Major Oceans
Here are the major oceans of the Earth with their specifications as mentioned below.
| Ocean | Specifications |
|---|---|
| Pacific Ocean | Largest ocean in this worls that covers one third of the Earth’s surface. Separates the North and South America from Asia and Australia. Named ‘Pacific’ for its calmness by Ferdinand Magellan. Deepest trench: Mariana Trench (deepest in the world). Average depth: 4280 meters. |
| Atlantic Ocean | Second-largest ocean, covering about 20% of Earth’s surface. Named after Greek mythology, “Sea of Atlas”. Deepest trench: Puerto Rico Trench. Formation linked to Pangaea and Gondwanaland. Largest island: Greenland. – Sargasso Sea. |
| Indian Ocean | Third-largest ocean, named after India. Warmest ocean, mostly in the eastern hemisphere. Deepest trench: Sunda Trench. Marginal seas vital for global trade routes. Largest island: Madagascar. |
| Southern Ocean | Also called Antarctic or Austral Ocean. Encircles Antarctica, known for turbulent waters. Drained by the Drake Passage. Shares borders with Atlantic, Indian, and Pacific Oceans. |
| Arctic Ocean | Smallest and shallowest ocean that lies within the Arctic Circle. Frozen in winter, lowest average salinity. Deepest point: Molloy Deep. Connected to the Atlantic and Pacific via various seas and straits. |
Water (Ocean)| Class 11 Chapter 12 Geography Notes
The Ocean Water is the salty water that makes the whole ocean and sea. It is the primary component of the Earth’s hydrosphere which accounts for almost 97% of the Earth’s water. The ocean and sea are the important habitats for so many species of the Earth. It is a complex mixture of 96.5 percent water and 2.5 percent salts. Some smaller amounts of other substances, including dissolved inorganic and organic materials, particulates, and a few atmospheric gases are also present in the Ocean Water.
In this article, we are going to discuss the Water of the Ocean in detail.
Water (Ocean)| Class 11 Chapter 12 Geography Notes