THE MARIANA TRENCH
The Amazing life, under the Pacific Ocean.
How the Mariana trench formed and how it became earth's deepest point?
The Mariana Trench isn't really the deep, narrow furrow that the word "trench" implies. Rather, the abyss marks the location of a subduction zone.
Subduction zones occur where one part of the seabed—in this case the Pacific plate—dives beneath another, the Philippine plate. Though tectonic forceseventually warp the Pacific plate so that it makes a near-vertical dive into the Earth's interior, at seabed level the plate dips at a relatively gentle angle. A tectonic plate is a huge hunk of rock, 60 miles (97 kilometers) or more thick, said Robert Stern, a geophysicist at the University of Texas, Dallas. "In order for this to sink back into the earth, it has to bend downward, and these are very gentle bends." One reason the Mariana Trench is so deep, he added, is because the western Pacific is home to some of the oldest seafloor in the world—about 180 million years old. Seafloor is formed as lava at mid-ocean ridges. When it's fresh, lava is comparatively warm and buoyant, riding high on the underlying mantle. But as lava ages and spreads away from its source, it slowly cools and becomes increasingly dense, causing it to settle ever lower—as is the case with the Mariana Trench. -National Geographic |
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The Depth of the Mariana Trench
The Mariana Trench is the deepest trench in the world. Right now the Mariana Trench is discovered as 36,198 feet (11,033 m) in depth. It is in the Pacific Ocean. The worlds tallest building (In Dubai) is 10 feet tall, and the Mariana trench can fill 13 of those buildings.
Color symbol imageColor: BlACKWe chose the color black to describe the Mariana Trench. We described the Mariana Trench with the color black because the color black is scary. Black is scary because it is a dark color. Black also means pitch-black which is scary. The black describes the Mariana Trench because it is scary and very not much discovered. The Mariana Trench is also scary because you die because it is deep and too much pressure is pushed that nothing can really go through.
Symbol: Question MarkWe chose a question mark for our symbol. We chose a question mark for our symbol because the Mariana Trench is not discovered as much as other places in the world. We know a little, but we are still trying to find out more. We have a lot of questions about the Mariana Trench and discovered only a little of them. A question mark means a wonder and a question so we chose a question mark to describe the Mariana Trench.
Image: Fish tank |
Is there life in the Mariana Trench?Surprisingly, there was and still is life in the Mariana Trench. In fact, there is a fish called snail fish. The snail fish is the fish that lives the deepest in the Mariana Trench. The snail fish lives 26,722 feet (8,145 m) deep in the trench. There are a more fishes that was investigated in the Mariana Trench. The fishes that live in the Mariana Trench can live in the Mariana Trench because they they are adapted to their habitat, the Mariana Trench.
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