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Embed code for: Mariana Trench
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Mariana Trench, also called Marianas Trench, is the crescent shaped trench located in the western Pacific Ocean and it has been found to have the deepest part of the world's oceans.
It is the Challenger Deep in the Mariana Trench region that is the deepest spot on earth, measuring over 11 kilometers in depth.
Did you know that if the world's highest mountain, Mount Everest, is placed in the Challenger Deep, its 8,848-meter-high peak will be more than two kilometers below the sea level?
It is amazing to note that the pressure exerted by the water column at the bottom of the trench is over thousand times greater than the standard atmospheric pressure at the sea level!
Owing to the very high pressure exerted by the water column above, the density of water at the Mariana Trench increases by about 5 percent, which means that 95 liters of water at the bottom of trench will have the mass equal to 100 liters of water at the surface.
The temperature of water at the Mariana Trench varies between 1 C to 4 C, meaning it is near the freezing point and its constant contact could be unbearable for the humans.
Because of the earth not being a perfect sphere, the radius at the poles is about 25 kilometers less than the radius at the equator. That is why the bottom of the Mariana Trench is not the closest point to the center of the earth. But on the contrary, some parts of the Arctic Ocean seabed lie closest to the earth's center.
According to the findings of a research, the trench is regarded as one of the world's oldest seabed’s, and it is about 180 million years old.
It is interesting to note that the very hot water emitted by the vents is rich in its mineral contents that help in sustaining life in this area.
The contrast between the highly acidic & hot, and the highly basic & cool environment in the trench gives rise to an ever changing and nearly toxic environment, but even then a variety of life thrives here!
DILSHAN MARASINGHE 10B1
~DEEPEST TRENCH IN THE WORLD~