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. 2. CFCs damage the ozone layer present in the atmosphere. All these have resulted into adverse conditions for the aquatic animals residing in the Ganga. The bacteria present in the faeces of mammals are indicators of the quality of water. Examples are oil refineries, paper factories, textile and sugar mills and chemical factories. 4. Air pollution is created by cars, which release carbon dioxide. 3. (ii) Refill bottles, Reuse boxes. On the basis of your experience, compare the quality of air at the places given below: This monument is also corroding day by day. And the ozone layer is responsible for protecting us from harmful ultraviolet rays of the sun. Examples are oil refineries, paper factories, textile and sugar mills and chemical factories. Moreover, water must be boiled for drinking as it kills the germs inside the water. 7. 6. CLASS: PRIMARY 5. Q2- At an individual level, how can you help reduce air pollution? Find out how acid rain is a threat to monuments. Kanpur is one of the most populated towns in U.P. Q6- Explain circumstances leading to acid rain. Saturday 16th January 2021. A tap that drips once every second wastes a few thousand litres of water every year. 6. Key points to Prevent Water Pollution: There is reverse osmosis system present in such filters which make water pure. 3. This is a physical method of removing impurities. So we should not create wastage by reducing the uses of goods. A tap that drips once every second wastes a few thousand litres of water every year. The lesson covers the complete. k.setAttribute("data-push", "1"); 1. This is SMOG which is made up of smoke and fog. Let’s have a look at this. Fourth graders investigate air pollution. When there is lack of oxygen then it result into incomplete burning of fuel which results into production of carbon monoxide instead of carbon dioxide. (iii) Reduce the use of non biodegradable materials like things made of plastic, disposals, polythene etc. Take a plastic bottle and cut it into 2 halves at the centre. Now we will discuss the different types of pollution: 1. Sometimes untreated sewage is thrown directly into rivers. The roof allows infra red rays to enter but after reflection, they are not allowed to go back. Download NCERT Books, Video Lectures ASK DOUBTS Start Discusssion Free JEE Test Series, Get the most advanced study material and top your exams. results from water pollution. 1. 3. Q4- You are a member of the municipal body of your town. Pollution: Pollution is the introduction of harmful or poisonous substances into environment that may cause adverse effects. The acids drop down with rain water, making the rain acidic. Your email address will not be published. Pollution: Pollution is the introduction of harmful or poisonous substances into environment that may cause adverse effects. Not only this there are many other monuments which are a heritage property for India are getting spoilt because of air pollution. Gases like Sulphur and nitrogen react with the water vapour present in the environment to form sulphuric acid and nitric acid. Filtration: You have already seen how water is filtered. ... Get Lesson plans, Lesson notes, Scheme of work, Exam Questions, Test Questions for all subject for Primary school and Secondary School. Acid Rain: 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. It result forms nitric acid and sulphuric acid resulting into acid rain. CFCs are used in refrigerators, air conditioners and aerosol sprays. Gases like Sulphur and nitrogen react with the water vapour present in the environment to form sulphuric acid and nitric acid. And these are very helpful in studies. Now pour dirty water through the filter and observe the filtered water. m = checkTime(m); Q1- State the different ways in which water is contaminated? It is the wastage that we produce in our homes and communities. Make layers in it with paper napkin or a fine cloth followed by, cotton, sand and then gravel. Get Pollution of Air and Water, Science Chapter Notes, Questions & Answers, Video Lessons, Practice Test and more for CBSE Class 10 at TopperLearning. To control pollution level in the Ganga, A programme was initiated known as the Ganga Action Plan. Industries are supposed to treat the waste produced before discharging it into waters, but quite often the rules are not followed. How does acid rain affect us?Sulphur dioxide and nitrogen dioxide are the type of pollutants, which is released into the atmosphere by the burning of fossil fuels like diesel and coal. These wastages are thrown out the water bodies, rivers and make the water contaminated. The lesson covers all important questions and NCERT solutions to book questions have also been provided for convenience of the students. Here the amount of water is comparatively small and the flow of the river is very slow. As we know that our earth is surrounded by an envelope of gases which is known as the atmosphere. Pollution is anything that is in the air, soil, or water and degrades (or lowers) the quality of the environment. So, in this chapter we will study that how air and water pollution is going to damage our earth and our environment. Q. These notes really helps me a lot, thank you so much DronStudy, you have also cleared my doubts, again thanks a lot................thankyou. 