Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. VOCs are released from gasoline, paints, and many cleaning solvents. When sunlight hits these chemicals, they form airborne particles and ground-level ozone —or smog.
What is the mixture of smog?
Smog is a form of air pollution. The word “smog” is a combination of the words “smoke” and “fog.” Smog is a mixture of many pollutants, mainly ground level ozone and fine particulate matter .
What is the main ingredient in smog?
Ozone at ground level is a harmful air pollutant, because of its effects on people and the environment, and it is the main ingredient in “smog.” Learn more about air emission sources.
What is smog in simple words?
: a fog made heavier and darker by smoke and chemical fumes also : a photochemical haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen especially from automobile exhaust.
What two ingredients make up smog?
Ground level ozone and airborne particles are the two air pollutants that pose the greatest risk to human health in the United States. They are also the two of the main ingredients in smog, a type of air pollution that reduces visibility.
Why is smog bad?
Smog can irritate your eyes, nose and throat . Or it can worsen existing heart and lung problems or perhaps cause lung cancer with regular long-term exposure. It also results in early death. Studies on ozone show that once it gets into your lungs, it can continue to cause damage even when you feel fine.
What are the 2 types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog . Sulfurous smog, which is also called “London smog,” results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
Does smog go away?
Smog won’t go away until a storm “clears” the air .
What type of smog is harmful?
Smog is a serious problem in many cities and continues to harm human health. Ground-level ozone, sulfur dioxide, nitrogen dioxide and carbon monoxide are especially harmful for senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma.
How does smog pollute the air?
Ground level ozone is created when sunlight reacts with certain chemicals that come from sources of burning fossil fuels, such as factories or car exhaust. When particles in the air combine with ozone , they create smog. Smog is a type of air pollution that looks like smoky fog and makes it difficult to see.
How can smog affect humans?
When inhaled, smog irritates our airways , increasing our risk of serious heart and lung diseases. These health risks are why many cities monitor smog levels. On a high ozone-alert day, for example, your eyes and throat may burn, and you may cough and wheeze.
What do you mean by smog * 1 point?
Smog is air pollution that reduces visibility . The term “smog” was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. ... When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog. Ozone can be helpful or harmful.
What are examples of smog?
Smog is a mix of fog and smoke, or a layer of polluted air. An example of smog is a low-lying yellow or brown layer of air . Fog that has become mixed and polluted with smoke.
Who has coined the term smog?
London, England, physician Harold Des Veaux coined the word smog in 1905 to describe natural fog contaminated by smoke: smoke + fog yielded smog.
How is smog harmful to the environment?
Environmental Impacts
Smog affects much more than just human lives; it also has a large impact on the surrounding physical environment. Ozone and PM in particular cause damaging effects: Ozone can damage plant cells and inhibit their growth , reducing the amount of carbon dioxide that they take in during photosynthesis.
Which statement is true about smog?
Answer: All the above statement are true. photochemical smog is composed of two types of pollutants .
