Because in ancient times, people lived on land and had a small range of activities and observations, so they were unable to recognize the full picture of the earth. In addition, ancient navigation technology was backward and they did not know that the ocean was vast, so the earth was not named water polo. , called Earth.
When this name was given, people not only believed that the land in the world was larger than the ocean, but also believed that the land would always be flat. The Earth is the third planet from the inside to the outside of the solar system. It is also the terrestrial planet with the largest diameter, mass and density in the system.
The naming of the earth
The English name Earth originates from Middle English, and its history can be traced back to Old English (often called "eor?e"), in the Germanic languages. They all have cognate words, and their original Germanic root is constructed as "*er?ō".
It is called "Terra" in Latin, which is the name of Theia, the earth goddess in ancient Roman mythology. In Greek, it is called "Γα?α" (Gaia), which is the name of the earth goddess Gaia in Greek mythology.
The Chinese word "earth" first appeared in the Ming Dynasty during the spread of Western learning to the east. The first person to introduce the word was the Italian missionary Matteo Ricci, who wrote "The Complete Map of Kunyu and Ten Thousand Kingdoms" This word is used in. In the late Qing Dynasty, modern Western science was introduced to China, and the theory of a round earth was gradually accepted by the Chinese. The word "earth" (also known as "earth") was widely used. Shenbao published an article "Earth Theory" in the first month of its publication.