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((w.adpushup = w.adpushup || {}).control = (w.adpushup.control || [])).push(k); These particles are also called SPM (Suspended Particulate Matter). These gases do not allow the gases to release back by the earth which result into trapping of the gases which in return causes increase in the temperature of earth’s surface. The idea of reduce, reuse and recycle should be incorporated for prevention of water pollution. So, now we will discuss about the various types of causes of air pollution. By volume, about 78% of this mixture has nitrogen gas and about 21% is oxygen. To control pollution level in the Ganga, A programme was initiated known as the Ganga Action Plan. Pollution is anything that is in the air, soil, or water and degrades (or lowers) the quality of the environment. Copyright © 2021 - 2021 Acid rain can be harmful for living beings and also for non-living things. 2. Recycle: Recycling prevents the generation of many greenhouse gases and water pollutants, and saves energy. So, now we will study what acid rain is? The following are the steps taken for reduction of air pollution: We should use public transport as much as possible. Effects of Air Pollution: The roof allows infra red rays to enter but after reflection, they are not allowed to go back. Effect of Global Warming: document.write(''); It is suffering with the monument cancer and the main reason behind this corrosion is air pollution. 1. Learn about pollution of air and water and know how to prevent pollution. Example includes washing of clothes, industrial waste from factories, etc. 1. Many problems related to respiratory system might be caused due to air pollution. We should properly dispose the garbage and not burn it. The major pollutants which cause water pollution are : Sewage, Fertilisers, Pesticides and Industrial wastes. Air Pollution: It is the contamination of air, which takes place due to unwanted substances which causes harmful effects on both biotic and abiotic components. Cleaner fuels like CNG (Compressed Natural Gas). It leads to monument cancer, as it combines with marble damaging the calcium carbonate and deteriorates it. var month = ("0" + (now.getMonth() + 1)).slice(-2); emit chlorofluorocarbons (CFCs). Plan and conduct a campaign to bring awareness to a problem of environmental pollution in … As shown in the image the waste bottles, wrappers which are thrown into the water causes water pollution due to this the water becomes unfit for drinking. A10- Acid rain is the major threat to the beauty of the Taj Mahal. Get Pollution of Air and Water, Science Chapter Notes, Questions & Answers, Video Lessons, Practice Test and more for CBSE Class 10 at TopperLearning. Q11- Why does the increased level of nutrients in the water affect the survival of aquatic organisms? why humans do not see that environment is polluted, this topic is very good and helpfull in study. The soil is also affected by impure water, causing changes in acidity, growth of worms, etc. Now pour dirty water through the filter and observe the filtered water. as per NCERT Book used in CBSE and other Schools. A tap that drips once every second wastes a few thousand litres of water every year. This is very very helpful for my school project work, I liked it very much.Iam satisfy with this, This notes is very useful to me thank you, Thanks for these notes. These industrial units discharge toxic chemical wastes into the river. Such particles are also produced during industrial processes like steel making and mining. Acid Rain: 3. Greenhouse gases present into the atmosphere trap these radiations and do not allow the heat to leave. Now, the Government of India has launched a new initiative known as National Mission for Clean Ganga (NMCG) in 2016. It is the one of the major causes of monument cancer. Pollution (Grades 6-8) During this lesson, students will clarify their understanding of weather and pollution through Internet research. Topics covered in this video are as follows- Here is a demo of online video lecture. This is called global warming. NAME OF TEACHER: DATE: ... CONTROL OF AIR POLLUTION. This in turn causes fishes and aquatic organisms to die. Topics covered are Composition of Air,  Air Pollution, SMOG, CFC- Chloro Fluoro Carbon, Carbon Monoxide, Unburned Particles, Case study – Taj Mahal, Acid Rain, Global warming, Green house effect, Steps to reduce air pollution, Water, Water pollutants, Harmful effects of Water pollution, Case Study – Ganga river, Ganga Action Plan, Potable water, Ways to make water fit for drinking, NCERT Book solutions. So, the main aim was to reduce the pollution level of Ganga to make it a clean river. 6. 