Water pollution is categorized by where it originates or its source. Water pollution is the contamination of water bodies by directly or indirectly discharging chemicals, pollutants and wastes without adequate treatment. Water pollution read earth science ck12 foundation. Waterpollution is the contamination of water by those substances which are harmful to life. Causes of water pollution factors that contribute to water pollution can be categorized into two different groups point sources nonpoint sources point sources are the easiest to identify and control non point sources are ambiguously defined and harder to control. Jan 19, 2016 lecture notes environmental pollution causes, effects and control of air edurev notes notes for class 9 is made by best teachers who have written some of the best books of class 9.
Describes the sources of water pollution, such as municipal, industrial, and agricultural. Water is essential for the existence of all life forms. The effects of pollution on human beings and aquatic communities are many and varied. Types and sources of water pollution there are several major types of water pollution. Pollution of air and water class 8 notes class 8 science. Water pollution is any change, minor or major in the physical, chemical or biological properties of water that eventually leads to a detrimental consequence of any living organism. It is the contamination of air, which takes place due to unwanted substances which causes harmful effects on both biotic and abiotic components. Environmental pollution and control notes, guidelines and. Cbse class 8 science, pollution of air and water study notes. The major causes of water pollution include sewage and other oxygendemanding wastes, urbanization, agrochemical wastes, thermal pollution. The menace of water pollution can be tackled only by forming a multipronged strategy. Water pollution causes approximately 14,000 deaths per day, mostly due to.
Petroleum products, such as oil and gasoline, enter the water from ships and marine terminals, offshore oil rigs, runoff from parking lots, factories, oil dumping, and other sources. Essay on water pollution for students and children 500. If the liquid pollutants are added slowly enough, kids will be able to observe the reaction of the oil when the dish soap is added to the cup, in that the oil will bind with the food coloring and then the dish soap acts as a surfactant breaking the bonds of. Water pollution notes environmental chemistry optional module 1 of water, which is generally called the fresh water pollution. Water pollution is the deterioration of the quality of water due to addition of foreign substances inorganic, organic, biological, and radiological, factors heat and deprivation that makes it health hazard, unfit for human use and aquatic organisms. Water pollution, the release of substances such as chemicals or microorganisms and energy in the form of radioactivity or heat into surface and subsurface waters to the point where they interfere with beneficial use of the water or with the natural functioning of ecosystems. Water pollution is a global issue that needs the evaluation and careful scrutiny of all the water resources and it is suggested that the water pollution is the major reason of deaths and diseases in the world. Effects of water pollution water pollution has a duel effect on nature. Complete details for preparing environmental pollution and control prepared by arul jayan sir note 1. It has negative effects on the living and also on the environment.
The water pollution accounts for the death of nearly 14,000 people per day and in this. In addition, specific ions, such as chloride, sodium, boron and others may have a toxic effect on plants at certain levels. Lecture notes environmental pollution causes, effects and control of air edurev notes notes for class 9 is made by best teachers who have written some of the best books of class 9. People have to be trained and taught the that certain activities can not be allowed near water bodies and certain lifestyle changes are needed to be incorporated to arrest such form of pollution. Jan 29, 2019 pollution of air and water class 8 notes science in pdf are available for free download in mycbseguide mobile app. Olaniran 1995 defined water pollution to be the presence of excessive amounts of a hazard pollutants in water in such a way that it is no long. The things which are responsible for contamination. Class 8 chemistry chapter air and water pollution cbse and ncert study help. Pollution is of different kinds depending on the nature of pollutants and. Pdf global water pollution and human health researchgate. Water bodies include for example lakes, rivers, oceans, aquifers and groundwater.
Study material and notes of ch 18 pollution of air and water class 8th science. Nonpoint source pollution is caused by rainfall moving over. Pollution of air and water class 8 notes science in pdf are available for free download in mycbseguide mobile app. In view of the coronavirus pandemic, we are making live classes and video classes completely free to prevent interruption in studies. We hope the given cbse class 8 science notes chapter 18 pollution of air and water pdf free download will help you. This helps you give your presentation on water pollution in a conference, a school lecture, a business proposal, in a webinar and business and professional representations. Without it, neither we, nor any life as we know it, would exist.
