short essay on importance of air
Answers
Nitrogen- 78%
Oxygen- 20%
Carbon dioxide- 0.04%
Argon- 0.93%
Neon- 0.0018%
Helium- 0.00053%
Methane- 0.00018%
Nitrogen forms the maximum of the air. Oxygen comes next. But day by day due to increased pollution and deforestation the levels of carbon-dioxide is increasing to a scary percentage.
If matters continue to be like this then it not long when human population will face its extinction. Problems like global warming, melting of glaciers, epidemics, famines, droughts will kick in, in no time.
The air within the earth is contained as a giant gas ball called the atmosphere. The atmosphere is divided into layer. Each layer has its own characteristic property.
Exosphere: 700 to 10,000 km (440 to 6,200 miles)
Thermosphere: 80 to 700 km (50 to 440 miles)
Mesosphere: 50 to 80 km (31 to 50 miles)
Stratosphere: 12 to 50 km (7 to 31 miles)
Troposphere: 0 to 12 km (0 to 7 miles)
The air layer also saves us from various other things. The meteor showers and outer space particles frequently get bombarded on the earth’s upper layers of air. It frequently hits it but due to friction faced by the various layers of the atmosphere it gets burnt up and changes into tiny particles of dirt. Hence the atmosphere also saves us from getting hit by asteroids, comets and meteors
Not only this, the atmosphere contains another special layer called the ozone layer. It protects us from the harmful ultraviolet radiations of the sun. If ultraviolet radiations were allowed to enter the earth then if would fall on human bodies and cause different types of skin diseases and other problems.
One such problem is skin cancer which is increasing in recent years due to ozone layer depletion, also known as ozone hole
Trees are the main component to support life on earth. They purify the air. They provide us clean oxygen rich air.
Air pollution is one of the chief curses of modern science. Gone are the days of pristine purity. Thanks to nuclear explosions and industrial wastes, the air we breathe is getting more and more dangerous for our health. We can feel this without having to read scientific reports.
Often as we come to Calcutta or some other industrial city from the country side or from a less industrialized area, we ourselves experience breathing trouble. Our eyes burn and our noses get dirtier.
Air is used in many products nowadays. Air is used to fill tires of vehicles. Vehicles cannot run if the tires run flat. Air is filled into boats and rafters for river rafting. They are popular as water sports. Being light it glides very easily on water. Air is nowadays used in architecture as well.
Air is used to make the pneumatic structures. These are temporary types structures with an air filled membranous ceiling. These are made with tubes filled with air. It makes a durable, economic, light and faster type of building structure.
Air is used to push propellers of the windmills. Air is an important medium to generate electricity using wind energy. It is a renewable resource. The electricity produced by it is eco friendly. High velocity winds turn the blades of windmill to produce electricity.
Air is also a factor needed for incineration. Without air fire cannot burn. It needs continuous oxygen supply. Hence in power plants top generate electricity by burning coal, need of adequate air is an important necessity
Air is used in hot air balloons. There is a balloon filled with hydrogen or helium gas with an attached basket. This basket contains the passengers. The height of the balloon is adjusted by increasing or decreasing the burner flame that is providing the hot air.
Not only this, air is used in many products.
These products form the major parts of our lifestyle today-
Fluorescent lights- A fluorescent lamp tube is filled with a gas containing low pressure mercury vapor and argon, xenon, neon, or krypton. The pressure inside the lamp is around 0.3% of atmospheric pressure.
Incandescent bulbs– the filament of the bulb.....
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The Role of Air in Our Life
Air is essential for all living organisms. Without air, all living organisms directly and indirectly in need of it would be extinct. The existence of many scientific objects would be ineffective since air is matter and it has weight and mass. Its composition makes it extensively valuable in our daily lives. While looking at the role of air in our life, it is first of all necessary to understand its different components: nitrogen, oxygen, carbon dioxide, noble gases, and water. Each of these is relevant in its own way and this article will detail their roles as elements that make up air.
Nitrogen, having the largest composition of air (78%) is essential in many ways. Nitrogen helps in controlling water pollution from industrial waste. It is of major use in the industrial sectors in that it helps in destroying toxic substances. Nitrogen also helps plants in converting sunlight into energy during photosynthesis. Human beings consume nitrogen in their foods and it helps in bodybuilding as they serve as proteins.
Oxygen forms the second largest percentage composition (21%) of air. In addition, oxygen has very many uses to human beings, plants and animals. Oxygen is majorly used for respiration. Without oxygen, life would have been rendered invalid as it is most crucial for one’s survival. It is majorly used in hospitals for saving lives especially with regards to patients who have respiratory difficulties or those who have suffered from intoxications.
Carbon dioxide (0.04%) is very less likely crucial in our lives but it helps a great deal. Plants use carbon dioxide during photosynthesis and in the process oxygen is generated which is essential for respiratory purposes. Animals on the other hand produce carbon dioxide which is used by the plants. Both plants and animals are interdependent as they rely on each other for survival. In the cases of fire outbreaks, carbon dioxide is crucial as it helps in putting out the fire thus avoiding intoxication casualties.
Noble gases occupy the very least percentage. Despite that, they are very useful in our lives. For example, Neon gas is important for advertising. Helium being less dense is used in air-balloons which are mainly used for sight-seeing exercises.
All the above air components have other major uses but generally, air is very vital to our being. Cases of air and sound pollution are often pushed to the horizon. Air helps in minimizing air pollution in that too much wind blows away the polluted air making it distill. It also clears clogged gases in very busy towns and cities.
Air also helps in creating different weather conditions. When the sun rays heat a water body, vapor rises then condenses after a temperature drop to form water molecules which then comes down as rain.
Different sounds can be heard from short and long distances. Due to the existence of air, this is possible since air carries sound waves from one point to another.
The atmospheric pressure on the earth acts as a mantle. It prevents us from X-rays and other ultraviolet radiation which heats the earth’s surface. Air also makes it possible for objects such as meteors and comets to remain in space.
Change in the weather also brings about change in temperature. Too much sunshine makes the land temperature rise rapidly but gradually on water bodies. Air helps in balancing these temperature changes. Heated air on the land surface rises up while the cool air from water bodies moves to the land.
In minimizing traffic and time wastage, many people opt for air transport. This is faster and does not consume a lot of time since the distance is not that long.
In conclusion, air is very essential for survival and it also serves a very big role in our lives. Without air, life will not be possible on any planet.