1. Natural resources like solar energy, tidal energy, etc. Many industries discharge harmful chemicals into rivers and streams causing the pollution of water. Please contact us if you have any questions or would like to check out relevant equipment. We should use CNG; instead of petrol and diesel in automobiles. But due to some of our activities water is also getting polluted. We should realise our responsibility and start using environment-friendly processes for survival of our planet is in danger. As these gases are lighter they rise up in the sky. . Example includes washing of clothes, industrial waste from factories, etc. These notes really helps me a lot, thank you so much DronStudy, you have also cleared my doubts, again thanks a lot................thankyou. It reduces the oxygen-carrying capacity of the blood. 4. This means it is harmful for those buildings made up of marble as it was discussed in the case study of the Taj mahal. Along with other gases, CO, Because of human activities the amount of CO. 1. So helpful to know what air pollution and everything. Large quantities of garbage, untreated sewage, dead bodies, and many other harmful things are discharged into the river. By precipitation, these acid come down and forms the acid rain. So we should reduce the water uses for brushing teeth. Now we will take up with a case study of Ganga River. All rights Reserved. (ii) Purchasing durable, long-lasting goods. CBSE Class 8 Science Notes Chapter 18 Pollution of Air and Water Air consists of a mixture of gases. var m = now.getMinutes(); By volume, about 78% of this mixture is nitrogen and about 21% is oxygen. Q1- State the different ways in which water is contaminated? Background - Pollution is any contamination of air, water, or land that affects the balance of the environment. It is done by adding chlorine tablets or bleaching powder to the water. Required fields are marked *, About | Privacy Policy | Disclaimer | Sitemap. 3. discharged by various industries have lead to many bad effects like impure water, acidity changes in water, etc. They reduce visibility. 3. And these are very helpful in studies. 5. (i) Materials made of plastic, paper, glass and metal should be recycled to make new items. 2. So we should reduce the water uses for brushing teeth. Pollutant Posters (Grades 6-8) Various physical and chemical method in the sewage treatment plants and municipal bodies help to clean water before discharging it into water bodies and house holds. Maintaining the source of water to keep it clean and pollution free. A2- The following are the steps taken for reduction of air pollution: Q3- Clear, transparent water is always fit for drinking. The things which pollute the water are known as water pollutants. It occurs when there is increased concentration of greenhouse gases. if this balance or composition gets changed due to the human activities it becomes a polluted air because the gases such as sulphur dioxide and carbon monoxide get added into this leading to the pollution of air. Examples are oil refineries, paper factories, textile and sugar mills and chemical factories. This is called acid rain. Sometimes untreated sewage is thrown directly into rivers. Location of factories and industries must be in remote areas to avoid problems resulting from air pollution. This can lead to death also. 5. results from water pollution. And this phenomenon is called “Marble cancer”. But what are they? These pollutants may result from natural causes like smoke or dust from forest fires or volcanic eruptions and from man-made causes like burning of fuels, smoke from factories etc. } A lot of oxygen is utilized in this process, consequently leading to a decrease in the level of oxygen dissolved in the water body. 5 min: Review vocabulary terms dealing with the lesson. Discuss the displayed pictures of water, air, and land pollution. Download Lesson Plan . The usage of pesticides and weedicides in the field gets mixed with water bodies during rainfall. Filtration: You have already seen how water is filtered. This monument is also corroding day by day. This process is known as eutrophication. So, now we know that there are various types of pollutants present in the environment and they are very harmful for us. The worksheet finishes with a … Students investigate the pollutants on the wooden block. Just like acid rain one more issue of concern is global warming. Acid rain can be harmful for living beings and also for non-living things. the issues of Pollution. The addition of undesirable and unwanted material in water which makes water harmful for biotic and abiotic components is called water pollution. So, what are the harmful effects of the acid rain? How is Water Purified ? This simple fact tells us how air is very important for us. So, when river flows from this area, it has been noticed that it is the place where the river is affected so badly because people here are continuously dumping various things into the river which lead to the pollution in the river. Water which is suitable for drinking is called potable water. 