essay on composition of air

Essay on Air Pollution for Students and Children

500+ words essay on air pollution.

Essay on Air Pollution – Earlier the air we breathe in use to be pure and fresh. But, due to increasing industrialization and concentration of poisonous gases in the environment the air is getting more and more toxic day by day. Also, these gases are the cause of many respiratory and other diseases . Moreover, the rapidly increasing human activities like the burning of fossil fuels, deforestation is the major cause of air pollution.

How Air Gets Polluted?

The fossil fuel , firewood, and other things that we burn produce oxides of carbons which got released into the atmosphere. Earlier there happens to be a large number of trees which can easily filter the air we breathe in. But with the increase in demand for land, the people started cutting down of trees which caused deforestation. That ultimately reduced the filtering capacity of the tree.

Moreover, during the last few decades, the numbers of fossil fuel burning vehicle increased rapidly which increased the number of pollutants in the air .

Causes Of Air Pollution

Its causes include burning of fossil fuel and firewood, smoke released from factories , volcanic eruptions, forest fires, bombardment, asteroids, CFCs (Chlorofluorocarbons), carbon oxides and many more.

Besides, there are some other air pollutants like industrial waste, agricultural waste, power plants, thermal nuclear plants, etc.

Greenhouse Effect

The greenhouse effect is also the cause of air pollution because air pollution produces the gases that greenhouse involves. Besides, it increases the temperature of earth surface so much that the polar caps are melting and most of the UV rays are easily penetrating the surface of the earth.

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Effects Of Air Pollution On Health

Moreover, it increases the rate of aging of lungs, decreases lungs function, damage cells in the respiratory system.

Ways To Reduce Air Pollution

Although the level of air pollution has reached a critical point. But, there are still ways by which we can reduce the number of air pollutants from the air.

Reforestation- The quality of air can be improved by planting more and more trees as they clean and filter the air.

Policy for industries- Strict policy for industries related to the filter of gases should be introduced in the countries. So, we can minimize the toxins released from factories.

Use of eco-friendly fuel-  We have to adopt the usage of Eco-friendly fuels such as LPG (Liquefied Petroleum Gas), CNG (Compressed Natural Gas), bio-gas, and other eco-friendly fuels. So, we can reduce the amount of harmful toxic gases.

To sum it up, we can say that the air we breathe is getting more and more polluted day by day. The biggest contribution to the increase in air pollution is of fossil fuels which produce nitric and sulphuric oxides. But, humans have taken this problem seriously and are devotedly working to eradicate the problem that they have created.

Above all, many initiatives like plant trees, use of eco-friendly fuel are promoted worldwide.

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ENCYCLOPEDIC ENTRY

Air pollution.

Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings.

Biology, Ecology, Earth Science, Geography

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Air pollution consists of chemicals or particles in the air that can harm the health of humans, animals, and plants. It also damages buildings. Pollutants in the air take many forms. They can be gases , solid particles, or liquid droplets. Sources of Air Pollution Pollution enters the Earth's atmosphere in many different ways. Most air pollution is created by people, taking the form of emissions from factories, cars, planes, or aerosol cans . Second-hand cigarette smoke is also considered air pollution. These man-made sources of pollution are called anthropogenic sources . Some types of air pollution, such as smoke from wildfires or ash from volcanoes , occur naturally. These are called natural sources . Air pollution is most common in large cities where emissions from many different sources are concentrated . Sometimes, mountains or tall buildings prevent air pollution from spreading out. This air pollution often appears as a cloud making the air murky. It is called smog . The word "smog" comes from combining the words "smoke" and " fog ." Large cities in poor and developing nations tend to have more air pollution than cities in developed nations. According to the World Health Organization (WHO) , some of the worlds most polluted cities are Karachi, Pakistan; New Delhi, India; Beijing, China; Lima, Peru; and Cairo, Egypt. However, many developed nations also have air pollution problems. Los Angeles, California, is nicknamed Smog City. Indoor Air Pollution Air pollution is usually thought of as smoke from large factories or exhaust from vehicles. But there are many types of indoor air pollution as well. Heating a house by burning substances such as kerosene , wood, and coal can contaminate the air inside the house. Ash and smoke make breathing difficult, and they can stick to walls, food, and clothing. Naturally-occurring radon gas, a cancer -causing material, can also build up in homes. Radon is released through the surface of the Earth. Inexpensive systems installed by professionals can reduce radon levels. Some construction materials, including insulation , are also dangerous to people's health. In addition, ventilation , or air movement, in homes and rooms can lead to the spread of toxic mold . A single colony of mold may exist in a damp, cool place in a house, such as between walls. The mold's spores enter the air and spread throughout the house. People can become sick from breathing in the spores. Effects On Humans People experience a wide range of health effects from being exposed to air pollution. Effects can be broken down into short-term effects and long-term effects . Short-term effects, which are temporary , include illnesses such as pneumonia or bronchitis . They also include discomfort such as irritation to the nose, throat, eyes, or skin. Air pollution can also cause headaches, dizziness, and nausea . Bad smells made by factories, garbage , or sewer systems are considered air pollution, too. These odors are less serious but still unpleasant . Long-term effects of air pollution can last for years or for an entire lifetime. They can even lead to a person's death. Long-term health effects from air pollution include heart disease , lung cancer, and respiratory diseases such as emphysema . Air pollution can also cause long-term damage to people's nerves , brain, kidneys , liver , and other organs. Some scientists suspect air pollutants cause birth defects . Nearly 2.5 million people die worldwide each year from the effects of outdoor or indoor air pollution. People react differently to different types of air pollution. Young children and older adults, whose immune systems tend to be weaker, are often more sensitive to pollution. Conditions such as asthma , heart disease, and lung disease can be made worse by exposure to air pollution. The length of exposure and amount and type of pollutants are also factors. Effects On The Environment Like people, animals, and plants, entire ecosystems can suffer effects from air pollution. Haze , like smog, is a visible type of air pollution that obscures shapes and colors. Hazy air pollution can even muffle sounds. Air pollution particles eventually fall back to Earth. Air pollution can directly contaminate the surface of bodies of water and soil . This can kill crops or reduce their yield . It can kill young trees and other plants. Sulfur dioxide and nitrogen oxide particles in the air, can create acid rain when they mix with water and oxygen in the atmosphere. These air pollutants come mostly from coal-fired power plants and motor vehicles . When acid rain falls to Earth, it damages plants by changing soil composition ; degrades water quality in rivers, lakes and streams; damages crops; and can cause buildings and monuments to decay . Like humans, animals can suffer health effects from exposure to air pollution. Birth defects, diseases, and lower reproductive rates have all been attributed to air pollution. Global Warming Global warming is an environmental phenomenon caused by natural and anthropogenic air pollution. It refers to rising air and ocean temperatures around the world. This temperature rise is at least partially caused by an increase in the amount of greenhouse gases in the atmosphere. Greenhouse gases trap heat energy in the Earths atmosphere. (Usually, more of Earths heat escapes into space.) Carbon dioxide is a greenhouse gas that has had the biggest effect on global warming. Carbon dioxide is emitted into the atmosphere by burning fossil fuels (coal, gasoline , and natural gas ). Humans have come to rely on fossil fuels to power cars and planes, heat homes, and run factories. Doing these things pollutes the air with carbon dioxide. Other greenhouse gases emitted by natural and artificial sources also include methane , nitrous oxide , and fluorinated gases. Methane is a major emission from coal plants and agricultural processes. Nitrous oxide is a common emission from industrial factories, agriculture, and the burning of fossil fuels in cars. Fluorinated gases, such as hydrofluorocarbons , are emitted by industry. Fluorinated gases are often used instead of gases such as chlorofluorocarbons (CFCs). CFCs have been outlawed in many places because they deplete the ozone layer . Worldwide, many countries have taken steps to reduce or limit greenhouse gas emissions to combat global warming. The Kyoto Protocol , first adopted in Kyoto, Japan, in 1997, is an agreement between 183 countries that they will work to reduce their carbon dioxide emissions. The United States has not signed that treaty . Regulation In addition to the international Kyoto Protocol, most developed nations have adopted laws to regulate emissions and reduce air pollution. In the United States, debate is under way about a system called cap and trade to limit emissions. This system would cap, or place a limit, on the amount of pollution a company is allowed. Companies that exceeded their cap would have to pay. Companies that polluted less than their cap could trade or sell their remaining pollution allowance to other companies. Cap and trade would essentially pay companies to limit pollution. In 2006 the World Health Organization issued new Air Quality Guidelines. The WHOs guidelines are tougher than most individual countries existing guidelines. The WHO guidelines aim to reduce air pollution-related deaths by 15 percent a year. Reduction Anybody can take steps to reduce air pollution. Millions of people every day make simple changes in their lives to do this. Taking public transportation instead of driving a car, or riding a bike instead of traveling in carbon dioxide-emitting vehicles are a couple of ways to reduce air pollution. Avoiding aerosol cans, recycling yard trimmings instead of burning them, and not smoking cigarettes are others.

