The composition of air differs from place to place and is not constant across the globe. For example, in heavily polluted countries, the air has a higher percentage of carbon dioxide. Below are the major components of air:
The term “air quality” refers to how pure or dirty the air is. Air quality is critical to monitor since contaminated air may be harmful to our health and the atmosphere.
The Air Quality Index, or AQI, is used to assess air quality. The AQI is identical to a thermometer that varies from 0 to 500 degrees Fahrenheit. The AQI, on the other hand, instead of displaying increases in weather, shows changes in the volume of emissions in the environment.
Ozone is a layer of gas that forms a crust high in the Earth’s atmosphere. This layer is beneficial because it protects us from the sun’s ultraviolet rays. Ground-level ozone, on the other hand, is harmful to human beings. Ground-level ozone is created when sunlight causes chemical reactions between gasses such as nitrogen dioxide, carbon monoxide, and methane. These gases are released into the atmosphere from various sources, including manufacturing plants, automobile emissions, fuel vapors, etc.
Particles and liquid droplets floating in the air are known as airborne objects. Construction facilities, smokestacks, vehicle exhaust pipes, explosions, volcanoes, and a variety of other causes release these particles into the environment. Chemical processes in the environment may also generate particles.
In this chapter, we learned about the basics of air and atmosphere. We gathered knowledge about air and its constituents. We learned about the factors that affect the quality of the air index.