Hazaa saif

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Hazaa saif

  1. 1. Al Ghazali SchoolScience Department Water Pollution Hazaa Saif AlSayari Grade 7/4 Teacher / Tarek Ibrahim
  2. 2. IntroductionDid you know that the water we use today is the same water the dinosaurs used?We cannot create new water. For millions of years, the water we have has beenused again and again. We have been able to do this because there are natural cyclesthat clean the water each time we use it.People are polluting our water. Businesses and cities dump chemicals and wasteproducts into our rivers, lakes and oceans. People throw trash–furniture, garbage,old tires, cars, old fencing, anything they can think of–into the water. People alsopollute the water by accident, by allowing their cars to leak oil and gas onto theground. That oil and gas eventually washes into the water during rain storms andwhen people clean their driveways off with water.Effect of Water PollutionEstimating suggest the nearly 1.5 billion people lack safe drinking water and that atleast 5 million deaths per year can be caused to waterborne diseases. With over 70% of the world covered by oceans, many people have dumped waste in thesebodies of water. Raw sewage, garbage and oil spills is overwhelmed with pollutionin the waters.Sometimes beaches are closed often because of high amounts ofbacteria from sewage disposal and wildlife is beginning to suffer and die.
  3. 3. Sources of Water PollutionThere are direct and indirect sources of water pollution.Direct sources include thegarbage from factories, refineries, waste and plants.Indirect sources include contaminants that enter the water supply from soils/groundwater systems and from atmosphere , rain water. Soils and groundwatercontain a lot of industrial waste.How does it affect us!Water Pollution affects people because the same water that is polluted by thosefactories, things from our house or people dumping things into the water is thesame water that we drink and use.Scientists have proven that you can get diseases from such drinking water. Kidssometimes swallow water from pools and lakes and if the water is polluted theycan get very ill and die.Three Sides To The Story Not all people think water pollution is worth doing something about. Some people think that water pollution will go away on its own. Some people think that water pollution is something to care about and want to do something to stop it. Some people don’t know what to think. They think that what the first group is talking about is true but also the second group.
  4. 4. How much water do we useWhat will happenIt will turn into people thinking that water pollution is fine. Then a lot of peoplewill start to die and then they’ll start to care.The water will turn even grosser than it already is and people won’t be allowed togo swimming anymore because of the illnesses.
  5. 5. How Can We Best Deal with Water Pollution Streams can cleanse themselves of many pollutants if we do not overload them. Preventing water pollution usually works better and costs less than trying to clean it up. Reducing water pollution requires preventing it, working with nature in treating sewage, cutting resource use and waste, reducing poverty, and slowing population growth.
  6. 6. References1. http://www.umich.edu/~gs265/society/waterpollution.htm2. http://dictionary.reference.com/search?q=Water%20pollution3. http://stuffintheair.com/water-pollution-pictures.html4. www.lenntech.com

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