Downwinders The United States conducted tests of nuclear weapons at the Nevada Test Site in southern Nevada in the 1950s. These tests sent invisible radioactive particles into the atmosphere. These air pollution particles traveled with wind currents, eventually falling to Earth, sometimes hundreds of miles away in states including Idaho, Utah, Arizona, and Washington. These areas were considered to be "downwind" from the Nevada Test Site. Decades later, people living in those downwind areascalled "downwinders"began developing cancer at above-normal rates. In 1990, the U.S. government passed the Radiation Exposure Compensation Act. This law entitles some downwinders to payments of $50,000.

Greenhouse Gases There are five major greenhouse gases in Earth's atmosphere.

• water vapor
• carbon dioxide
• nitrous oxide

London Smog What has come to be known as the London Smog of 1952, or the Great Smog of 1952, was a four-day incident that sickened 100,000 people and caused as many as 12,000 deaths. Very cold weather in December 1952 led residents of London, England, to burn more coal to keep warm. Smoke and other pollutants became trapped by a thick fog that settled over the city. The polluted fog became so thick that people could only see a few meters in front of them.

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Related Resources

The Chemical Composition of Air

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• Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
• B.A., Physics and Mathematics, Hastings College

Nearly all of the Earth's atmosphere is made up of only five gases : nitrogen, oxygen, water vapor, argon, and carbon dioxide. Several other compounds are also present.

• The primary component of air is nitrogen gas.
• Nitrogen, oxygen, water vapor, argon, and carbon dioxide account for about 99% of the composition of air.
• Trace gases include neon, methane, helium, krypton, hydrogen, xenon, ozone, and many other elements and compounds.
• The composition of air varies from one place to the next and even varies depending on whether it is day or night.

Table of Elements and Compounds in Air

Below is the composition of air in percent by volume, at sea level at 15 C and 101325 Pa.

• Nitrogen -- N 2 -- 78.084%
• Oxygen -- O 2 -- 20.9476%
• Argon -- Ar -- 0.934%
• Carbon Dioxide -- CO 2 -- 0.04%
• Neon -- Ne -- 0.001818%
• Methane -- CH 4 -- 0.0002%
• Helium -- He -- 0.000524%
• Krypton -- Kr -- 0.000114%
• Hydrogen -- H 2 -- 0.00005%
• Xenon -- Xe -- 0.0000087%
• Ozone -- O 3 -- 0.000007%
• Nitrogen Dioxide -- NO 2 -- 0.000002%
• Iodine -- I 2 -- 0.000001%
• Carbon Monoxide -- CO -- trace
• Ammonia -- NH 3 -- trace

Nitrogen, oxygen and argon are the three main components of the atmosphere. Water concentration varies, but averages around 0.25% of the atmosphere by mass. Carbon dioxide and all of the other elements and compounds are trace gases. Trace gases include the greenhouse gases carbon dioxide, methane, nitrous oxide, and ozone. Except for argon, other noble gases are trace elements. These include neon, helium, krypton, and xenon. Industrial pollutants include chlorine and its compounds, fluorine and its compounds, elemental mercury vapor, sulfur dioxide, and hydrogen sulfide. Other components of the atmosphere include spores, pollen, volcanic ash, and salt from sea spray.

Water Vapor in the Atmosphere

Although this CRC table does not list water vapor (H 2 O), air can contain as much as 5% water vapor, more commonly ranging from 1-3%. The 1-5% range places water vapor as the third most common gas (which alters the other percentages accordingly). Water content varies according to air temperature. Dry air is denser than humid air. However, sometimes humid air contains actual water droplets, which can make it more dense than humid air that only contains water vapor.

Air Pollution

Air pollution varies according to geographical location and also where it occurs in the air column. Pollutants include chemicals, particulates like dust and ash, and biological matter, like pollen and bacteria.

The Ozone Layer

Ozone (O 3 ) is unevenly distributed throughout the Earth's atmosphere. The ozone layer is a portion of the stratosphere from 15 to 35 kilometers (9.3 to 21.7 miles). However, its thickness varies geographically and seasonally. The ozone layer contains about 90% of the atmospheric ozone, with a concentration of 2 to 8 parts per million. Even though this is a much higher concentration of ozone than occurs in the troposphere, ozone is still just a trace gas in the ozone layer.

Homosphere and Heterosphere

The homosphere is the portion of the atmosphere with a fairly uniform composition due to atmospheric turbulence. In contrast, the heterosphere is the part of the atmosphere where chemical composition varies mainly according to altitude.

The homosphere includes the lower layers of the atmosphere: the troposphere, stratosphere, mesosphere, and lower thermosphere. The turbopause, at around 100 kilometers or 62 miles, is the edge of space and roughly the limit of the homosphere.

Above this layer, the heterosphere includes the exosphere and thermosphere. The lower portion of the heterosphere contains oxygen and nitrogen, but these heavier elements do no occur higher up. The upper heterosphere consists almost entirely of hydrogen.

