What are oceans called - how many oceans are there on earth
The vast waters covering 71 percent of the Earth's surface are divided into geographically distinct designated areas. The boundaries between these regions have evolved over time for various historical, cultural, geographical and scientific reasons.
Historically, there have been four designated ocean basins: Atlantic, Pacific, Indian and Arctic. However, most countries – including the United States – now recognize the southern (Antarctic) as a fifth ocean basin. The Pacific, Atlantic and Indian oceans are the largest known.
what is the ocean called
The ocean is a collection of salt water that is contained in vast basins on the surface of the Earth. The vastness of Earth's oceans is clearly visible when viewed from space. About 71 percent of the Earth's surface is covered by seas. It has an average depth of 3,688 metres.
As the world ocean is a major component of the Earth's hydrosphere. It is an integral part of life. Part of the carbon cycle, and influences climate and weather patterns. The World Ocean is home to 230,000 known species. Most of it is at depth. Therefore the number of species present in the ocean is very large. The origin of Earth's oceans is unknown. It is believed that life has evolved from this.
deepest point of the sea
The deepest point in the ocean is the Mariana Trench, located in the Pacific Ocean near the Northern Mariana Islands. Its maximum depth has been estimated to be 10,971 metres. The British naval ship Challenger surveyed the trench in 1951 and named the deepest part of the trench "Challenger Deep". In 1960, Trieste successfully reached the bottom of the ditch, with a crew of two men.
how many oceans are there on earth
There are a total of five oceans on Earth. Pacific Ocean, Atlantic Ocean, Indian Ocean, Arctic Ocean and Antarctic Ocean or Southern Ocean.
1 Pacific Ocean - It separates Asia and Australia from America. Its area is spread over 168,723,000 sq km.
2 Atlantic Ocean - separates America from Europe and Africa. Its area is 85,133,000 sq km.
3 The boundaries of the Indian Ocean separate southern Asia and Africa and Australia. It is spread over 70,560,000 sq km.
4 The Southern Ocean surrounds Antarctica. It was sometimes considered to be an extension of the Pacific, Atlantic and Indian Oceans. Spread over 21.960,000 sq km.
5 The borders of the Arctic Ocean extend to northern North America and part of Eurasia and the Arctic. It is spread over an area of 15,558,000 sq km.
what are ocean currents
Ocean current is a continuous movement of seawater generated by several forces acting on water, including wind, Coriolis effect and temperature, salinity differences.
The depth profile and direction of other currents affect the ocean current. Ocean currents are primarily horizontal water movements.
Ocean currents flow over long distances and together they form the global conveyor belt, which plays a major role in determining the climate of many regions of the Earth.
Specifically, ocean currents affect the temperature of the regions through which they travel. For example, warm currents traveling along more temperate coasts increase the temperature of the region by warming oceanic winds that blow over them. Perhaps the most striking example is the Gulf Stream, which makes northwestern Europe more temperate than any other region at the same latitude.
Another example is Lima, Peru, where the climate is cooler, being subtropical than tropical latitudes due to the influence of the Humboldt Current. Ocean currents are the patterns of movement of water that affect climate zones and weather patterns around the world.
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