Question

Name deepest trench of Pacific Ocean.

Answer 1

The Mariana Trench or Marianas Trench,[1] located in the western Pacific Ocean approximately 200 kilometres (124 mi) east of the Mariana Islands, and is the deepest known point in the world's oceans. It is a crescent-shaped trough in the Earth's crust averaging about 2,550 km (1,580 mi) long and 69 km (43 mi) wide. The maximum-known depth is 10,994 metres (36,070 ft) (± 40 metres [130 ft]) at the southern end of a small slot-shaped valley in its floor known as the Challenger Deep.[2] However, some, unrepeated, measurements place the deepest portion at 11,034 metres (36,201 ft).[3] For comparison: if Mount Everest were dropped into the trench at this point, its peak would still be over 2 kilometres (1.2 mi) underwater.[a]

At the bottom of the trench the water column above exerts a pressure of 1,086 bars (15,750 psi), more than 1,000 times the standard atmospheric pressure at sea level. At this pressure, the density of water is increased by 4.96%, so that 95.27 litres of water under the pressure of the Challenger Deep would contain the same mass as 100 litres at the surface. The temperature at the bottom is 1 to 4 °C (34 to 39 °F).[5]

The trench is not the part of the seafloor closest to the centre of the Earth. This is because the Earth is not a perfect sphere; its radius is about 25 kilometers (16 mi) smaller at the poles than at the equator.[6] As a result, parts of the Arctic Ocean seabed are at least 13 kilometers (8.1 mi) closer to the Earth's centre than the Challenger Deep seafloor.

In 2009, the Mariana Trench was established as a United States National Movement.

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Answer 2

Deepest trench of Pacific Ocean.

Explanation:

• Mariana Trench is also known as the deepest trench of the Pacific Ocean and also in the earth’s ocean.
• This deep-sea trench is located on the east and west side of the Mariana Islands.
• It is believed that the Mariana trench is so deep because the Western Pacific and other are the home or the birth point which is believed to be the oldest seafloor in the world, which is believed to be 180 million years old.