• Barry, R.G.; Chorley, R.J. (1971). Atmosphere, Weather and Climate . London: Menthuen & Co Ltd. ISBN 9780416079401.
• Lide, David R. (1997). CRC Handbook of Chemistry and Physics . Boca Raton, FL: CRC. 14-17.
• Lutgens, Frederick K.; Tarbuck, Edward J. (1995). The Atmosphere (6th ed.). Prentice Hall. ISBN 0-13-350612-6.
• Martin, Daniel; McKenna, Helen; Livina, Valerie (2016). "The human physiological impact of global deoxygenation". The Journal of Physiological Sciences . 67 (1): 97–106. doi:10.1007/s12576-016-0501-0
• Wallace, John M.; Hobbs, Peter V. (2006). Atmospheric Science: An Introductory Survey (2nd ed.). Elsevier. ISBN 978-0-12-732951-2.
• The 4 Most Abundant Gases in Earth's Atmosphere
• What Is the Most Abundant Gas in Earth's Atmosphere?
• Names and Uses of 10 Common Gases
• 10 Argon Facts - Ar or Atomic Number 18
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• Exosphere Definition and Facts
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• What Is the Moon Made Of?
• Definition of Air in Science
• Ozone Layer Depletion
• The 5 Layers of the Atmosphere
• Atmospheric Science: What Is an Ozone Warning?
• The Oxygen Revolution
• What Is Fire Made Of?
• Exploring the Earth's Four Spheres

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Air Pollution Essay for Students in English: 100, 200 and 500 Words

Air pollution is becoming a serious issue that’s affecting human health, flora and fauna and overall well-being of Earth. As responsible citizens of the world, it’s our duty to take care of anything that’s harming the planet and leave it in better condition for future generations. Here are a few sample essays children can use to write about air pollution and learn about different ways to mitigate this crisis.

100 Words Essay on Air Pollution

200 words essay on air pollution, 500 words essay on air pollution.

Any physical, chemical, or biological alteration in the air is referred to as air pollution. The atmosphere contains a specific portion of the gas. It is harmful to survival to change the makeup of these gases. “Global warming” is the term used to describe the rise in global temperature caused by this imbalance in gas composition. Hazardous pollutants, whether present naturally or artificially, can modify the environment and have a negative impact on the ecosystem. Ineffective resource management and reckless human activity are harming the environment and therefore it is our responsibility as inhabitants of Earth to take care of it.

Pollution is any activity that tampers with the environment's fundamental characteristics and causes damage. The air we breathe is no longer clean and fresh, it has been contaminated by pollutants. The threat to Earth and its ecosystem is getting worse as a result of the contamination of the air, water, and soil. These pollutants are causing a number of respiratory and cardiovascular diseases—our immune system is getting affected negatively, and children are at a high risk of developing asthma and other breathing problems. There are numerous factors that frequently increase this air pollution. Automobiles, transportation methods, industrialization, expanding cities, etc. are the main causes of air pollution. The contamination of the entire atmosphere is brought on by the release of various toxic gases or dangerous components from such sources.

Air pollution, which has a negative impact on the environment, also has a significant impact on the ozone layer. The primary contributor to pollution is the ever-increasing demands of the human population. Daily human activities pump harmful chemicals into the atmosphere, making it more polluted than ever and accelerating climate change. The flora and fauna are also being severely impacted by the airborne harmful chemical releases. The rising contamination of the Earth's air, water, and soil—the essential life support systems of the planet—poses a major threat to the planet and its environment.

One of today's top environmental concerns is air pollution. There are numerous factors that frequently increase this air pollution. Toxic gases, particulates, paint, and batteries containing lead are released throughout the industrialization process. The ozone layer is also being destroyed and the world is being exposed to dangerous solar rays as a result of all the contaminants in touch with the atmosphere.

Ozone is a contaminant that exists at the ground level and can be harmful to human health. But the same ozone creates a layer of defence in the stratosphere. The "good" ozone, however, is being destroyed by ozone-depleting substances—such as hydrochlorofluorocarbons, and chlorofluorocarbons. These chemicals were once used in coolants, foaming agents, insecticides, solvents, and fire extinguishers and occasionally still are.

Primary and secondary pollutants are the two categories that have emerged as a result of the growing number of air pollutants. Primary pollutants, which include smoke, ash, dust, fumes, mist, spray, inorganic gases, carbon dioxide, carbon monoxide, and radioactive substances, have a direct negative impact on fresh air. Secondary pollutants are those that interact chemically with primary pollutants, as well as other elements in the atmosphere, such as sulphate trioxide, ozone, hydrocarbons, and nitrogen dioxide.

Causes of Air Pollution

The disposal of solid wastes that release methane gas and the breakdown of trash landfills are major sources of air pollution. This problem has become a severe environmental and health issue as a result of the population's rapid development, industrialisation, and greater use of cars, planes, and other transportation.

Common Effects of Air Pollution

Pollutants in the air we breathe every minute enter our bloodstream and travel to our lungs and entire body, producing a plethora of health issues. Animals can have health issues similar to people if they are exposed to air toxics in high enough quantities over an extended period of time. Air toxics also play a role in animal sickness, infertility, and birth abnormalities. Therefore, both directly and indirectly, pollution of the environment harms both plants, animals, and people.

What Can We Do

Using public transportation is a surefire short method to reduce air pollution because it uses less gas and electricity, even carpools help with the situation. A permanent, non-polluting, and extremely secure source of energy is the sun or solar power. Solar panels, which are special in design and simple to install, are also a technical benefit to society and the planet. They take in solar energy and store it to power various equipment and electronics. Another step you can take on this path is to plant more trees and live a simplistic life. Minimalist living is not only a trendy millennial lifestyle, but it also has significant societal and environmental benefits.

Air pollution may reach one million tonnes annually in the next decades if environmental protection measures are not taken seriously and effectively enforced. We need to drastically alter our everyday routines if we want to lower the level of air pollution. By making better use of raw materials, water energy, and other resources, we can reduce pollution. Human health can be safeguarded and economic wellbeing can be increased when less harmful compounds are exchanged for hazardous ones.

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Data Administrator

Database professionals use software to store and organise data such as financial information, and customer shipping records. Individuals who opt for a career as data administrators ensure that data is available for users and secured from unauthorised sales. DB administrators may work in various types of industries. It may involve computer systems design, service firms, insurance companies, banks and hospitals.

Bio Medical Engineer

The field of biomedical engineering opens up a universe of expert chances. An Individual in the biomedical engineering career path work in the field of engineering as well as medicine, in order to find out solutions to common problems of the two fields. The biomedical engineering job opportunities are to collaborate with doctors and researchers to develop medical systems, equipment, or devices that can solve clinical problems. Here we will be discussing jobs after biomedical engineering, how to get a job in biomedical engineering, biomedical engineering scope, and salary. 

Ethical Hacker

A career as ethical hacker involves various challenges and provides lucrative opportunities in the digital era where every giant business and startup owns its cyberspace on the world wide web. Individuals in the ethical hacker career path try to find the vulnerabilities in the cyber system to get its authority. If he or she succeeds in it then he or she gets its illegal authority. Individuals in the ethical hacker career path then steal information or delete the file that could affect the business, functioning, or services of the organization.

GIS officer work on various GIS software to conduct a study and gather spatial and non-spatial information. GIS experts update the GIS data and maintain it. The databases include aerial or satellite imagery, latitudinal and longitudinal coordinates, and manually digitized images of maps. In a career as GIS expert, one is responsible for creating online and mobile maps.