The preservation of our water environment, which is embedded in sustainable. Topics covered are composition of air, air pollution. For example, releasing inadequately treated wastewater into natural water bodies can lead to degradation of aquatic. This water pollution worksheet was designed so that students can grasp the concept of water pollution without writing down notes that can take a long time. Consequences of air pollution co 2 is a good transmitter of sunlight, but it also partially restricts infrared radiation going back from the earth into space, which produces the socalled greenhouse effect that prevents a drastic. Water pollution is the contamination of water bodies like oceans, seas, lakes, rivers, aquifers, and groundwater usually caused due to human activities. Environmental pollution can be defined as a change that is not wished or desired in the chemical, physical, or biological characteristics of any component of the environment air, water, and soil which can cause harmful effects on various or many forms of life. Water pollution is the contamination of water by those substances which are harmful to life.
Kids should easily be able to remove the littertrash and soil pollution with the screen and paper towels. This helps you give your presentation on water pollution in a conference, a school lecture, a business proposal, in a webinar and business and professional representations the uploader spent hisher valuable time to create this. Water pollution is caused by foreign objects and chemicals entering the aquatic ecosystem or when natural chemicals build up in excess amounts. Now we will discuss the different types of pollution. Water pollution water pollution can be defined as presence of solid, liquid or gaseous contaminants in such concentration that may alter the quality of water.
Water resources and pollution student notes outline. The accidental creation of the salton sea in southern california is used as an example of how water is needed, how it has been manipulated, and some of the unforseen consequences of how. Pollution is the introduction of harmful or poisonous substances into environment that may cause adverse effects. Notes of ch 18 pollution of air and water class 8th science. Any change or modification in the physical, chemical and biological properties of water that will have a detrimental consequence on living things is water pollution.
Ppt water pollution powerpoint presentation free to. Because we have given more than 30 ppt in one place. Pollution of air and water class 8 science chapter 18 explanation, notes, question answers. The stress on our water environment as a result of increased industrialization, which aids urbanization, is becoming very high thus reducing the availability of clean water.
Pollution of air and water class 8 science chapter 18 as per ncert book used in cbse and other schools. Point source harmful substances are emitted into any body of water. The best app for cbse students now provides pollution of air and water class 8 notes science latest chapter wise notes for quick preparation of cbse exams and schoolbased annual examinations. Lecture notes environmental pollution causes, effects and. Download pollution of air and water class 8 notes here. Jan 20, 2015 water pollution is the second most imperative environmental concern along with air pollution. A free powerpoint ppt presentation displayed as a flash slide show on id. Pollution of air and water class 8 notes science chapter 18. Cbse class 8 science chapter 18 pollution of air and water class 8 revision notes pdf download is available here. Taking efficient notes can be a big challenge for many students, especially when working from a powerpoint lecture. Two types of water pollution are point nonpoint sources. Water pollution is the second most imperative environmental concern along with air pollution. One of the most destructive types is petroleum pollution. Mar 14, 2019 pollution of air and water class 8 science chapter 18 explanation, notes, question answers.
Point source pollution is discharged from a single, identifiable source such as pipes, factories, or ships. Pdf study material on air pollution for graduate students. Marine pollution and nutrient pollution are subsets of water pollution. Water pollution results when contaminants are introduced into the natural environment. Sources of water pollution are either point sources or nonpoint sources. Topics covered are composition of air, air pollution, smog, cfc. By uploading your article you indicate that you have read and agree to the terms of service and. The pollution from the aircraft is also an importan t component of the total air pollution problem in the world.
Biotoilets, bioremediation next post water pollution water pollution is the additionpresence of undesirable substances toin water such as organic, inorganic, biological, radiological, heat, which degrades the quality of water so that it becomes unfit for use. Nov 29, 2016 water pollution water pollution can be defined as presence of solid, liquid or gaseous contaminants in such concentration that may alter the quality of water. Acids are byproducts of industrial processes such as leather tanning, metal smelting and plating, petroleum distillation, and organic chemical synthesis coal mining is an especially important source of acid water pollution because of the sulfur compounds in coal react with oxygen and water to make sulfuric acid. Information about the types, causes, and effects of water pollution and what we can do to solve the problem.
