WATER
WATER • The chemical formula of the water is H2O • Water is the more abundant chemical mixture on the earth and in the living creatures. • It is in constant movement through a cycle, called "the water's cycle."
THE WATER CYCLE • Water is present in all the environments. • All the water present on the earth forms the hydrosphere, that is the whole seas, oceans, rivers, lakes, glaciers, underground waters and damp lost in the atmosphere. • All the water on our planet belongs to the cycle of the water.
THE HYDROSPHERE It represents all the present waters in the subsoil and in the surface of a planet. SALT WATER 97%
SEA and OCEAN
WATER
FRESH WATER 3%
GLACIERS ICEBERG LAKE RIVER SOURCES WELLS STRATA
PERCENTAGES OF WATER USE 1. PEOPLE = 10% 2. AGRICULTURE = 70% 3. INDUSTRIES (COOL MACHINERY) = 20%
WATER: A PRECIOUS GOOD Water is a precious good that in a few years, will probably become as precious as oil. The melting of the glaciers and the pollution of waters will considerably reduce the water as resource for humanity.
The pollution of fresh water Various types of pollution exist: - Eutrophication = the excessive contribution of nourishing substances for the plants or of decomposed organic substances in the water. -
Sewerage = a system of pipes and passages that carry sewage.
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oil disasters = environmental disasters caused by oil spilled from ships or other containers into the enviorment.
DON’T WASTE TAP WATER • Carefully close the tap: a tap that loses a drop in the second disperses in one year around 5.000 liters. • Use the water used for washing fruit and vegetable to water plants and flowers. • Choose low consumption washing machines
• Use half the reservoir when you flush the toilet. • Don't leave water flow uselessly. • use drinkable water only for alimentary use.
Water a universal right The U.N. Resolution of July 28th 2010 declares for the first time in the history, the right to the water as universal and fundamental human right.
Portogruaro 1. The town administration includes in its official statute that water is a public common good 1. Water provision is recognized as public service with no economic profit.
European paper of the water 1. There is no life without water. Water is a precious good, essential to all the human activities 2. The availability of the fresh water is not endless. For this reason it is essential to preserve it, to constantly control it and to increase it. 3. The quality of water must be such to satisfy all the needs, but especially it has to satisfy the needs of the public health. 4. Water is a common patrimony, whose value must be recognized from everybody; everyone has the duty to use it with care.
How much water do the average Italian people use? • • • • • •
to have a bath 120-160 liters water to have a shower of 5 minutes 75 -90 liters for a shower of 3 minutes 35-50 liters every time we flush the toilet 9-16 liters every time we wash our hands 1,4 liters to brush the teeth leaving the water flow 30 liters
• • • • • •
To brush the teeth without leaving the water flow 2 liters to drink and cook around 6 liters a day to person to wash dishes 20 liters To wash them with the dishwasher 3040 liters for a load of washer-machine 80-170 liters to wash the car 800 liters
BY: GiAsTiN JeNnIfEr SaRa DeSiReE AnNa