smog, community-wide polluted air. Its composition is variable. … This type of smog has its origin in the nitrogen oxides and hydrocarbon vapours emitted by automobiles and other sources, which then undergo photochemical reactions in the lower atmosphere.

What is smog and how is it affecting the environment?

Smog is a specific type of air pollution. It is a combination of harmful pollutants (often appearing relatively low to the ground as a yellow-brown haze) that are introduced into the atmosphere by both natural and human induced processes. … Photochemical smog forms in warm, densely populated cities with many vehicles.

What is smog its harmful effects Class 8?

The carbon particles, nitrogen oxides and sulphur dioxide of smoke combine with the condensed water vapour called fog to form smog. Smog causes cough and aggravates (makes worse) asthma and other lung diseases, especially in children.

What is smog in simple words?

Smog is a type of air pollutant; the word “smog” is a combination of smoke and fog. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide. … They also get pollution from some neighbouring regions, due to the pattern of air movement in the area.

What are the effects of air pollution?

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.

What are the harmful effects of photochemical smog?

• It corrode metals, stones, rubber and painted surface.
• It causes serious health problems to senior citizens, children and people with heart and lung problems which lead to emphysema, bronchitis, asthma.

What causes smog and pollution?

How Smog is Formed? The atmospheric pollutants or gases that form smog are released in the air when fuels are burnt. When sunlight and its heat react with these gases and fine particles in the atmosphere, smog is formed. It is purely caused by air pollution.

What is smog give its harmful effects Class 9?

QuestionWhat is smog ? Give its harmful effects.SubjectBiology (more Questions)Class9thType of AnswerVideo, Text & Image

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. A noxious mixture of particulates and gases that is the result of urban air pollution. (informal) To get a smog check; to check a vehicle or have it checked for emissions.

What are the harmful effects of smog Class 9?

Smog effects are harmful to the senior citizens, children with heart and lung problems. Due to photochemical smog, pneumonia, inflammation of tissues, fatigue and premature of lungs and death. There are so many harmful effects of photochemical smog on human beings which causes diseases of lungs and heart.

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What is smog Class 9?

What is smog? Answer: The suspended particles like unburnt carbon particles and hydrocarbons mix with smoke and fog in the atmosphere, especially in the cold weather to form smog which results in a lowered visibility.

What are the 10 effects of air pollution?

• Respiratory and Heart Problems. The effects of air pollution are alarming. …
• Child Health Problems. Air pollution is detrimental to your health even before you take your first breath. …
• Global Warming. …
• Acid Rain. …
• Eutrophication. …
• Effect on Wildlife. …
• Depletion of the Ozone Layer.

What are the 5 effects of pollution?

High levels of air pollution can cause an increased risk of heart attack, wheezing, coughing, and breathing problems, and irritation of the eyes, nose, and throat. Air pollution can also cause worsening of existing heart problems, asthma, and other lung complications.

What are five effects of air pollution on humans?

Air pollution is considered as the major environmental risk factor in the incidence and progression of some diseases such as asthma, lung cancer, ventricular hypertrophy, Alzheimer’s and Parkinson’s diseases, psychological complications, autism, retinopathy, fetal growth, and low birth weight.

What is smog made of?

Smog, formed mainly above urban centres, is composed mainly of tropospheric ozone (O3); primary particulate matter such as pollen and dust; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NOx) and ammonia gas.

Which disaster is related to smog?

Great Smog of London, lethal smog that covered the city of London for five days (December 5–9) in 1952, caused by a combination of industrial pollution and high-pressure weather conditions. This combination of smoke and fog brought the city to a near standstill and resulted in thousands of deaths.

What are the causes and effects of photochemical smog?

Photochemical smog happens when nitrogen oxides and volatile organic compounds react together in the presence of sunlight as a catalyst and form ozone at lower levels. … The toxic chemicals formed in a photochemical smog can irritate nasal passages and eyes.

How is photochemical smog formed what are its effects?

Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight.

What are acid rain harmful effects?

It has been shown that acid rain has detrimental effects on trees, freshwaters and soils, destroys insects and aquatic life-forms, causes paint to peel, corrosion of steel structures such as bridges, and weathering of stone buildings and sculptures, as well as impacts on human health.

What is smog called?

Smog, or smoke fog, is a type of intense air pollution. The word “smog” was coined in the early 20th century, and is a contraction (portmanteau) of the words smoke and fog to refer to smoky fog due to its opacity, and odor.

What are the 2 types of smog?

Sulfurous smog and photochemical smog are two distinct types of smog recognised so far. Sulfurous smog, also known as London smog, develops due to high concentration of sulfur oxides in the air.

How does smog affect global warming?

The new study concludes that black carbon, the soot particles in smoke and smog, contributes about twice as much to global warming as previously estimated, even by the 2007 Intergovernmental Panel on Climate Change. … Dark particles in the air work to shade the Earth’s surface while warming the atmosphere.

What is smog Class 9 Brainly?

Brainly User. Answer: Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.

What is smog How is smog formed what are its harmful effects by Brainly?

Smog is the combination of both smoke and fog. It is formed when they both mix with each other. Harmful effects are it reduces our vision and causes respiratory diseases like Asthma, Heart attack, Damage to nervous system, Skin cancer and Stroke.

What is smog in geography?

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.

What is 12th smog?

It is a mixture of smoke, fog and sulphur dioxide. This smog acts as a reducing agent in atmospheric pollution and hence it is also known as reducing smog.

What is smog Class 11?

1 Answers. Smog is a definite air pollutant. It consist with SO2, NO2, Ozone, others pollutant which causes severe human health problems. Smog s are of two types (1) classical smog. (

What is smog class 7th?

What is smog? Smog is a kind of air pollution that is produced by the photochemical reaction of sunlight with nitrogen oxides and hydrocarbons which have been released into the atmosphere, specifically by automotive emissions.

What is smog in biology?

smog. A mixture of smoke and fog polluting the atmosphere.

What is smog Ncert?

Smog The word smog is derived from smoke and fog. This is the most common example of air pollution that occurs in many cities throughout the world. There are two types of smog: (a) Classical smog occurs in cool humid climate. It is a mixture of smoke, fog and sulphur dioxide.

What are 3 effects of pollution?

• Environment Degradation. The environment is the first casualty for the increase in pollution weather in air or water. …
• Human Health. …
• Global Warming. …
• Ozone Layer Depletion. …
• Infertile Land.