Download Oceans and Seas

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
Mediterranean Sea
Red Sea
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
WATERHOLIC - A drop of water a drop of hope
The Dead Sea
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
WATERHOLIC - A drop of water a drop of hope
SEA
OCEAN
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
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