2. NCERT Solutions for Class 8 Science Chapter 18 Pollution of Air and Water is provided here to aid students in understanding the concepts of the chapter in an interactive way. But due to some of our activities water is also getting polluted. 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. The addition of undesirable and unwanted material in water which makes water harmful for biotic and abiotic components is called water pollution. 2. The addition of undesirable and unwanted material in water which makes water harmful for biotic and abiotic components is called water pollution. return i; This has caused the Taj Mahal becoming pale. 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. Cleaner fuels like CNG (Compressed Natural Gas). We should not use more chlorine tablets than specified. The lesson covers the complete explanation of class 8 Chapter 18 Pollution of Air and Water. Examples are oil refineries, paper factories, textile and sugar mills and chemical factories. Each year, human beings generate millions of tons of wastes in form of garbage, refuse, or trash. Well, presence of those substances in our atmosphere which are harmful for us is known as pollution. This can lead to death also. Reusing water used for washing and for other household tasks. This is called acid rain. Carbon monoxide is produced from incomplete burning of fuels such as petrol and diesel. 1. ; describe how pollution increases water’s scarcity and limits its uses for consumers. How do industries cause pollution in the river? Pollution Management Indoor Air Pollution (Grades 4-6) Stinky Air Pollution and the Great London Smog (Grades 4-6) Noise Pollution Near Home (Grades 4-6) Preserving the Shining Sea from Ocean Pollution (Grades 4-6) Water Pollution in the Hudson River: Captain Maher's Story (Grades 7-8) For example,water used for washing vegetables may be used to water plants in the garden. A5- The composition of pure air is 78% nitrogen, 21% oxygen and 0.03% carbon dioxide. The usage of pesticides and weedicides in the field gets mixed with water bodies during rainfall. This has caused the Taj Mahal becoming pale. So, let’s see what is water pollution? Very nice and intrested to learn ...but I see the same things are in my book ...no extra information....please add extra information, Very very helpful in study and doing notes thanks my dear drone study, Physics Chemistry Mathematics Biology Plan and conduct a campaign to bring awareness to a problem of environmental pollution in … this means that it is very harmful for the human beings. 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. The vapors go in the upper atmosphere and deplete ozone layer. Laws for industrial units should be strictly implemented to stop the throwing of wastes in water. So, due to this the Ganga action plan was launched in the year 1985 but what was the aim of this plan? 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. Many problems related to respiratory system might be caused due to air pollution. When solar radiation reaches the Earth, some radiations are absorbed by the Earth and then released back to the atmosphere. var todaystime = h + ":" + m + ":" + s Pollution of Air and Water, CBSE Science Class 8 Chapter Wise Solved Q&A. These notes are short and easiy to write and learn. Large quantities of garbage, untreated sewage, dead bodies, and many other harmful things are discharged into the river. As a result, they get trapped inside the green house and growth of plants is stimulated because optimum temperature is achieved inside the green house. River Ganga is one of the ten most endangered rivers in the world. The purpose of the lesson is to allow students the opportunity to explain how weather and pollutants are related. It also spread lot of water borne diseases. as per NCERT Book used in CBSE and other Schools. Use the upper half as a funnel by putting it upside down in the lower half. While brushing your teeth, leaving the tap running may waste several litres of water. The unwanted and harmful substances which make the water impure (or contaminated) are called water pollutants.. results from water pollution. The idea of reduce, reuse and recycle should be incorporated for prevention of water pollution. These include fertilizer, detergent, leather and paint industries. Water contaminated with sewage may contain bacteria, viruses, fungi and parasites which cause diseases like cholera, typhoid and jaundice. document.write(''); So, planting more number of trees will reduce the amount of carbon dioxide responsible for Greenhouse