lake City] has been grappling with one of the nation's most vexing pollution problems, where atmospheric inversions during the winter months lead to a thick fog of dirty air cloaking the region.” (Seen) It is a severe problem that has only gotten worse with time. Just last year, Salt Lake
One is human activities. The other is natural actions. Human activities include: emissions from industries and manufacturing activities, burning fossil fuels, household and farming chemicals. On the other hand, natural actions that pollute the air include forest fires, volcanic eruptions and so on. These natural actions occur not very often and are not the dominant causes for the severe air pollution we face today.
The population growth in Beijing contributes to a big portion of its pollution. The population has risen from 11 million to 16 million in just 7 years, and has nearly doubled over the past century. Factories that utilize coal burning contribute to the smog currently present in Beijing. Many of these factories depend on outdated and inefficient technology which emits air pollutants. Beijing is a victim of its own topography since it's surrounded by mountains which traps pollution within the city. Air quality worsens in the spring and summer seasons when the humidity and temperature levels increase. Air pollution has been so drastic to the point that the city often engulfs in smog making it near zero visibility which in turn causing road
Los Angeles is one of the biggest cities with pollution and according to the LA Times, Los Angeles has again reached the list of the cities with the strong worst smog in the nation by violating federal health standards for ozone an average of 122 days a year (Barboza). Bonnie Holmes-Gen, a senior policy director of the American Lung Assn. in California said that air pollution in Los Angeles its literally putting the health of its people in danger (Barboza).
New York City has a significant air pollution problem that causes death for hundreds of people year round. Researchers at NYU’s medical school have reported that just
photochemical reaction which means car-exhaust emissions like nitrogen oxides combine with sunlight to create a pollutant. In a city of millions-like Los Angeles where nearly every person drives a car, smog forms quickly. In addition to the many car-emissions, smog also forms in Los Angeles as a result of the many industrial factories. Although Los Angeles now contains few of the (once ubiquitous) industrial plants, the pollution still moves in from neighboring cities. On a daily basis, thousands of grams of nitrogen dioxide enter the atmosphere. Los Angeles’ geography also makes it also a perfect smog trap as the mountains combined with the temperature inversions trap pollutants in an overheated bowl (Los Angeles: Traffic And Smog”).
Pollution is caused by both human and natural events. There are many different types of pollution. Some of these types of pollution include air, water, and land pollution.
Explain, using the chemical equations, how ozone forms in the stratosphere. Ozone is formed in the stratosphere through the “ozone-oxygen cycle”. This is where UV light hits a molecule of oxygen gas; breaks it apart and forms two separate oxygen atoms. O₂(g) + UV light → 2O(g)
Pollutants are Sulfur dioxide, Nitrogen oxide, Pm10 particles (Big particles in the air, dust ,matter, etc.) And Carbon monoxide
Photochemical smog is one type of air pollution. It is caused by burning fossil fuel and other combustion movement. The photochemical smog consists of pollutants such as automobile exhaust and industrial, wasted gas. They react with sunlight and poisonous smog is produced. It occurs more frequently in summer because of the intense sunlight.
The main reason of air pollution is an exposion of toxic and unnatural chemicals into the air. These chemicals are created due to exhaust gas, factory smoke, emissions from industries, farming chemicals, etc. The activities such as garbage burning or natural disasters such as forest fires or hurricanes pollute the air as well.