Data Analyst

The invention of the database has given fresh breath to the people involved in the data analytics career path. Analysis refers to splitting up a whole into its individual components for individual analysis. Data analysis is a method through which raw data are processed and transformed into information that would be beneficial for user strategic thinking.

Data are collected and examined to respond to questions, evaluate hypotheses or contradict theories. It is a tool for analyzing, transforming, modeling, and arranging data with useful knowledge, to assist in decision-making and methods, encompassing various strategies, and is used in different fields of business, research, and social science.

Geothermal Engineer

Individuals who opt for a career as geothermal engineers are the professionals involved in the processing of geothermal energy. The responsibilities of geothermal engineers may vary depending on the workplace location. Those who work in fields design facilities to process and distribute geothermal energy. They oversee the functioning of machinery used in the field.

Database Architect

If you are intrigued by the programming world and are interested in developing communications networks then a career as database architect may be a good option for you. Data architect roles and responsibilities include building design models for data communication networks. Wide Area Networks (WANs), local area networks (LANs), and intranets are included in the database networks. It is expected that database architects will have in-depth knowledge of a company's business to develop a network to fulfil the requirements of the organisation. Stay tuned as we look at the larger picture and give you more information on what is db architecture, why you should pursue database architecture, what to expect from such a degree and what your job opportunities will be after graduation. Here, we will be discussing how to become a data architect. Students can visit NIT Trichy , IIT Kharagpur , JMI New Delhi . 

Remote Sensing Technician

Individuals who opt for a career as a remote sensing technician possess unique personalities. Remote sensing analysts seem to be rational human beings, they are strong, independent, persistent, sincere, realistic and resourceful. Some of them are analytical as well, which means they are intelligent, introspective and inquisitive. 

Remote sensing scientists use remote sensing technology to support scientists in fields such as community planning, flight planning or the management of natural resources. Analysing data collected from aircraft, satellites or ground-based platforms using statistical analysis software, image analysis software or Geographic Information Systems (GIS) is a significant part of their work. Do you want to learn how to become remote sensing technician? There's no need to be concerned; we've devised a simple remote sensing technician career path for you. Scroll through the pages and read.

Budget Analyst

Budget analysis, in a nutshell, entails thoroughly analyzing the details of a financial budget. The budget analysis aims to better understand and manage revenue. Budget analysts assist in the achievement of financial targets, the preservation of profitability, and the pursuit of long-term growth for a business. Budget analysts generally have a bachelor's degree in accounting, finance, economics, or a closely related field. Knowledge of Financial Management is of prime importance in this career.

Underwriter

An underwriter is a person who assesses and evaluates the risk of insurance in his or her field like mortgage, loan, health policy, investment, and so on and so forth. The underwriter career path does involve risks as analysing the risks means finding out if there is a way for the insurance underwriter jobs to recover the money from its clients. If the risk turns out to be too much for the company then in the future it is an underwriter who will be held accountable for it. Therefore, one must carry out his or her job with a lot of attention and diligence.

Finance Executive

Product manager.

A Product Manager is a professional responsible for product planning and marketing. He or she manages the product throughout the Product Life Cycle, gathering and prioritising the product. A product manager job description includes defining the product vision and working closely with team members of other departments to deliver winning products.  

Operations Manager

Individuals in the operations manager jobs are responsible for ensuring the efficiency of each department to acquire its optimal goal. They plan the use of resources and distribution of materials. The operations manager's job description includes managing budgets, negotiating contracts, and performing administrative tasks.

Stock Analyst

Individuals who opt for a career as a stock analyst examine the company's investments makes decisions and keep track of financial securities. The nature of such investments will differ from one business to the next. Individuals in the stock analyst career use data mining to forecast a company's profits and revenues, advise clients on whether to buy or sell, participate in seminars, and discussing financial matters with executives and evaluate annual reports.

A Researcher is a professional who is responsible for collecting data and information by reviewing the literature and conducting experiments and surveys. He or she uses various methodological processes to provide accurate data and information that is utilised by academicians and other industry professionals. Here, we will discuss what is a researcher, the researcher's salary, types of researchers.

Welding Engineer

Welding Engineer Job Description: A Welding Engineer work involves managing welding projects and supervising welding teams. He or she is responsible for reviewing welding procedures, processes and documentation. A career as Welding Engineer involves conducting failure analyses and causes on welding issues. 

Transportation Planner

A career as Transportation Planner requires technical application of science and technology in engineering, particularly the concepts, equipment and technologies involved in the production of products and services. In fields like land use, infrastructure review, ecological standards and street design, he or she considers issues of health, environment and performance. A Transportation Planner assigns resources for implementing and designing programmes. He or she is responsible for assessing needs, preparing plans and forecasts and compliance with regulations.

Environmental Engineer

Individuals who opt for a career as an environmental engineer are construction professionals who utilise the skills and knowledge of biology, soil science, chemistry and the concept of engineering to design and develop projects that serve as solutions to various environmental problems. 

Safety Manager

A Safety Manager is a professional responsible for employee’s safety at work. He or she plans, implements and oversees the company’s employee safety. A Safety Manager ensures compliance and adherence to Occupational Health and Safety (OHS) guidelines.

Conservation Architect

A Conservation Architect is a professional responsible for conserving and restoring buildings or monuments having a historic value. He or she applies techniques to document and stabilise the object’s state without any further damage. A Conservation Architect restores the monuments and heritage buildings to bring them back to their original state.

Structural Engineer

A Structural Engineer designs buildings, bridges, and other related structures. He or she analyzes the structures and makes sure the structures are strong enough to be used by the people. A career as a Structural Engineer requires working in the construction process. It comes under the civil engineering discipline. A Structure Engineer creates structural models with the help of computer-aided design software. 

Highway Engineer

Highway Engineer Job Description:  A Highway Engineer is a civil engineer who specialises in planning and building thousands of miles of roads that support connectivity and allow transportation across the country. He or she ensures that traffic management schemes are effectively planned concerning economic sustainability and successful implementation.

Field Surveyor

Are you searching for a Field Surveyor Job Description? A Field Surveyor is a professional responsible for conducting field surveys for various places or geographical conditions. He or she collects the required data and information as per the instructions given by senior officials. 

Orthotist and Prosthetist

Orthotists and Prosthetists are professionals who provide aid to patients with disabilities. They fix them to artificial limbs (prosthetics) and help them to regain stability. There are times when people lose their limbs in an accident. In some other occasions, they are born without a limb or orthopaedic impairment. Orthotists and prosthetists play a crucial role in their lives with fixing them to assistive devices and provide mobility.

Pathologist

A career in pathology in India is filled with several responsibilities as it is a medical branch and affects human lives. The demand for pathologists has been increasing over the past few years as people are getting more aware of different diseases. Not only that, but an increase in population and lifestyle changes have also contributed to the increase in a pathologist’s demand. The pathology careers provide an extremely huge number of opportunities and if you want to be a part of the medical field you can consider being a pathologist. If you want to know more about a career in pathology in India then continue reading this article.

Veterinary Doctor

Speech therapist, gynaecologist.