Effect. //var today = now.getFullYear()+"-"+(month)+"-"+(day); Many industries discharge harmful chemicals into rivers and streams causing the pollution of water. Now we will study the effects of water pollution. So, what is pollution? Air Pollution - automobiles, incinerators, coal-fired power plants, and factories release carbon dioxide, sulfur oxides, and other pollutants into the air. Carbon dioxide, argon, methane, ozone, water vapour are also present in very small quantities. If such fecal contaminated water is consumed then it can cause many infections. Copyright © 2021 - 2021 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. CBSE Class 8 Science Lessons Explanation, Notes, NCERT Question Answers, ← Light Class 8 Notes, Question Answers, Explanation, Stars and the Solar System Class 8 Explanation, Notes, Examples, Question Answers →, Chapter 1 How, When and Where Class 8 History Explanation, Question Answers, Chapter 2 From Trade to Territory – The company establishes power Class 8 History, Explanation, Question Answers, Chapter 3 Ruling the Countryside Class 8 History Explanation, Question and Answers, Chapter 4 Tribals, Dikus and the Vision of a Golden Age Class 8 History Explanation, Chapter 5 When people rebel – 1857 and after Class 8 History Explanation, Chapter 6 Weavers Iron Smelters and Factory Owners Class 8 History, Explanation, Chapter 1 The Indian Constitution, Class 8 Civics Explanation, Question and Answers, Chapter 2 Understanding Secularism, Class 8 Civics Explanation, Question and Answers, Chapter 3 Why do we need a Parliament, Class 8 Civics Explanation, Question and Answers, Chapter 4 Understanding laws, Class 8 Civics Explanation, Question and Answers, Chapter 5 Judiciary Class 8 Civics Explanation, Question and Answers, Chapter 6 Understanding Our Criminal Justice System Class 8 Civics Explanation, Question and Answers, Chapter 7 Understanding Marginalization, Class 8 Civics Explanation, Question and Answers, Chapter 8 Confronting Marginalisation, Class 8 Civics Explanation, Question and Answers, Chapter 9 Public Facilities, Class 8 Civics Explanation, Question and Answers, Chapter 10 Law and Social Justice, Class 8 Civics Explanation, Question and Answers, Chapter 1 Resources, Class 8 Geography lesson Explanation, Question and Answers, Chapter 2 Land, Soil, Water, Natural Vegetation and Wildlife Resources, Class 8 Geography Lesson Explanation, Question and Answers, Chapter 3 Mineral and Power Resources, Class 8 Geography lesson Explanation, Question and Answers, Chapter 4 Agriculture, Class 8 Geography lesson Explanation, Question and Answers, Chapter 5 Industries, Class 8 Geography lesson Explanation, Question and Answers, Chapter 6 Human Resources, Class 8 Geography lesson Explanation, Question and Answers, Chapter 1 Crop Production and Management Class 8 CBSE Science Notes, Question Answers, Chapter 2 Microorganisms Class 8 Notes, Question Answers, Chapter 3 Synthetic fibres and Plastics Class 8 Notes, Question Answers, Chapter 4 Metals and Non Metals Class 8 Notes, Question Answers, Chapter 5 Coal and Petroleum Class 8 Notes, Question Answers, Chapter 6 Combustion and Flame Class 8 Notes, Question Answers, Chapter 7 Conservation of plants and animals Class 8 Notes, Question Answers, Chapter 8 Cell Structure and Function Class 8 Notes, Question Answers, Chapter 9 Reproduction Class 8 Notes, Question Answers, Explanation, Chapter 10 Reaching the age of adolescence Class 8 Notes, Question Answers, Explanation, Chapter 11 Force and Pressure Class 8 Notes, Question Answers, Explanation, Chapter 12 Friction Class 8 Notes, Question Answers, Explanation, Chapter 13 Sound Class 8 Notes, Question Answers, Explanation, Chapter 14 Chemical Effects of Electric Current Class 8 Notes, Question Answers, Explanation, Chapter 15 Some Natural Phenomena Class 8 Notes, Question Answers, Explanation, Chapter 16 Light Class 8 Notes, Question Answers, Explanation, Chapter 17 Stars and the Solar System Class 8 Explanation, Notes, Examples, Question Answers, Chapter 18 Pollution of Air and Water Class 8 Explanation, Notes, Examples, Question Answers, Chapter 1 Dhwani Class 8 Summary, Explanation, Question Answers, Chapter 2 Lakh Ki Chudiyan Class 8 Summary, Explanation, Question Answers, Difficult Words, Chapter 3 Bus Ki Yatra Class 8 Summary, Explanation, Question Answers, Chapter 4 Deewano ki Hasti Class 8 Summary, Explanation, Question Answers, Chapter 5 Chitthiyon Ki Anoothi Duniya Class 8 Summary, Explanation, Question Answers, Chapter 6 Bhagwan Ke Dakiye Class 8 Summary, Explanation, Question Answers, Chapter 7 Kya Nirash Hua Jaye Class 8 Summary, Explanation, Question Answers, Chapter 8 Yeh Sabse Kathin Samay Nahi Class 8 Summary, Explanation, Question Answers, Chapter 9 Kabir Ki Saakhiyaan Class 8 Summary, Explanation, Question Answers, Chapter 10 Kamchor Class 8 Summary, Explanation, Question Answers, Chapter 11 Jab Cinema Ne Bolna Sikha Class 8 Summary, Explanation, Question Answers, Chapter 12 Sudama Charit Class 8 Summary, Explanation, Question Answers, Chapter 13 Jahan Pahiya hai Class 8 Summary, Explanation, Question Answers, Chapter 14 Akbari Lota Class 8 Summary, Explanation, Question Answers, Chapter 15 Surdas ke Pad Class 8 Summary, Explanation, Question Answers, Chapter 16 Pani ki Kahani Class 8 Summary, Explanation, Question Answers, Chapter 17 Baaz aur Saanp Class 8 Summary, Explanation, Question Answers, Chapter 18 Topi Class 8 CBSE Hindi Lesson, Summary, Explanation, Question Answers, Entrance Exams for Arts students after Graduation, List of Entrance Exams conducted by IGNOU. This product is available in the BUNDLED FORMAT w Ans. 