WATERHOLIC - A drop of water a drop of hope

OCEANS AND SEAS

WATERHOLIC - A drop of water a drop of hope

The 70% of the Earth’s surface is covered of water,But only the 1% of the water is good to drink, because the most is salty or frozen. Oceans contains 1,350 million Km3 di H2O, and 28 million are frozen in the polar

caps.

WATERHOLIC - A drop of water a drop of hope

With the word “ocean” we intend the largest extents of water between the Continents

WATERHOLIC - A drop of water a drop of hope

In the past there was only a continet (PANGEA) and an ocean (PANTHALASSA). Than started the “continental drift” and mainlands began to move and to split in

different continents and Tethys in different oceans

WATERHOLIC - A drop of water a drop of hope

The nowadays layout of continents and oceans is dated about “only” 10 - 20 million years ago

WATERHOLIC - A drop of water a drop of hope

The extenions of oceans is different between northern and southern hemispheres: in the north they fill the 61% of the total surface, in the

south the 81%

WATERHOLIC - A drop of water a drop of hope

Oceans have different denomination, depending on the area of the word we are: Pacific Ocean, the one between America Asia and Australia, is the largest and

deepest of the Earth. The Philippine’s Trench is 11,516 m deep.

WATERHOLIC - A drop of water a drop of hope

Atlantic Ocean, is situated between America, Europe and Africa; it includes also shallow seas, such as Caribbean Sea, Mexican Gulf and Mediterranean Sea.

WATERHOLIC - A drop of water a drop of hope

Indian Ocean, is situated on the south of Asia and it’s the smallest one.

WATERHOLIC - A drop of water a drop of hope

With the word “sea” we intend smaller basins with shallower water, such as Mediterranean Sea or Red Sea; but we also call “sea” some

closed, salted, basins like the Caspian Sea

Mediterranean Sea Red Sea

WATERHOLIC - A drop of water a drop of hope

Every ocean and sea has a different amount of solved mineral salt. The average concentration is about 35%0 The sea with the highest concentration

in the Earth is the Dead Sea (35% - 10 time more than the others), and because of this, consent an easy floatage

The Dead Sea

WATERHOLIC - A drop of water a drop of hope

The geographic and geological difference between oceans and seas depends on the kind of the sea bed: the basament

of the “sea” is made of continental crust, on the contrary the basment of “ocean” is made of oceanic crust

SEA OCEAN

WATERHOLIC - A drop of water a drop of hope

Oceans are full of life, they regulate the climate, provide us food and different kinds of resources, and on their good health depends also our life.

So we MUST DEFEND this ecosystem as we defend fresh water

WATERHOLIC - A drop of water a drop of hope

THANK YOU