5. Effects of Water Pollution: Very nice and understandable...but I see the same information that is given in my book.. please add extra information.. Pollution of Air and Water, CBSE Science Class 8 Chapter Wise Solved Q&A. It is the increase in the concentration of certain gases like carbon dioxide, methane, etc in air due to which infra red rays get trapped in it and it leads to increase in overall temperature of earth. Each of us can make a difference by reducing, reusing, and recycling materials at home and throughout our communities and encouraging our neighbours to do the same. } 3. The chemicals released include arsenic, lead and fluorides which lead to toxicity in plants and animals. Whenever harmful substances such as sewage, toxic chemicals, silt, etc., get mixed with water, the water becomes polluted. Chlorination: Chlorination is a commonly used chemical method for purifying water. The reflected ones when pass through earth’s atmosphere, get trapped inside the gas molecules. 2. 1. Topics covered are Composition of Air,  Air Pollution, SMOG, CFC- Chloro Fluoro Carbon, Carbon Monoxide, Unburned Particles, Case study – Taj Mahal, Acid Rain, Global warming, Green house effect, Steps to reduce air pollution, Water, Water pollutants, Harmful effects of Water pollution, Case Study – Ganga river, Ganga Action Plan, Potable water, Ways to make water fit for drinking, NCERT Book solutions. Gases like Sulphur and nitrogen react with the water vapour present in the environment to form sulphuric acid and nitric acid. The addition of undesirable and unwanted material in water which makes water harmful for biotic and abiotic components is called water pollution. Ans. Pollution of Air and Water Class 8 Science Chapter 18 as per NCERT Book used in CBSE and other Schools. This product is available in the BUNDLED FORMAT w water (if you are using paint) Instructions for Instructor: 1. 3 R's for Prevention of Water pollution: A8- The overall increase in the temperature of the Earth is known as the Greenhouse effect. 4. How do industries cause pollution in the river? Begin the activities by displaying and reviewing the lesson vocabulary (pollution, surroundings, litter, and environment). When air is contaminated by unwanted substances which have a harmful effect on both the living and the non-living, it is referred to as air pollution. In this lesson, students learn words and phrases to talk about pollution. Out of these, only infra red rays and visible light reaches earth’s surface. Now we will discuss  the different types of pollution: 1. Global warming can cause sea levels to rise dramatically. These industries cause chemical contamination of water. For example,water used for washing vegetables may be used to water plants in the garden. So, let’s see what is global warming. Indeed, this water seeps into ground and has polluted ground water too. Boiling kills the germs present in the water. The information in this lesson is reinforced with visuals, including photographs of places with bad air pollution, and students are asked to redraw scenes without the air pollution in order to get them to think more about its effects on the environment. When rain water mixes with pollutants present in air. Apart from this there are some more gases present such as ozone, argon, methane etc. Various diseases like cholera, diarrhea, jaundice, etc. It affects aquatic life too. Carbon monoxide is produced from incomplete burning of fuels such as petrol and diesel. The Ganga at Kanpur in Uttar Pradesh (U.P.). Key points to Prevent Water Pollution: The SMOG causes breathing difficulties such as asthma, cough and wheezing in children. You have to deliver the speech in your class? Location of factories and industries must be in remote areas to avoid problems resulting from air pollution. Water treatment plants should be installed in all industrial areas. If such fecal contaminated water is consumed then it can cause many infections. The learner will: define potable water as water that is suitable for drinking and explain that it is a limited natural resource. The bacteria present in the faeces of mammals are indicators of the quality of water. When acid rain falls on it, this result into a reaction between the acidic water and marble resulting into the deterioration of the building. Industries are supposed to treat the waste produced before discharging it into waters, but quite often the rules are not followed. 5. Automobiles which burn diesel and petrol also produce tiny particles which remain suspended in air for long periods. 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