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. } Let’s study the case of Taj Mahal. After this lesson, students will be able to: 1. define key terms related to water pollution 2. explain the different types of water pollution 3. demonstrate understanding of how water pollution impacts humans (iv) Use empty jars into containers for leftover food. 2. The things which are responsible for contamination of air are called air pollutants. Bacteria present in the faeces of mammals indicate the quality of water. Along with other gases, CO, Because of human activities the amount of CO. 1. We must be cautious. 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. There are no microorganism present in this water. (pollution, environment, littering) 10 min: Show illustrations of different kinds of pollution; land, water, and air. It leads to monument cancer, as it combines with marble damaging the calcium carbonate and deteriorates it. So we should reduce the water uses for brushing teeth. The chemicals released include arsenic, lead and fluorides which lead to toxicity in plants and animals. CFCs damage the ozone layer of the atmosphere. 3. Effect of Global Warming: Q11- Why does the increased level of nutrients in the water affect the survival of aquatic organisms? Natural resources like solar energy, tidal energy, etc. Explain Ganga Action Plan. It has also helped me in my exams to revise chapter easily and I was able to score god marks in my exams. Our notes of Chapter 18 Pollution of air and water are prepared by Maths experts in an easy to remember format, covering all syllabus of CBSE, KVPY, … Such particles are also produced during industrial processes like steel making and mining. 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. Potable Water: The water which is convenient for consumption is known as potable water. Teaching Kids About Pollution, Air, Land, & Water Pollution Activities, Pollution Printables for Kids and Earth Day Activities, Over 120+ Earth Day Ideas, Awesome Ways to Teach Kids About Pollution, and Pollution Activities for Kids, Pollution Projects for Kids, Earth Day Theme for Preschool and Kindergarten, Ways to help protect the Earth Very nice and understandable...but I see the same information that is given in my book.. please add extra information.. They also throw garbage, flowers, idols of gods and goddesses and non biodegradable polythene bags into the river. Discuss the displayed pictures of water, air, and land pollution. This website is very helpful to me. 4. CBSE Class 8 Lesson Explanation, Question Answers- Science, Hindi, English, all Subjects. Trees take up carbon dioxide and release oxygen. Industries must treat the waste before discharging them into waters. In this lesson, students learn words and phrases to talk about pollution. Automobiles which burn diesel and petrol also produce tiny particles which remain suspended in air for long periods. discharged by various industries have lead to many bad effects like impure water, acidity changes in water, etc. We should realise our responsibility and start using environment-friendly processes for survival of our planet is in danger. A serious problem which is faced by this holy river is that it has become a much polluted river. These particles are also called SPM (Suspended Particulate Matter). With the growth of more and more algae a new problem will arise that is the oxygen in the water level will reduce result into death of aquatic animals. A lot of oxygen is utilized in this process, consequently leading to a decrease in the level of oxygen dissolved in the water body. 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. Find air and water pollution lesson plans and teaching resources. Ganga Action Plan is a massive multi crore project implemented in 1985 which has undertaken to make the river Ganga pollution free. Out of these, only infra red rays and visible light reaches earth’s surface. Indeed, this water seeps into ground and has polluted ground water too. During the tests it was found that the number of coli form has increased a lot showing the high pollution level of the river. It is a poisonous gas. All rights Reserved. 