Gynaecology can be defined as the study of the female body. The job outlook for gynaecology is excellent since there is evergreen demand for one because of their responsibility of dealing with not only women’s health but also fertility and pregnancy issues. Although most women prefer to have a women obstetrician gynaecologist as their doctor, men also explore a career as a gynaecologist and there are ample amounts of male doctors in the field who are gynaecologists and aid women during delivery and childbirth. 

Audiologist

The audiologist career involves audiology professionals who are responsible to treat hearing loss and proactively preventing the relevant damage. Individuals who opt for a career as an audiologist use various testing strategies with the aim to determine if someone has a normal sensitivity to sounds or not. After the identification of hearing loss, a hearing doctor is required to determine which sections of the hearing are affected, to what extent they are affected, and where the wound causing the hearing loss is found. As soon as the hearing loss is identified, the patients are provided with recommendations for interventions and rehabilitation such as hearing aids, cochlear implants, and appropriate medical referrals. While audiology is a branch of science that studies and researches hearing, balance, and related disorders.

An oncologist is a specialised doctor responsible for providing medical care to patients diagnosed with cancer. He or she uses several therapies to control the cancer and its effect on the human body such as chemotherapy, immunotherapy, radiation therapy and biopsy. An oncologist designs a treatment plan based on a pathology report after diagnosing the type of cancer and where it is spreading inside the body.

Are you searching for an ‘Anatomist job description’? An Anatomist is a research professional who applies the laws of biological science to determine the ability of bodies of various living organisms including animals and humans to regenerate the damaged or destroyed organs. If you want to know what does an anatomist do, then read the entire article, where we will answer all your questions.

For an individual who opts for a career as an actor, the primary responsibility is to completely speak to the character he or she is playing and to persuade the crowd that the character is genuine by connecting with them and bringing them into the story. This applies to significant roles and littler parts, as all roles join to make an effective creation. Here in this article, we will discuss how to become an actor in India, actor exams, actor salary in India, and actor jobs. 

Individuals who opt for a career as acrobats create and direct original routines for themselves, in addition to developing interpretations of existing routines. The work of circus acrobats can be seen in a variety of performance settings, including circus, reality shows, sports events like the Olympics, movies and commercials. Individuals who opt for a career as acrobats must be prepared to face rejections and intermittent periods of work. The creativity of acrobats may extend to other aspects of the performance. For example, acrobats in the circus may work with gym trainers, celebrities or collaborate with other professionals to enhance such performance elements as costume and or maybe at the teaching end of the career.

Video Game Designer

Career as a video game designer is filled with excitement as well as responsibilities. A video game designer is someone who is involved in the process of creating a game from day one. He or she is responsible for fulfilling duties like designing the character of the game, the several levels involved, plot, art and similar other elements. Individuals who opt for a career as a video game designer may also write the codes for the game using different programming languages.

Depending on the video game designer job description and experience they may also have to lead a team and do the early testing of the game in order to suggest changes and find loopholes.

Radio Jockey

Radio Jockey is an exciting, promising career and a great challenge for music lovers. If you are really interested in a career as radio jockey, then it is very important for an RJ to have an automatic, fun, and friendly personality. If you want to get a job done in this field, a strong command of the language and a good voice are always good things. Apart from this, in order to be a good radio jockey, you will also listen to good radio jockeys so that you can understand their style and later make your own by practicing.

A career as radio jockey has a lot to offer to deserving candidates. If you want to know more about a career as radio jockey, and how to become a radio jockey then continue reading the article.

Choreographer

The word “choreography" actually comes from Greek words that mean “dance writing." Individuals who opt for a career as a choreographer create and direct original dances, in addition to developing interpretations of existing dances. A Choreographer dances and utilises his or her creativity in other aspects of dance performance. For example, he or she may work with the music director to select music or collaborate with other famous choreographers to enhance such performance elements as lighting, costume and set design.

Social Media Manager

A career as social media manager involves implementing the company’s or brand’s marketing plan across all social media channels. Social media managers help in building or improving a brand’s or a company’s website traffic, build brand awareness, create and implement marketing and brand strategy. Social media managers are key to important social communication as well.

Photographer

Photography is considered both a science and an art, an artistic means of expression in which the camera replaces the pen. In a career as a photographer, an individual is hired to capture the moments of public and private events, such as press conferences or weddings, or may also work inside a studio, where people go to get their picture clicked. Photography is divided into many streams each generating numerous career opportunities in photography. With the boom in advertising, media, and the fashion industry, photography has emerged as a lucrative and thrilling career option for many Indian youths.

An individual who is pursuing a career as a producer is responsible for managing the business aspects of production. They are involved in each aspect of production from its inception to deception. Famous movie producers review the script, recommend changes and visualise the story. 

They are responsible for overseeing the finance involved in the project and distributing the film for broadcasting on various platforms. A career as a producer is quite fulfilling as well as exhaustive in terms of playing different roles in order for a production to be successful. Famous movie producers are responsible for hiring creative and technical personnel on contract basis.

Copy Writer

In a career as a copywriter, one has to consult with the client and understand the brief well. A career as a copywriter has a lot to offer to deserving candidates. Several new mediums of advertising are opening therefore making it a lucrative career choice. Students can pursue various copywriter courses such as Journalism , Advertising , Marketing Management . Here, we have discussed how to become a freelance copywriter, copywriter career path, how to become a copywriter in India, and copywriting career outlook. 

In a career as a vlogger, one generally works for himself or herself. However, once an individual has gained viewership there are several brands and companies that approach them for paid collaboration. It is one of those fields where an individual can earn well while following his or her passion. 

Ever since internet costs got reduced the viewership for these types of content has increased on a large scale. Therefore, a career as a vlogger has a lot to offer. If you want to know more about the Vlogger eligibility, roles and responsibilities then continue reading the article. 

For publishing books, newspapers, magazines and digital material, editorial and commercial strategies are set by publishers. Individuals in publishing career paths make choices about the markets their businesses will reach and the type of content that their audience will be served. Individuals in book publisher careers collaborate with editorial staff, designers, authors, and freelance contributors who develop and manage the creation of content.

Careers in journalism are filled with excitement as well as responsibilities. One cannot afford to miss out on the details. As it is the small details that provide insights into a story. Depending on those insights a journalist goes about writing a news article. A journalism career can be stressful at times but if you are someone who is passionate about it then it is the right choice for you. If you want to know more about the media field and journalist career then continue reading this article.

Individuals in the editor career path is an unsung hero of the news industry who polishes the language of the news stories provided by stringers, reporters, copywriters and content writers and also news agencies. Individuals who opt for a career as an editor make it more persuasive, concise and clear for readers. In this article, we will discuss the details of the editor's career path such as how to become an editor in India, editor salary in India and editor skills and qualities.

Individuals who opt for a career as a reporter may often be at work on national holidays and festivities. He or she pitches various story ideas and covers news stories in risky situations. Students can pursue a BMC (Bachelor of Mass Communication) , B.M.M. (Bachelor of Mass Media) , or  MAJMC (MA in Journalism and Mass Communication) to become a reporter. While we sit at home reporters travel to locations to collect information that carries a news value.  

Corporate Executive

Are you searching for a Corporate Executive job description? A Corporate Executive role comes with administrative duties. He or she provides support to the leadership of the organisation. A Corporate Executive fulfils the business purpose and ensures its financial stability. In this article, we are going to discuss how to become corporate executive.