The summaries were developed for nontechnical audiences to explain clearly what. Water pollution control a guide to the use of water. Agricultural sources, thermal pollution discharge of hot water by thermal power plants cause deficiency of dissolved oxygen in water and underground water pollution. This document includes summaries of 34 general reporting categories used for epa attains data on polluted waters. The water pollution accounts for the death of nearly 14,000 people per day and in this issue, if we talk about india then it is.
The major causes of water pollution include sewage and other oxygendemanding wastes, urbanization, agrochemical wastes, thermal pollution, industrial wastes, nutrient enrichment, acid rain. Click the download links to open the attachments page. Irrigation water management more difficult for plants to uptake water. The preservation of our water environment, which is embedded in sustainable development, must be well.
Powerpoint is the worlds most popular presentation software which can let you create professional water pollution powerpoint presentation easily and in no time. Water pollution is defined as the addition to water of an excess material or heat that is harmful to the living organism or which impairs the beneficial use of water. Water pollution is the contamination of water bodies such as lakes, rivers and oceans. Aug 14, 2014 complete details for preparing environmental pollution and control prepared by arul jayan sir note 1.
The water prevention and control of pollution act, 1974. Free download water pollution powerpoint presentation slides. Pollution is of different kinds depending on the nature of pollutants and pollutions. Cbse class 8 science, pollution of air and water study. Owa department of integrated science, federal college of education, okene, kogi state, nigeria phone. In this chapter, we will study about the harmful changes taking place in our surroundings and their effects on our lives. Water pollution lecture powerpoint the first part of this lecture delves into the importance of water, its role in climate, and its distribution around earth. Lecture notes environmental pollution causes, effects. It occurs when when pollutants eg chemicals, oils etc are added to the water bodies without suitable treatment to take away the harmful substances. Pollution of air and water class 8 notes science chapter. Powerpoint slide on water pollution compiled by vibaava academy.
Water pollution is any change in the physical, chemical or biological properties of water that will have a detrimental consequence of any living organism. Water pollution the addition of harmful substances to water, as a result of which its physical, chemical, and. Water pollution is the contamination of water bodies, usually as a result of human activities. Serious water pollution incidents 20012016 statista. Ppt the water prevention and control of pollution act. Effects, prevention, and climatic impact intechopen. Odum defined pollution as, undesirable change in physical, chemical and biological properties of air, water, and soil, which directly or indirectly affect human beings the basic cause of pollution is an everincreasing rise in the human population that is putting an equally increasing demand for more food, water supply, roads, transportation, dwelling units. The page numbers mentioned below are as per revised second edition of environmental pollution control engineering by c. It is the contaminants of air by the discharge of detrimental substances. This outline gives students a means to take notes that guides them toward important concepts and avoids the pitfalls of writing wordforword or simply not taking notes at all. Introduction the act aims to prevent and control water pollution and to maintainrestore wholesomeness of water by establishing central and state pollution control board to monitor and enforce the regulations. Water which is purified and fit for drinking is known as potable water. This helps you give your presentation on water pollution in a conference, a school lecture, a business proposal, in a webinar and business and professional representations the uploader spent hisher valuable. Water pollution is the leading worldwide cause of death and disease, e.
Feb 10, 2014 powerpoint is the worlds most popular presentation software which can let you create professional water pollution powerpoint presentation easily and in no time. An excessive amount of mercury in water can cause minamata disease in humans and dropsy in fishes. Air pollution is the presence of one or more disadvantageous content in such quantity and for such duration, as it is catastrophic, or tend to be catastrophic, to human health and welfare, animal or plant life. Excellent for making pupils listen to theteachers explanation and fill in the blanks based on that. Crops respond differently to both total and specific salts, some being more sensitive than others. It is our planets most distinctive, fundamental, and important resource. Water pollution is one of the worlds greatest problems. Water defines our planet, biology, and environment.
Sources of water pollution there are various classifications of water pollution. Fresh water pollution may be classified into two types. Water pollution can be classified as surface water or groundwater pollution. The lesson covers the complete explanation of class 8 chapter 18 pollution of air and water. Alicia facts about water pollution pollution means to make foul or unclean. Polluted water is of great concern to the aquatic organism, plants, humans, and climate and indeed alters the ecosystem.