Will the size and shape of the Earth change?

The shape and size of the earth.

It depends on the human being and the environment of the solar system in which they live. If the sun doesn't exist, it's no longer interesting to talk about the earth.

The change in size is mainly due to the fact that various meteorites in the universe have fallen to Earth over the years.

And there is also a saying that the moon is part of the earth. Because of a large collision, part of the earth broke away from the gravitational pull of the earth and gradually gathered outside the earth to form today's moon. There is evidence that the Moon is moving away from the Earth at a certain speed (I have forgotten how much I forgot about it).

Therefore, the size will change, and it depends on the situation whether it is more or less.

The shape is changed by the centrifugal force generated by the rotation of the Earth. That's why the Earth is elliptical, and that's why the equator is larger than the meridian coil.

The Earth is an irregular spheroid with slightly flattened poles and a slightly bulging equator. 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.

The interior of the earth is divided into the core, mantle, and crustal structure, and the surface of the earth has a hydrosphere, atmosphere, and magnetic field. The Earth is the only celestial body in the universe where life is known, and it is home to millions of living beings, including humans.

The internal structure of the Earth

The Earth's interior, like other terrestrial planets, can be divided into layers based on chemical or physical (rheology) properties. However, there is a clear difference between the inner core and outer core of the Earth, which is a feature not found in other terrestrial planets.

The outer layer of the Earth is the crust of silicate minerals, and the mantle underneath is made up of a layer of viscous solids. The demarcation between the mantle and the crust is the Moho discontinuity. The thickness of the Earth's crust varies depending on the location, ranging from 6 km on the seafloor to 30 to 50 km on land.

The crust and the colder, harder upper layers of the mantle are collectively called the lithosphere, and plates are formed in this region.

Below the lithosphere is the less viscous asthenosphere, which slides just above it. Major changes in the crystal structure of the Earth's mantle occur between 410 and 660 km below the surface, the transition zone separating the upper mantle from the lower mantle. Below the mantle is the core-mantle boundary (Gutenberg discontinuity) that separates the mantle from the core, and below is the very low-viscosity liquid outer core, and the innermost is the solid inner core.

The above content refers to Encyclopedia-Earth.

The above content refers to Encyclopedia - The Shape of the Earth.

The shape and size of the Earth are as follows:

The shape of the earth, that is, the shape of the earth. With the development of science and technology, it has been discovered that the earth is not a positive sphere, but an irregular sphere with slightly flattened poles and a slightly bulging equator.

The average radius of the earth is 6,371 kilometers, the maximum circumference is about 40,000 kilometers, and the surface area is about 100 million square kilometers, of which 71% is oceans and 29% is land.

Introduction to Earth

The Earth's atmosphere is mainly made up of nitrogen and oxygen. The tropics receive more solar energy than the polar regions and redistribute it through atmospheric and oceanic circulation. Greenhouse gases also play an important role in regulating the surface temperature.

The climate of a region is determined not only by latitude but also by factors such as altitude and proximity to the region and the ocean. Severe weather such as tropical cyclones, thunderstorms, and heat waves often occur in a wide area and have a great impact on life.

The Earth's gravitational pull interacts with other objects in space, especially the Moon, which is the Earth's only natural satellite. It takes about a few days for the Earth to revolve around the Sun.

The Earth's axis of rotation is tilted relative to its orbital plane, thus producing seasons on Earth. The gravitational interaction between the Earth and the Moon causes tides that stabilize the direction of the Earth on its axis and gradually slow down its rotation. The earth is the home of human beings living together, and there is only one earth for human beings.

The shape of the earth is an irregular sphere, with a size of 100 million square kilometers, a maximum circumference of 40,000 kilometers, an equatorial radius of 6,378 kilometers, a polar radius of 6,357 kilometers, and an average radius of 6,371 kilometers. The reason why the earth grows like this is because it not only revolves around the sun, but also rotates at the same time, and the surface of the earth has both land and water, and in order to maintain the internal gravitational balance, under the "fight" of all parties, it grows into this strange shape.

On the earth's surface, there are mountains, basins, rivers, lakes, and oceans, among others. It can be said that the surface of the earth is an extremely irregular curved surface, but these ups and downs are small relative to the whole earth. The area of the earth is 100 million km, the area of the ocean is about 100 million km of the earth's surface, and the land area is only about 100 million km.

The maximum undulation of the surface landform is 840 m in average elevation, most of which account for 75% of the total area and are below 1000 m.

The world's oceans determine the main features of the Earth's appearance, since 3 4 of the Earth's crust is surrounded by a layer of water about 4000m thick. The Earth's landforms at the ocean floor of the world's oceans are characterized by ocean basins, mid-ridge mountain systems, faults, and deep troughs. In addition, the Earth is asymmetrical with the equator in terms of shape, for example, the Earth's land 2 3 is in the Northern Hemisphere, only 1 3 is in the Southern Hemisphere, and most of the islands, ocean ridges and deep ocean trenches are in the Northern Hemisphere.

Global warming is exactly like this, because of this, the atmosphere will become thicker and thicker, and then its mass will continue to rise, and the end result is that the heat dissipation effect begins to fail, and the heat absorption effect begins to accumulate, and the earth's temperature begins to rise gradually, Venus is a perfect example. Because Venus is a planet shrouded in a dense atmosphere. Looking at the fossils, you will find that most of the fossils are found deep in the earth.

This means that the earth is covered with a lot of dust every day, and if you go by 100 million years, you will find that the earth is suddenly a little bigger. With the factor of time, it will get bigger and bigger!

One is that the earth is constantly rotating and revolutionizing, because the earth is in constant motion, then it slowly becomes an ellipse, and it becomes an elliptical shape due to the movement. The continuous life and activities of human beings on the earth are caused by the slow warming of the earth, and after the warming, the glaciers continue to melt, which changes some conditions on the earth's surface. Due to the continuous increase of the population on the earth, the demand for this arable land will increase after the population increases, and human activities continue to change the shape of the earth's surface, one is arable land, the other is the destruction of forests, and there are buildings, highways, etc., all of which have great changes to the earth's surface.

In fact, the most fundamental reason is the rotation and revolution of the earth, which plays a decisive role in shaping the shape of the earth. The movement of the earth's crust and the separation of continents are the testimony of the expansion of the earth, the continents that were originally connected and encompassing the whole earth were cracked in the expansion of the earth, and the cracks became a vast ocean, and some of the cracks are still expanding, and the distance between some continents is also increasing. Another theory is that the earth was formed by the accumulation of cosmic dust.

Cosmic dust and meteorites are slowly moving closer to the earth due to the gravitational pull of the earth. It is estimated that about 100,000 tons of cosmic dust enter the earth's atmosphere in a day and night, and more than 100 tons fall to the ground, or 40,000 tons a year.

I think the size of the Earth is constantly getting bigger; The main reason is that the original shape of the earth is different from the current shape, and the shape is constantly changing, and according to scientists, the volume of the earth is several times larger than before.

The earth is constantly getting bigger, which is related to gravity, and the mass will become more and more.

The volume of the Earth is getting bigger, and there are many experts who show that the universe is expanding, indicating that the volume is particularly large.