Multimedia Specialist

A multimedia specialist is a media professional who creates, audio, videos, graphic image files, computer animations for multimedia applications. He or she is responsible for planning, producing, and maintaining websites and applications. 

Quality Controller

A quality controller plays a crucial role in an organisation. He or she is responsible for performing quality checks on manufactured products. He or she identifies the defects in a product and rejects the product. 

A quality controller records detailed information about products with defects and sends it to the supervisor or plant manager to take necessary actions to improve the production process.

Production Manager

A QA Lead is in charge of the QA Team. The role of QA Lead comes with the responsibility of assessing services and products in order to determine that he or she meets the quality standards. He or she develops, implements and manages test plans. 

Process Development Engineer

The Process Development Engineers design, implement, manufacture, mine, and other production systems using technical knowledge and expertise in the industry. They use computer modeling software to test technologies and machinery. An individual who is opting career as Process Development Engineer is responsible for developing cost-effective and efficient processes. They also monitor the production process and ensure it functions smoothly and efficiently.

AWS Solution Architect

An AWS Solution Architect is someone who specializes in developing and implementing cloud computing systems. He or she has a good understanding of the various aspects of cloud computing and can confidently deploy and manage their systems. He or she troubleshoots the issues and evaluates the risk from the third party. 

Azure Administrator

An Azure Administrator is a professional responsible for implementing, monitoring, and maintaining Azure Solutions. He or she manages cloud infrastructure service instances and various cloud servers as well as sets up public and private cloud systems. 

Computer Programmer

Careers in computer programming primarily refer to the systematic act of writing code and moreover include wider computer science areas. The word 'programmer' or 'coder' has entered into practice with the growing number of newly self-taught tech enthusiasts. Computer programming careers involve the use of designs created by software developers and engineers and transforming them into commands that can be implemented by computers. These commands result in regular usage of social media sites, word-processing applications and browsers.

Information Security Manager

Individuals in the information security manager career path involves in overseeing and controlling all aspects of computer security. The IT security manager job description includes planning and carrying out security measures to protect the business data and information from corruption, theft, unauthorised access, and deliberate attack 

ITSM Manager

Automation test engineer.

An Automation Test Engineer job involves executing automated test scripts. He or she identifies the project’s problems and troubleshoots them. The role involves documenting the defect using management tools. He or she works with the application team in order to resolve any issues arising during the testing process. 

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Essay on Air

Students are often asked to write an essay on Air in their schools and colleges. And if you’re also looking for the same, we have created 100-word, 250-word, and 500-word essays on the topic.

Let’s take a look…

100 Words Essay on Air

What is air.

Air is a mixture of gases that completely surrounds the Earth. It’s invisible to our eyes, yet it’s vital for life. The main components are nitrogen, oxygen, and small amounts of other gases.

The Importance of Air

Air is essential for all living beings. Humans and animals breathe in oxygen from the air, which is needed for survival. Plants also use carbon dioxide from the air for photosynthesis.

Air and Weather

Air plays a key role in weather changes. The movement of air can cause different weather patterns, including wind, rain, and storms.

Protecting Our Air

Air pollution is a serious issue. It’s important to reduce pollution to keep our air clean and safe to breathe.

Also check:

• 10 Lines on Air
• Paragraph on Air
• Speech on Air

250 Words Essay on Air

Introduction.

Air, an invisible yet indispensable component of our existence, provides the life-sustaining oxygen we need. This gaseous mixture, enveloping the Earth, plays a crucial role in the survival and functioning of all living organisms.

Composition of Air

Air is a blend of various gases, primarily nitrogen (78%) and oxygen (21%). The remaining 1% comprises argon, carbon dioxide, neon, helium, and other trace gases. This delicate balance of gases is essential for maintaining life and the Earth’s climate.

Importance of Air

Air is vital for respiration, a fundamental process for most life forms. It aids in combustion, which is crucial for generating energy. Furthermore, the air’s constituents like carbon dioxide facilitate photosynthesis in plants, driving the Earth’s carbon cycle.

Air and Climate

Air plays a pivotal role in regulating the Earth’s climate. The greenhouse gases in air trap heat, helping maintain the planet’s temperature. However, human activities are disturbing this balance, leading to global warming.

Air Pollution

Air pollution, a pressing issue, is primarily caused by the release of harmful substances into the air. This not only deteriorates air quality but also poses severe health risks and environmental challenges.

To conclude, air, while often overlooked, is a fundamental element of life and our environment. Understanding its composition, importance, and the threats it faces is crucial in our pursuit to maintain a healthy, sustainable planet.

500 Words Essay on Air

Introduction: the invisible necessity.

Air, an omnipresent yet often overlooked aspect of our existence, plays a critical role in sustaining life on Earth. It is a mixture of various gases, primarily nitrogen and oxygen, with trace amounts of other gases like carbon dioxide, argon, and others. This essay will delve into the importance of air, its composition, and the impact of human activities on its quality.

Composition of Air: A Delicate Balance

The air we breathe is a complex cocktail of gases. Nitrogen, the most abundant component, makes up approximately 78% of the atmosphere. Oxygen, vital for our survival, comprises around 21%. The remaining 1% consists of other gases such as argon, carbon dioxide, neon, helium, and methane. This delicate balance of gases is crucial for maintaining life on Earth. Nitrogen is essential for plant growth, while oxygen is needed for respiration in animals and humans. Carbon dioxide, despite its small proportion, plays a significant role in photosynthesis and regulating the Earth’s temperature.

The Role of Air: Beyond Breathing

While the importance of air for respiration is well-known, its other roles are equally crucial. Air acts as an insulator, maintaining the Earth’s temperature by trapping heat. This natural greenhouse effect is vital for sustaining life. Additionally, air pressure influences weather patterns, enabling the formation of wind, rain, and other weather phenomena. Air also aids in the dispersion of seeds and pollens, promoting biodiversity.

Human Impact: Altering the Airscape

Human activities have significantly impacted the quality of air. Industrialization, deforestation, and the burning of fossil fuels have led to an increase in the levels of pollutants like carbon dioxide, sulfur dioxide, and nitrogen oxides. These pollutants not only deteriorate air quality, causing health issues, but also contribute to global warming and climate change.

Climate Change: A Disturbing Ripple Effect

Excessive carbon dioxide in the air enhances the greenhouse effect, leading to global warming. This warming effect disrupts weather patterns, leading to extreme weather events and threatening biodiversity. Moreover, it causes the melting of polar ice caps, resulting in rising sea levels and posing a grave threat to coastal regions.

Conclusion: The Call for Conscious Efforts

In conclusion, air, though invisible, is a vital part of our ecosystem. Its balanced composition and the roles it plays are essential for maintaining life and biodiversity on Earth. However, human activities have disrupted this balance, leading to air pollution and climate change. It is crucial for us to recognize the importance of air and make conscious efforts to reduce our carbon footprint and preserve the quality of air for future generations. By doing so, we can ensure the continued sustenance of life on our planet.

That’s it! I hope the essay helped you.

