ISTITUTO COMPRENSIVO “P. S. ZIMARINO” - CASALBORDINO SCUOLA MEDIA “L. DA VINCI” - SCERNI WATER: SOURCE OF LIFE Water resembles the soul of man Descends from the sky, back to heaven Then again, it is force that falls upon the earth , (Vincenzo Errante) In another series of eternal story ...
Water is a precious element which covers about the 3/4 of the earth’s surface. Without water there wouldn’t be any form of life on the earth. WHAT IS WATER?
WATER ORIGIN The water on the earth probably originated after the very numerous and intense volcanic eruptions which took place on the earth’s surface for about 3 milliard years.
Water is a compound of hydrogen and oxigen and it has chemical formula H 2 O WATER COMPOSITION
WATER’S CLASSIFICATION There are several kinds of waters on the earth: Superficial Drinkable Mineral Thermal
WATER CYCLE It consists of a continous movement of water from atmosphere to soil and from ground to atmosphere.
They are natural flous of water which gush out from the ground in a single point and are fed by a vein flowing in non visible underground ways. THE SPRINGS
They are watercourses with perennial flow fed by springs, atmospheric precipitations and by the waters from meltin of snow and glaciers. THE RIVERS
THE GLACIER IS USUALLY COMPARED TO A RIVER FLOWING BY GRAVITY FORCE FROM THE HIGHEST MOUNTAIN DOWNWARDS AD PROVIDING WATER TO VALLEYS AND FEEDING RIVERS. THE GLACIERS
WATER CONSUMPTION Beginning from the 60s the water consumption remarkably increased, so much to become a real problem for the future generations.
With the extraordinary increase of the industrial production and of the consuptions, it was determinated a deep alteration of the surround environment. Among the most evident injuries caused by man to habitat, there is the water pollution . WATER POLLUTION
KINDS OF WATER POLLUTION <ul><li>THERE ARE SEVERAL KINDS OF WATER POLLUTION: </li></ul><ul><li>Natural </li></ul><ul><li>Domestic </li></ul><ul><li>Agricultural </li></ul><ul><li>Industrial </li></ul>
PETROLEUM PARASITICIDES PESTICIDES FERTILIZERS WASTE NATURAL WATER POLLUTION DEATH OF FISH AND SEA-BIRDS LOSSES IN TOURISM AND ECONOMY HEALTH DAMAGES WATER BEDS POLLUTION EUTROPHICATION OF LAKES AND SEAS INDUSTRIAL AND HOUSEHOLD WASTE
During floods, river waters carry several materials, among which there is also organic material that undergoes processes of putrefaction and fermentation. NATURAL WATER POLLUTION
HOUSEHOLD WATER POLLUTION Population increase and a greater welfare bring about increasing in: <ul><li>consumptions and </li></ul><ul><li>sewer-discharge, </li></ul><ul><li>foams due to non </li></ul><ul><li>biodegradable detergents, </li></ul><ul><li>plastic materials consumptions . </li></ul>
AGRICULTURAL WATER POLLUTION <ul><ul><ul><ul><li>It is caused by the products used for lands and plants, whose refuses are carried by backwaters and dived into rivers and canals. </li></ul></ul></ul></ul>
INDUSTRIAL WATER POLLUTION Most of the factories produce organic waste which give rise to fungi and bacteria. One million tons of waste are discharged into our seas. 70% come from industrial waste.
PERSONAL REMARKS <ul><li>HOW CAN I PROTECT WATER ? </li></ul><ul><li>I SHOULDN’T LEAVE USELESSLY THE TAP RUNNING; </li></ul><ul><li>I SHOULDN’T WASTE WATER IN GAMES OR TRICKS ; </li></ul><ul><li>I SHOULDN’T THROW RUBBISH, PAPER, PLASTIC BAGS IN THE WATER IN ORDER TO AVOID TO POLLUTE IT, BECAUSE POLLUTED WATER CANNOT BE USED ; </li></ul><ul><li>I SHOULD INFORM THE OTHERS AND GET INFORMATION ABOUT ALL THE POSSIBLE WAYS TO PROTECT WATER . </li></ul>