Water 1

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 ORIGINWATER 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 Water isis a compound of a compound of

hydrogen and oxigen and hydrogen and oxigen and

it has chemical formula it has chemical formula

HH22OO

WATER COMPOSITIONWATER COMPOSITION

WATER’S CLASSIFICATIONWATER’S CLASSIFICATIONThere are several kinds of waters There are several kinds of waters on the earth:on the earth:

Superficial Drinkable

Mineral

Thermal

WATER CYCLEWATER 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 SPRINGSTHE SPRINGS

They are watercourses They are watercourses

with perennial flow fed with perennial flow fed

by springs, atmospheric by springs, atmospheric

precipitations and by precipitations and by

the waters from meltin the waters from meltin

of snow and glaciers.of snow and glaciers.

THE RIVERSTHE RIVERS

THE GLACIER IS USUALLY THE GLACIER IS USUALLY

COMPARED TO A RIVER FLOWING COMPARED TO A RIVER FLOWING

BY GRAVITY FORCE FROM THE BY GRAVITY FORCE FROM THE

HIGHEST MOUNTAIN HIGHEST MOUNTAIN

DOWNWARDS AD PROVIDING DOWNWARDS AD PROVIDING

WATER TO VALLEYS AND WATER TO VALLEYS AND

FEEDING RIVERS.FEEDING RIVERS.

THE GLACIERSTHE GLACIERS

WATER CONSUMPTIONWATER 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 With the extraordinary increase of the

industrial production and of the industrial production and of the

consuptions, it was determinated a consuptions, it was determinated a

deep alteration of the surround deep alteration of the surround

environment. Among the most evident environment. Among the most evident

injuries caused by man to habitat, injuries caused by man to habitat,

there is the water pollution.there is the water pollution.

WATER POLLUTIONWATER POLLUTION

KINDS OF WATER POLLUTIONKINDS OF WATER POLLUTION

THERE ARE SEVERAL KINDS OF THERE ARE SEVERAL KINDS OF

WATER POLLUTION:WATER POLLUTION:

• Natural

• Domestic

• Agricultural

• Industrial

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 During floods, river waters carry

several materials, among which several materials, among which

there is also organic material that there is also organic material that

undergoes processes of undergoes processes of

putrefaction and fermentation.putrefaction and fermentation.

NATURAL WATER POLLUTIONNATURAL WATER POLLUTION

HOUSEHOLD WATER POLLUTIONHOUSEHOLD WATER POLLUTION

Population increase and a greater welfare

bring about increasing in:• consumptions and consumptions and sewer-discharge,sewer-discharge,

• foams due to nonfoams due to non biodegradable detergents, biodegradable detergents,

• plastic materials consumptionsplastic materials consumptions.

AGRICULTURAL AGRICULTURAL WATER POLLUTION WATER POLLUTION

It is caused by the It is caused by the products used for lands products used for lands and plants, whose and plants, whose refuses are carried by refuses are carried by backwaters and dived backwaters and dived into rivers and canals.into rivers and canals.

INDUSTRIAL WATER POLLUTIONINDUSTRIAL WATER POLLUTION

Most of the factories produce Most of the factories produce

organic waste which give rise to organic waste which give rise to

fungi and bacteria. One million fungi and bacteria. One million

tons of waste are discharged tons of waste are discharged

into our seas. 70% come from into our seas. 70% come from

industrial waste.industrial waste.

PERSONAL REMARKS• HOW CAN I PROTECT WATERHOW CAN I PROTECT WATER??

• I SHOULDN’T LEAVE USELESSLY THE TAP RUNNING;

• I SHOULDN’T WASTE WATER IN GAMES OR TRICKS;;

• I SHOULDN’T THROW RUBBISH, PAPER, PLASTIC

BAGS IN THE WATER IN ORDER TO AVOID TO

POLLUTE IT, BECAUSE POLLUTED WATER CANNOT

BE USED;;

• I SHOULD INFORM THE OTHERS AND GET

INFORMATION ABOUT ALL THE POSSIBLE WAYS TO

PROTECT WATER..