On the earth we live on, there are continents and oceans. And the ocean is much larger than the land. According to calculations by scientists,the Earth’s surface area is 510 million square kilometers, of which the ocean occupies 70.8%, or 361 million square kilometers. The remaining 149 million square kilometers is land, and its area is only 29.2% of the Earth’s surface area. %. In other words, less than one-third of the earth’s land mass. Therefore, the earth that astronauts see from space is a blue "water ball", and the vast continent where we humans live is actually just a few "islands" dotted in a vast ocean. It is not unreasonable for some people to suggest that the earth be changed into a "water ball".
Global sea and land distribution map
Seeing the land and sea from the air
Schematic diagram of the distribution of land and sea with latitude
You can use the "Southern and Northern Hemisphere Sea and Land Distribution Map" to further explain the distribution of sea and land on the earth. The figure gives the percentage distribution of ocean and land area with latitude. As can be seen from the figure, except for the Antarctic region between 45 degrees and 70 degrees north latitude and 70 degrees south latitude, where the land area is larger than the ocean area, the ocean area is larger than the land area at most other latitudes, and between 56 degrees south latitude and 65 degrees, almost no land, completely surrounded by sea water. This uneven distribution with latitude is a characteristic of the distribution of Shanghai and mainland on the earth. Another feature is the symmetry of the distribution of sea and land. For example, the Antarctic is land and the North Pole is sea; the high altitude areas of the Northern Hemisphere are where continents are concentrated, while the high latitudes of the Southern Hemisphere are where three oceans are connected.
These characteristics of the distribution of oceans and land on the earth have a great impact on the movement of sea water.
Distribution map of land and sea in southern and northern hemispheres
animal tags：
you may also like
Shoulder-ringed crappie has multiple annular bands on its side and small blue rings on its shoulders. The dorsal fin has 12 sharp spines. There are serrations on the edge of the opercular bone, and there is a strong spine at the corner. The abdominal knot and anal fin both have strong spines....
On the southern coast of the Mediterranean Sea, there is a place called Tunisia. In the nearby Madia Sea area, 40 meters underwater, many marble columns were found buried in the mud. According to historians, they are cultural relics from 2,000 years ago. After the discovery was announced, Aus...
Every August 18th of the lunar calendar, people come to Haining, Zhejiang, to watch the tides in droves. At this time, the shore was crowded with people and thousands of people were moving around. People were anxiously waiting for the arrival of that exciting moment. After a while, I suddenly...
The common name of boxfish is horn. The head and body armor are pentagonal, with a pair of preorbital spines and lumbar spines. The tail fin has purple-blue round spots. Body armor yellow-green. Body length 56 cm. Distribution areas: South China Sea, East China Sea, Yellow Sea, Red Sea, East...
On November 15, 1963, 32 kilometers south of Iceland in the North Atlantic, a submarine volcano 130 meters below the sea suddenly erupted, ejecting volcanic ash and water vapor columns hundreds of meters high. At the climax of the eruption, the volcanic ash and smoke were washed up to several...
The tentacled lionfish has a large mouth. The pectoral and dorsal fin spines are very long and the fin membranes are deeply split. The pectoral fin membrane is fan-shaped and has brown spots. Horizontal banding, no longitudinal banding on the caudal peduncle. Body length 20 cm. Distribution a...
In the coral reefs of the South China Sea, where there are many corals, there live some fish with flat sides, degraded abdomen, about 20 centimeters in length, and an appearance that resembles the pufferfish (skinned fish). Because their whole body is covered with hard plate-like thick scales...
Alias of Pacific short-beaked dolphin: sickle-fin dolphin, sickle-fin spotted dolphin, short-beaked dolphin. The rostrum is short but clearly demarcated from the forehead. The dorsal fin is tall and eye-catching, curved back in a sickle shape, and has a wide base. The back of the body is blac...
Email: jsset#163.com (change # to @) Please indicate your purpose of visit! Guangdong ICP No. 2022053326 XML| map| Chinese