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• Essay on Air Force
• Essay on Air Conditioner
• Essay on Agra

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• Biology Article
• Essay On Air Pollution 200 Words 500 Words

Essay on Air Pollution

Essay on air pollution is a crucial topic for students from an academic perspective. Moreover, an essay is one of the most effective ways to educate students about the plight of nature and the repercussions of human activities. Creating awareness for future generations is important if we have to undo decades of ignorance and neglect.

Furthermore, air pollution essay helps students to realize the gravity of the scenario and enable them to take action. Some as simple as using public transport or even carpooling will help reduce a significant amount of air pollution. Read on to discover how to write an engaging essay on air pollution.

Essay on Air Pollution – Important Points to Note

Please consider adopting the following points when writing an essay on air pollution. These tips are also helpful for other essay topics as well:

• Always begin with an introductory paragraph about the topic, preferably detailing its origin.
• Unless the topic is technical, try to avoid jargons.
• Present content in bulleted points wherever possible
• Insert factual data, such as important dates, places or name wherever possible.
• Avoid writing the content in a large monotonous block of text. Remember to break up the content into digestible chunks
• Always conclude the essay with a closing paragraph.

Essay on Air Pollution – Sample 1 (200 Words)

Air pollution is a serious issue and a cause for major concern in today’s world. A report published in 2014  by the World Health Organisation states that 4.21 million individuals died prematurely in 2012 as a result of air pollution. Air pollution existed much before humans, in the form of volcanic eruptions and forest fires. However, it became much more prevalent after the Industrial Revolution.

Rapid industrial growth, unregulated emissions and a host of other issues significantly contributed to the rise in air pollution. In some cases, the severity of air pollution reached an extent where government intervention was necessary. The Great Smog of London, 1952, was an extreme case of air pollution where visibility was severely hampered. It also caused a host of illnesses and the consequent deaths of countless civilians. In November 2017, the levels of air pollution in Delhi were ten times above the safe limits. For reference, the healthy air quality index is between 0 to 50, but during that particular time period, the air quality index hit 500+. This event is now called the Great Smog of Delhi.

An air quality index of 500 and above indicates that the air is heavily polluted and will cause irreversible lung damage and a host of other illnesses to everyone who is exposed to it. Therefore, to avoid such situations in the future, relevant actions must be implemented.

Essay on Air Pollution – Sample 2 (500 Words)

Air pollution may seem like the result of anthropological activities, however, it has been around even before humans evolved. Places which are naturally arid and have minimal vegetation are prone to dust storms. When this particulate matter is added to the air, it can cause health issues in animals exposed to the dust storms.

Furthermore, active volcanoes pump extremely large amounts of toxic plumes and particulate matter into the atmosphere. Wildfires also pump large amounts of carbon monoxide into the atmosphere and hamper photosynthesis for plants. Even animals, especially ruminants such as cows contribute to global warming by producing large quantities of methane, a greenhouse gas.

However, air pollution was never a major concern until the industrial revolution. Industries grew rapidly, untreated emissions were pumped into the atmosphere, and the rise of automobiles significantly contributed to air pollution. Such activities continued without any restrictions until they started to cause a wide range of repercussions.

In humans, air polluted with contaminants can cause a wide array of illnesses ranging from asthma and bronchitis the various forms of cancer. Air pollution is not only present outdoors; interior air pollution is also a great concern. Recent research has actually found credible evidence that room fresheners have the many compounds within them, some of which are classified carcinogens. This means some of those compounds present in the aerosol has the potential to cause some forms of cancer. Other sources of air pollution can include gases such as carbon monoxide and radon.

Radon, in particular, is quite alarming. It is an odourless, colourless gas that occurs naturally. It is found in the soil as Uranium, which breaks down and eventually turns into radon gas. Radon has limited repercussions on health if exposed to low concentrations, however, when this gas gets trapped indoor, the higher levels of concentration can have wreak havoc or ultimately be lethal. Radon is also reported to be released from building materials such as granite. Exposure to radon causes no immediate health effects, but long term exposure has the potential to cause lung cancer.

Air pollution not only affects the lungs but the central nervous system too. It has been linked to a lot of diseases such as schizophrenia and autism. A study also implied that it can cause short-term memory losses or distortion of memory.

Historically, air pollution has caused many crises with the worst ever being the Bhopal Disaster in 1984. Fatalities were estimated at 3,800, with at least 600,000 injured. Next in severity was the Great Smog of 1952 which formed over London, killing an estimated 4,000 civilians over the course of four days.

Though measures have been taken to reduce the effects of air pollution, a lot of irreversible damage has been done. For instance, the effects of global warming have drastically increased; this is very apparent with the rise in sea levels and melting glaciers. If the ice caps continue to melt, then we will have to face drastic repercussions. Scientists have proposed a hypothetical scenario where the greenhouse effect becomes “uncontrolled.” Here, greenhouse gases build up and temperatures continue to rise steeply. Oceans will start to evaporate, adding more water vapour into the earth’s atmosphere. This intensifies the effect, reaching a point where temperatures are sufficiently high for rocks start sublimating. Though this scenario is hypothetical, some speculate that this phenomenon already occurred on Venus. The supporters of this theory back this up by claiming Venus has an atmosphere composed primarily of carbon dioxide. The theory also explains why Venus has an extremely high surface temperature of 462 degrees Celcius; which is in fact, the hottest planet in the solar system.

Hence, we need to reduce our impact on the planet and make a conscious effort to reduce air pollution. Explore more essay topics or other fascinating concepts by registering at BYJU’S

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Study Today

Largest Compilation of Structured Essays and Exams

Essay on Importance of Air

January 2, 2018 by Study Mentor Leave a Comment

Air is one of the primary necessities for supporting life on earth. Air, water and soil are the primary needs for sustaining life. Try holding your breath for a few seconds. You can do that for a maximum of twenty- twenty five seconds or maximum of thirty seconds.

Beyond that it is impossible for a human to hold his breath. Then suddenly a pain of breathlessness grasps over the entire body. Our body chokes. It leaps out to grab air. We behave just like a fish out of water. This will be the condition if there is no air on earth. We can survive for a few second maximum.  

Not only breathing. Air helps us to hear sounds. Without air sound cannot travel. It needs a medium to travel. Without air the earth would be a soundless place. Air is made up of many components. It contains different gases, solid particles and also water vapour.

The mixture of different gases comes to different use. Dirt and suspended particulate matter form the solid part and water vapour form the liquid part.  

Table of Contents

The composition of air is divided into the following 

• 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 gets so hot that it glows, producing light. The filament needs to be protected from oxygen in the air, so it is inside the bulb, and the air in the bulb is either removed (a vacuum) or more often, replaced with a gas that doesn’t affect anything, like neon or  argon .  
• Automatic tooth brush-  automatic tooth brushes use a jet of air and water to draw out the food particles sticking to the teeth.  
• Vacuum  cleaner –  vacuum cleaner use the negative effect of air. It creates vacuum by sucking out the air. And in this process it cleans the dirt sticking to the surface.  
• Electrical Fan –  just like windmills electrical fan utilize the velocity of their blades to cut through air and produce calm and pleasing winds, the blades rotate and produce a whirlwind.  
• Cooking oven –  the gas that burns on the end of cooking ovens need air to keep burning. It needs a continuous supply of oxygen for its combustion and producing adequate heat to felicitate cooking,   
• Deodorant spray cans –  deodorant spray cans are filled was earlier used to be filled with CFC gas. Now they are filled with environment friendly gar at a high pressure. When the nozzle is pressed the gas comes out along with some perfume.  
• R efrigerators –  refrigerators cool the air inside them to preserve the food inside. It lowers the temperature of the air inside the refrigerator with the help of some temperature absorbing agents and the air temperature drops inside thus preserving the foods.  

