How much do you know about the earth, what you know about the earth

Needless to say, the radius of the earth, its rotation, its revolution, etc. It is worth mentioning that the Earth's magnetic field. The Earth's magnetic field is the umbrella that protects the Earth's atmosphere, water, and life.

Without a magnetic field, there would be no life on Earth. Regarding the ** of the Earth's magnetic field, it was once thought that there is a huge magnet inside the Earth, which is itself magnetic. But this claim was later disproved on the grounds that objects lose all their magnetic properties at temperatures above 700 degrees.

The temperature inside the Earth reaches several thousand degrees, so it is impossible for there to be magnets. Most scientists now believe that there are three factors that contribute to the Earth's strong magnetism: (1) the Earth is massive enough, (2) the Earth is rotating fast enough, and (3) there is high temperature liquid iron in the Earth's interior (which is the main reason for the weight).

The liquid iron in the earth's interior will flow due to the rotation of the earth, and in the micro**, the electrons of the iron atoms will be squeezed out due to high temperature and high pressure and become free electrons. It can be said that under high temperature and high pressure conditions, liquid iron has actually become a plasma state of recharge, and a strong current can be formed by the slightest external action. The rotation and revolution of the earth are not completely uniform, which is an important external effect**, and the rotation and revolution of the earth are not completely circular motion, which also causes strong electric currents.

I learned from junior high school physics that as long as there is an electric current, there will be a magnetic field! Because the Earth is massive enough, its internal pressure and temperature can be high enough to form this plasma state of liquid iron. It is also because of the movement of the earth that this layer of liquid iron forms an electric current.

Speaking of the atmosphere, everyone knows the composition of the earth's atmosphere, so I don't need to say more. But this was not the case a long time ago, billions of years ago on Earth, there was no nitrogen, oxygen. The main thing is methane, which is the most important factor in the formation of primitive life.

During that period, lightning and thunder were common, and methane underwent chemical changes under the action of long-term, intense electric currents. In the end, it becomes amino acids, and amino acids become proteins under various complex physical and material actions. Proteins are the basic conditions for the formation of life, and even a single life organism (prions) can be formed.

You may have heard that "the ocean is the cradle of life", but let me tell you, the atmosphere is also the cradle of life! Of course, in addition to the oceans and atmosphere, the emergence of life must not forget a more important factor, that is, the sun.

When it comes to the earth, you can't talk about the sun without it. The sun binds the earth like a traffic policeman, and does not let the earth get too close to itself, and also makes other celestial bodies in the solar system walk in a regular manner.

Also to mention Jupiter, astronomers liken Jupiter to Earth's bodyguards, because Jupiter can attract small bodies close to Earth. Because Jupiter is large and massive, it can suck out some foreign comets and asteroids like a vacuum cleaner. That's why I like Jupiter.

It is recommended to go directly to Wikipedia...

The highest mountain is Mount Everest.

The knowledge about the earth has a name**, an introduction to the environment, the origin of the earth, the structure of the earth, and the evolution of the earth.

1. The ** of the name

The name "earth" can be traced back to the ancient Greek scholar Aristotle's proposal of the name "earth" from the philosophical "perfection" and mathematical "equilibrium" of the sphere.

2. Environmental introduction

The Earth belongs to the solar system in the Milky Way, between Venus and Mars, and is the third closest planet to the Sun in the solar system, with a natural satellite. Earth was the first planet to be discovered with a living individual.

3. The origin of the earth

According to the location of the earth's formation, the origin of the earth is divided into two schools: the traditional school believes that the earth was formed within the solar system; The modern school of thought holds that the Earth was formed outside the solar system.

4. The structure of the earth

The Earth's surface is divided into several hard parts, or plates, that move around the surface in geological cycles. About 71% of the Earth's surface is oceans, and the rest is divided into continents and islands. Liquid water is necessary for all known life, but does not exist on the surface of all other planets.

The Earth's interior is still very active, with a thick mantle, a liquid outer core and a solid iron core.

5. The evolution of the earth

In different geological periods, the geological processes are different and the characteristics are different. In various geological periods, the major events that occurred in the cosmic space related to the earth and the solar system and the earth have left records in the earth itself, crustal movements, strata, rocks, tectonics, paleontology, paleomagnetism, paleoglaciers, paleoclimate and other aspects.

Summary. Hello dear <>

We'll be happy to answer for you. The knowledge of the earth has: The knowledge about the earth has:

1. The Earth is the third planet from the Sun and the only celestial body known to nurture and support life. 2. The surface of the earth is approximately a land mass of continents and islands, and the rest is covered by water, mostly by oceans, bays, and other saltwater bodies, but also by lakes, rivers, and other fresh waters, which together form the hydrosphere. 3. The Earth's atmosphere is mainly composed 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. 4. The gravitational pull of the Earth interacts with other objects in space, especially the Moon, which is the only natural satellite of the Earth.

5. 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.

Knowledge about the earth.

Hello dear <>

We'll be happy to answer for you. The knowledge of the earth has: Zaomin's knowledge about the earth has:

1. The Earth is the third planet from the Sun and the only celestial body known to nurture and support life. 2. The surface of the earth is about a land of continents and islands, and the rest is covered by water, mostly by oceans, bays, and other bodies of saltwater, but also by lakes, rivers, and other freshwaters, which together form the hydrosphere. 3. The Earth's atmosphere is mainly composed 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. 4. The gravitational pull of the Earth interacts with other objects in space, especially the Moon, which is the only natural satellite of the Earth.

5. 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 third planet from the Sun, and Sun Xiang is the only celestial body known to mankind that nurtures and supports life. The surface of the Earth is roughly a land mass made up of continents and islands. The remainder is covered by Kaiqing water, mostly by oceans, bays and other saltwater bodies, but also by lakes, glaciers, rivers and other freshwater bodies, especially glaciers, which together form the hydrosphere.

Most of the Earth's polar regions are covered in ice. The Earth's outer layers are divided into several rigid tectonic plates that migrate to the surface over millions of years, while the interior remains active, with a solid iron core, a liquid outer core that generates the Earth's magnetic field, and a convective mantle that drives plate tectonics.

Earth, the third planet from the Sun, is the only known living body in the universe. It is the densest planet in the solar system and the largest of the four terrestrial planets. According to radiometric dating and other evidence**, the Earth formed about 100 million years ago.

The Earth's gravitational pull interacts with other objects in space, especially the Sun and the Moon, and is the only natural satellite on Earth. In its orbit around the Sun, the Earth rotates more than 365 times around its axis; Therefore, the age of the earth is about a day long. The Earth's axis of rotation tilts, creating seasonal changes on the Earth's surface.

The gravitational interaction between the Earth and the Moon causes ocean tides, stabilizes the direction of the Earth on its axis, and gradually slows down its rotation. The Earth's lithosphere is divided into several rigid plates, which migrate to the surface over millions of years. About 71% of the Earth's surface is covered by water, and most of it is covered by oceans.

The remaining 29% is made up of land made up of continents and islands, which together have many lakes, rivers and other water sources that contribute to the hydrosphere. Most of the Earth's polar regions are covered in ice, including the sea ice of the Antarctic and Arctic ice caps. The Earth's interior remains active, with a solid iron core, a liquid core that generates the Earth's magnetic field, and a convective mantle that drives plate tectonics.