1. if (i < 10) { It occurs when there is increased concentration of greenhouse gases. These are good notes, but pls add more of gases like sox and nox, cfc's, etc. Proper sewage treatment plan must be implemented. Make a list of measures that would help your town to ensure the supply of clean water to all its residents? It can be air, water, land, or noise pollution. As these gases are lighter they rise up in the sky. The harmful chemicals like arsenic, lead, etc. So, now the rain water no longer remains a pure water it turns into acidic water. There are many more disadvantages. Q10- Describe the threat to the beauty of the Taj Mahal? The reflected ones when pass through earth’s atmosphere, get trapped inside the gas molecules. We can also construct the  a water filter with simple, everyday materials. } Many industries discharge harmful chemicals into rivers and streams, causing the pollution of water such as eutrophication which we have already discussed. (iii) Reuse the cotton or jute bag instead of polythene carry bag. The learner will: define potable water as water that is suitable for drinking and explain that it is a limited natural resource. Your No1 source for Latest Entrance Exams, Admission info, March 14, 2019 by SuccessCDs Team in CBSE Class 8 Science Lessons Explanation, Notes, NCERT Question Answers. If such water is used by us, it can cause various infections. document.write(''); Pollution is the introduction of harmful or poisonous substances into environment that may cause adverse effects. Lesson Activities: (45 min. Water used for washing vegetables may be used to water plants in the garden. This means it is harmful for those buildings made up of marble as it was discussed in the case study of the Taj mahal. 3 R's for Prevention of Water pollution: Learn about pollution of air and water and know how to prevent pollution. Therefore, the overall temperature of earth’s surface rises. Use of water system or pit latrine instead of defecating on a bare ground. Registration; Login; ... Class 8 Science Solved Q&A. River Ganga is one of the ten most endangered rivers in the world. As you all know that water is very important because it is used for various purposes such as drinking, bathing, washing etc. Chemical process like chlorination can be used for treating water. It is suffering with the monument cancer and the main reason behind this corrosion is air pollution. These pollutants react with the water vapours present in the atmosphere  to form nitric acid and sulphuric acid respectively. } Kanpur has more than 5000 industries. On reaching earth, the infra red rays are reflected back and a portion of it is absorbed by earth’s surface. This phenomenon is also known as building cancer. Class 9 - Science+Maths Video Paper Solutions, Class 10 - Science+Maths Video Paper Solutions, 11+12 - Physics + Chemistry + Mathematics, 11+12 - Physics + Chemistry + Mathematics (IIT), 11+12 - Physics + Chemistry + Biology (NEET), Class 9th and 10th : Foundation for IIT Physics, Class 9th and 10th : Foundation for IIT Chemistry, How to make the best choice: Science vs Commerce vs Arts, How to Study Effectively- 9 Secrets No One Tells, How to prepare for IIT-JEE this summer - Top 7 proven ways. A2- The following are the steps taken for reduction of air pollution: Q3- Clear, transparent water is always fit for drinking. Join using code ... Class 8 Science Pollution of Air and Water Activity overview: This is the video of Class 8 Science Pollution of Air and Water. 2. Make layers in it with paper napkin or a fine cloth followed by, cotton, sand and then gravel. It may have some kind of impurities present in it in the form of micro organism. Activities include vocabulary exercises on types, causes, effects and ways to prevent pollution. emit chlorofluorocarbons (CFCs). The lesson covers the complete explanation of class 8 … Greenhouse gases present into the atmosphere trap these radiations and do not allow the heat to leave. water (if you are using paint) Instructions for Instructor: 1. Its harmful effects are as follows: Q8- Describe the ‘Green House Effect’ in your own words? 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. We should use CNG; instead of petrol and diesel in automobiles. The towns and cities, through which the river flows, throw large quantities of garbage, untreated sewage, dead bodies, and many other harmful things, directly into the river. Maintaining the source of water to keep it clean and pollution free. 4. A10- Acid rain is the major threat to the beauty of the Taj Mahal. The following are the steps taken for reduction of air pollution: We should use public transport as much as possible. In Hawai‘i, volcanic activity also contributes to air pollution, which sometimes reduces the visibility over the islands, causing a smog-like condition called It contains food wastes, detergents, microorganisms, etc. Carbon dioxide, argon, methane, ozone and water vapor are also present in very small quantities.

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