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• Air Composition Properties

Composition of Air

The world we reside in is covered with air, called the atmosphere. Our atmosphere is composed of several gases. The gases it contains are:

Carbon Dioxide

Helium 

Ozone, etc.

The most important gases are Oxygen, Nitrogen, and Carbon Dioxide. Air also contains water vapor and dust particles.

By volume, 78.084% of N 2 , 20.946% of O 2 , and 1% of trace gases together; these gases make the atmosphere. Trace gases are lesser in volume, but they are essential to us. The following diagram shows the constituents of air.

(ImagewillbeUploadedSoon)

What is the Composition of Air?

What do we take in for survival? We intake the oxygen. However,  the air we breathe doesn’t contain oxygen only; it has a composition of several gases. The characteristics of these gases are:

Nitrogen & oxygen are present in bulk in the atmosphere.

Carbon Dioxide, Helium, Ozone, Argon are present in a lesser amount.

Minute dust particles are also present in the atmosphere.

Plants require nitrogen for their survival, which they can’t take direction, so they take CO 2 from the atmosphere. 

Therefore, bacteria present in the soil and the roots of plants take N 2 and convert it into the form that is usable for plants.

Nitrogen is the plenteous gas in the atmosphere. Now, we will talk about other essential gases.

Oxygen is the second most copious gas in the air.

During photosynthesis, plants release oxygen into the atmosphere.

Humans and other living creatures take in oxygen for their survival.

Carbon dioxide is another essential gas in the atmosphere after N 2 and O 2 .

Green plants utilize carbon dioxide (CO 2 ) to prepare their food and release O 2 into the atmosphere.

Point to Ponder

The amount of carbon dioxide expelled by humans or other living beings appears to be equivalent to the amount used by the plants, thereby making an exact balance in the atmosphere. However, this statement doesn’t maintain verity, do you know why?

If We Talk About the Below-Mentioned Factors

The burning of fossil fuels

Release of carbon dioxide by living beings.

The continuous discharge/emission of carbon dioxide is producing (creating) an imbalance in the atmosphere. That’s why the above statement is wrong.

Chemical Composition of Air

 The table lists the chemical composition of air:

The gases mentioned in the table are also known as the Principal Gases of Air.

Air and Its Properties

Air has the following properties:

Air takes up volume.

Air takes up the volume of the container it is kept in.

Air has mass/weight.

Take a balloon, measure its weight. Now, fill another balloon with air and measure its weight. You will note a difference in their weights.

Air is affected by altitude/height.

The higher we go, the lower is the air pressure. Everest climbers use oxygen tanks because, at higher altitudes, the oxygen becomes thin. These tanks help climbers breathe normally. 

Air is affected by temperature.

Higher is the temperature of the air, the faster the motion of air molecules.

Air exerts pressure in all directions.

On shaking the cold-drink bottle and removing its cap, carbon dioxide comes out with pressure and spreads in all directions.

Air is compressible.

Carbon dioxide inside the cold-drink bottle comes out with pressure on removing the cap of the bottle.

The Table Below Shows the Properties of Air

Did you know.

The troposphere, the lowest layer of the Earth's atmosphere, contains three-quarters of all air. Air is a combination of gases, the majority of which are found in nature.

 Air also includes a large quantity of man-made air pollutants, including some that are dangerous to breathe and others that contribute to global warming. 

Water in all three phases (liquid, solid, and gas), as well as solid particles known as aerosols, are found in the troposphere.

FAQs on Air Composition Properties

1. Write the Chemical Properties of Carbon Dioxide?

The properties are:

It is colourless.

It is odourless at low concentrations.

It has a sharp, acidic smell at higher concentrations.

At standard temperature & pressure (STP),  the density of CO 2 is 1.98 kg/m 3 .

2. Write the Properties of Nitrogen.

The properties of N 2 are:

N 2 gas is inert, nonmetallic, odourless, and tasteless.

Its atomic number is 7, with an atomic mass of 14.0067.

The density of N₂ at 0 ⁰C is 1.251 g/liter.

Its specific gravity is 0.96737.

3. Write the uses of Air.

Uses of air are:

Air is the protective shield that protects the earth from the following impacts:

Harmful radiations like UV rays

Destruction creates celestial particles like X-rays, cosmic rays, asteroids.

Greenhouse effect: Air contains carbon dioxide that protects the earth from infrared radiation.

Causes changes in weather

Air helps to see the blue sky.

Air helps in pollination.

4. Write two Atmospheric Properties.

The two atmospheric properties lie hereunder:

1. Temperature

The temperature of the air is closely linked to the following atmospheric properties:

Molecules in the air create pressure through both their weight and movement.

5. What will the air composition be in 2021?

According to Vision Learning, the Earth's atmosphere is made up of 78 % nitrogen, 21% oxygen, 0.93 % Argon, 0.04 % carbon dioxide, and trace quantities of neon, helium, methane, krypton, ozone and hydrogen as well as water vapour. As you go through the levels of the atmosphere, the composition of the air does not change. The amount of molecules is what changes continuously. Yet the number of air molecules is decreasing.

6. Explain in detail the proportion of gases present in the air?

There are various gases present in the air, with a fixed amount of proportion. Nitrogen (N 2 ) is the most prevalent naturally occurring gas, accounting for around 78 % of air. At around 21%, oxygen (O 2 ) is the second most prevalent gas. Argon (Ar), an inert gas, is the third most prevalent gas, accounting for.93 % of the total. Carbon dioxide (CO 2 ), neon (Ne), helium (He), methane (CH 4 ), krypton (Kr), hydrogen (H 2 ), nitrous oxide (NO), xenon (Xe), ozone (O 3 ), iodine (I 2 ), carbon monoxide (CO), and ammonia (NH 3 ) are all present in tiny levels in the atmosphere.

7. What are Aerosols?

Aerosols or microscopic solid particles, such as dust, sea salt and ash from erupting volcanoes or forest fires are found in the air. The majority of these particles are tiny in size. Others are visible due to their size. Aerosols influence climate by assisting in the formation of clouds and shading the earth by dispersing or absorbing sunlight. As particulate matter spews from smokestacks and exhaust pipes, the number of aerosols in the atmosphere has risen in the previous century due to the development and widespread usage of combustion engines. Particles are also released into the air when wood and other materials are burned.

8. What is the significance of water vapours in the air?

The quantity of water in the air changes continually due to the water cycle. In locations near the tropics, the lower troposphere can contain up to 4% water vapour (H 2 O), whereas the poles have just minimal levels of water vapour. With increasing altitude, the concentration of water vapour reduces dramatically. The higher troposphere has far less water vapour than air at the surface, the stratosphere and mesosphere have almost little water vapour, and the thermosphere contains none at all.