The surface of the earth, except land, is the ocean.
The ocean is a large body of water separated by land on the earth. The waters in the world are divided into four major waters, namely, the Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean. The four oceans are interlinked.
The part of the ocean that meets the land is called the ocean. Such as Bohai Sea, Yellow Sea, East China Sea, South China Sea, Baltic Sea, Mediterranean Sea, Caribbean Sea, Pacific Ocean and American continent.
The mountain is a highland with high altitude and steep slope. There is usually only one mountain; Larger mountains usually have peaks of different heights, the highest of which is called the main peak. For example, Lushan Mountain, about 25 kilometers long and 10 kilometers wide, has more than 90 peaks of different sizes, the highest of which is Hanyang Peak.
Mountains are a collection of mountains. Rows of mountains are connected together, and the mountains fluctuate and extend in a certain direction like veins, so they are called mountains. The scale of the mountain is much higher than that of the mountain. For example, Kunlun Mountain is about 2500 kilometers long and 130-200 kilometers wide, with numerous mountains.
The continuous and vast water body on the earth's surface is called the ocean, which is far from the mainland, with a vast area and a large depth and is less affected by the mainland. The world's oceans are divided into four parts: the Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean. The Pacific Ocean is the largest ocean in the world, accounting for half of the world's ocean area. It lies between America, Asia and Europe, Antarctica and Oceania. The Pacific Ocean is also the deepest, and the world's deepest Mariana Trench (1 1022m) is located in the western Pacific Ocean. The Atlantic Ocean is the second largest ocean in the world, located between Asia and Europe, Africa, Antarctica and America, in an S-shape. The Indian Ocean is the third largest ocean in the world, mainly located in the tropics, with an inverted triangle. The Arctic Ocean is the smallest ocean, with the north pole as the center, surrounded by North America and Eurasia, with the highest latitude and the widest longitude.
The oceans are interrelated and have boundaries. The dividing line between the Pacific Ocean and the Atlantic Ocean is Cape Horn in South America, which extends 68 degrees west to Antarctica. The dividing line between the Pacific Ocean and the Indian Ocean is along the Malay Peninsula, the Straits of Malacca, Sumatra, Java, Timor, Cape Delhi, Tasmania and Antarctica. The dividing line between the Indian Ocean and the Atlantic Ocean is the Cape of Good Hope in Africa, at the longitude of 20 degrees east of Antarctica. The Arctic Ocean is roughly separated from other oceans by the Arctic Circle.