World terrain (main mountain ranges, basins, plateaus, plains, hills) map

As shown in the world topographic map, most of the earth's surface is ocean, with only a small part being land.

The total surface area is about 510 million square kilometers, of which the ocean area is about 360 million square kilometers, accounting for 70.8% of the total surface area; the land area is about 149 million square kilometers, accounting for 29.2% of the total surface area.

In other words, seven percent of the earth's surface is ocean and three percent is land.

The land on the earth's surface is divided into many pieces of varying sizes by the ocean. Usually people call the large area of ??land surrounded by the ocean a continent, and the small pieces of land called islands.

The mainland and its nearby islands are collectively called a continent.

In this way, the surface land is divided into 6 continents: Eurasia, Africa, North America, South America, Antarctica and Australia.

Expanded information There are two internationally accepted world maps. One is the Pacific pattern world map with the longitude lines on the Atlantic Ocean as dividing lines. It can also be called the "Pacific version of the world map", which fully expresses the geographical relationships of the Pacific Rim region.

, dividing the Atlantic Ocean on both sides of the image.

The other is the Atlantic pattern world map with the longitude lines on the Pacific as dividing lines, which can also be called the "Atlantic version of the world map". It fully expresses the geographical relationship of the Atlantic region and divides the Pacific Ocean on both sides of the map.

The reason why these two versions of the world map have become universal versions is that they follow two important principles for compiling world maps, namely the principle of not cutting or less cutting the land and the principle of using 15° longitude and latitude lines to divide the map.