What is the maximum circumference of the Earth? What is the circumference of the Earth?

Because the earth is a nearly circular irregular sphere with slightly flattened poles and slightly bulging equators, the radius of the earth's equator is about 6378 kilometers, and the polar radius is about 6357 kilometers, so the length of the equator is the maximum length that can circle the earth, and the equator is the longest circle on the earth, about 40,000 kilometers.

However, since the earth is an irregular sphere, the graticule is just a fictitious network composed of longitude coils and weft coils in order to more easily determine the location of a certain place on the earth, and each meridian is not necessarily the same, so accurate data is generally not given.

The radius of the equator is slightly longer, the radius of the poles is slightly shorter, and the polar axis is equivalent to the axis of rotation of an oblate sphere. According to the International Union of Geodesy and Geophysics in 1980, the main data on the shape and size of the Earth are as follows:

Equatorial radius. Radius of the poles.

Average radius. Flattening rate 1

Equatorial circumference. Meridian circumference.

Surface area volume 10832 108km3

In fact, the true shape of the Earth is slightly different from the oblate sphere mentioned above. Its southern hemisphere is slightly thicker and shorter, and the antarctic is concave inward about 30m; The Northern Hemisphere is slightly slender and long, with the North Pole protruding about 10 m upward. So it is an exaggeration to say that the true shape of the earth is slightly pear-shaped.

The circumference of the Earth is 40,076 km.

Because the earth is not a sphere but an ellipse, so there are many places in circumference, and the circumference is measured according to modern means, and the exact value of the circumference at the equator of the earth is 40,076 kilometers. The circumference of the North and South Poles is 39,900 kilometers of the Earth's diameter, the average diameter of the Earth is 1,000 kilometers, and the diameter of the Earth's equator is 12,756 kilometers.

The diameter between the Earth's north and south poles is 12630824 meters, or about 12,631 kilometers. The average radius of the Earth is about 6,371 kilometers, and it is an irregular elliptical sphere with slightly flattened poles and slightly bulging equators. The inner part has the core, the mantle, and the structure of the earth's crust, and the outer part of the earth has the hydrosphere, atmosphere, and magnetic field.

Introduction to Earth's contents:

Earth is one of the eight planets in the solar system, the third planet in order from near to far from the sun, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, 100 million kilometers away from the sun. The Earth rotates from west to east while revolving around the Sun. Existing between 40 and 4.6 billion years old, it has a natural satellite, the Moon, which makes up a celestial system, the Earth-Moon system.

It originated from the primordial solar nebula 4.6 billion years ago. The surface area of the earth is 100 million square kilometers, of which 71 percent is oceans and 29 percent is land. The Earth rotates from west to east while revolving around the Sun.

The Earth is the only celestial body in the universe where life is known to exist, and it is home to millions of living beings, including humans.

The circumference of the Earth is 40,075 km. The Earth's equatorial radius is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40076 kilometers. The inner part has the core, the mantle, and the structure of the earth's crust, and the outer part of the earth has the hydrosphere, atmosphere, and magnetic field.

The surface area of the earth is 100 million square kilometers, of which 71% is oceans and 29% is land. The Earth rotates from west to east while orbiting the Sun.

Morphological characteristics of the Earth:The shape of the Earth is roughly ellipsoidal. The effect of the Earth's rotation is slightly flattened along the Earth's axis through the poles and slightly uplifted near the equator.

From the center of the earth, the radius of the Earth's equator is 43 kilometers (27 miles) higher than the polar radius. Thus, the farthest point on the Earth's surface from the Earth's center of mass is not Mount Everest, the highest elevation, but the summit of Mount Chimborazo in Ecuador, located on the equator. The Earth's reference spheroid has an average diameter of about 12,742 km (7,918 mi), which is approximately equal to (40,000 km).

The above content reference: Encyclopedia - Earth.

The circumference of the Earth is: about 40,075 km.

The radius of the Earth's equator is kilometers, the polar radius is kilometers, the average radius is about 6371 kilometers, and the equatorial circumference is about 40075 kilometers.

The Earth's surface area is 100 million square kilometers, of which 71% is oceans and 29% is land. The main components of the atmosphere are nitrogen and oxygen, as well as small amounts of carbon dioxide and argon.

Formation of the Earth:

The Earth was formed about 4.5 billion years ago, and this rocky planet was originally just dust floating in space from the size of a huge, ancient star at the end of its life.

The earth can also be divided into 5 since its formation"generations", from ancient to modern are: Archean, Proterozoic, Paleozoic, Mesozoic, and Cenozoic. Some generations are further divided into several"Discipline", such as the Paleozoic era from far to near divided into Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian.

This is the roughest division of the period of the earth's history, called"Geological time"People in different geological ages have different characteristics.

In the Archean 2.4 billion years ago, primitive lithosphere, hydrosphere and atmosphere had formed on the surface of the earth.