The earth's rotation is gradually slowing down. What happens when the earth stops or reverses?

Coastline depicts the spatial range between land and sea, which is the most basic outline of the earth. At present, the shape of seawater is produced by the gravity brought by the earth's rotation at the speed of 1667 km per hour. The sea water near the equator expands the equator, so the earth becomes an ellipse of the equator.

If the earth stops rotating, it means that gravity will disappear, and gravity will decide the appearance of new terrain alone. The huge sea water body (now 8 kilometers high in the equatorial belt) will move to the place where the gravity of the earth is strongest, and the sea and land will be reshuffled.

Time has become "slow"

According to foreign media reports, after long-term data research, the earth is "braking" itself. It is estimated that after 65,438+000 years, the daily time will increase by 65,438+0.8 milliseconds. In 200 million years, there will be 25 hours on earth every day.

Kevin Luhmann, an astrophysicist at Pennsylvania State University, said: "There is no doubt that our earth has been rotating in the current direction almost all the time, but the speed has changed obviously with time. When the earth was born, it took about 6 hours to rotate for one week, so it was only 6 hours a day. "

Einstein said that when an object approaches the speed of light, time will slow down. In fact, due to the slowdown of the earth's rotation, the time of day on the earth is slowing down, not approaching the speed of light, but this change is too small to be noticed.

If the rotation speed of the earth slows down or even stops completely, the time of day and night on the earth will change and time seems to be slowing down.

Terrible inertia

In the next few billion years, the possibility that the earth will stop rotating is almost zero. However, if the earth stops suddenly, great inertia will make all objects on the ground continue to move at high speed along the tangent direction, and all objects on the earth that are not attached to the bedrock of the earth will fly into the air, which means humans, rocks, land, trees, buildings, pet dogs and so on. Will be sucked into the atmosphere.

In addition, the earth's magnetic field that protects us from high-dose radiation in outer space will also fail.

The earth will become a perfect sphere.

The earth's equator is slightly raised because of the current rotation speed of the earth. The earth will bulge at the equator and the ocean because of its rotation, and it will become a perfect sphere without the influence of rotation.

After the earth becomes a regular sphere, the world's oceans will be redistributed, creating a supercontinent around the equator, and the north and south poles will become oceans, when a large amount of seawater will flood many areas of the earth.

The result of the earth reversal is even weirder.

First of all, the earth's magnetic pole will reverse, and the sun will definitely rise in the west-which may kill all migratory animals and birds that use magnetic fields to navigate. The crust may also disintegrate, and folded mountains like the Himalayas will shrink as the folds slowly open.

At the same time, the Coriolis effect that controls climate patterns, ocean currents and equatorial easterly winds will also be reversed. Peter Gibbs, a meteorologist from the BBC, participated in the experiment to verify this idea. He concluded that the Coriolis effect and the reversal of trade winds will turn the jungle into a desert and the desert into a jungle.

The slowdown of regional autobiography comes from the locking effect between planets. At present, the moon has been locked by the region, resulting in never seeing the back of the moon on earth.

If the earth is finally locked by the sun, there will be a phenomenon that one side of the earth will always be daytime and the other side will always be dark.

But for the distance relationship between the sun and the earth, it takes about 7.5 billion years for the sun to lock the earth. In 7.5 billion years, the sun became a red giant early, and the earth's orbit was swallowed up by the sun at that time. Don't worry so much about what will happen in billions of years.

The earth's rotation is gradually slowing down. What happens when the earth stops or reverses?

There are two situations described by the subject, one is tidal locking, and the other is really stopped. Both situations have their advantages and disadvantages, but tidal locking seems to be even scarier. Let's explain tidal locking first: The distance between the celestial body and its parent star is too close, which causes the celestial body to rotate more and more slowly under the tidal gravity of the parent star until it coincides with the revolution time. After tidal locking, the celestial body still rotates, but one side always faces the home star!

Tidal locking diagram of the moon being eclipsed by the earth. If the earth is tidal locking by the sun, there will be a permanent sun on one side and a permanent night on the other, and the position of the sun will hardly move in the sky, which will lead to extremely serious consequences:

First, because only one side of the earth is heated, it will lead to the intensification of atmospheric convection, the occurrence of super storms will be more frequent and the intensity will be unprecedented. The super-strong category 5 hurricane now may just be the gentlest breeze in the future!

Second, on the other side, the eternal night will become another cold pole. The thick ice layer will far exceed the ice layer thickness of the North and South poles, and the North and South poles can still shine once a year. The night after tidal locking will be dark, and there will never be a day, only the cold starlight of the Milky Way will be sprinkled on the cold ground.

Third, people's living habits will migrate from the cold pole of the eternal night to the eternal day. Man is also a phototropic animal. Night is always disturbing, but a direct area may be unbearable, but most of the surrounding areas are still habitable. In addition, the arable land area of the earth will suddenly shrink 1/2 or even 2/3, but crops will not be affected by night, the output will increase, and food production may be chaotic.

Another serious situation is that the earth has stopped turning. Of course, what we are talking about here is slow stop, not instantaneous stop, otherwise the consequences will be more serious! When the earth stops rotating, it takes 1/4 years for the sun to climb to the zenith, and then 1/4 years to go down, and then it will be dark for half a year. This situation is even more unacceptable, because this half-year night will be an inhuman day, because the weather will become extremely cold after the sun goes down, and it will last for half a year, because all areas are like this and there is nowhere to go. Or become a daily floating population.

Of course, at the current rate of the earth's rotation reduction, the future is still very long, so you don't need to worry. The realization of nuclear fusion in the future will make life less sad. At least we can move into space or make an artificial sun on the other side of the night. ....

The earth suddenly stops, just like getting on a car with a speed of 480 kilometers per hour and suddenly stopping in the same place. I don't know how many people can suddenly fly away from the earth and fall to death. Tall buildings and bridges collapsed because they could not bear it. I don't know how high the sea can rise, resulting in a tsunami. Reversal is when the sun rises in the west!

If the earth's rotation stops, there will be no sunrise or sunset, some places will always be day, and some places will always be night. On the other hand, the sun will rise in the west and set in the east. When the earth stops rotating, the geostrophic deflection will disappear. Our most intuitive experience is that there is no whirlpool when the bathroom flushes.

The earth's rotation is indeed slowing down, although it will never stop or reverse (under normal circumstances), but since it is asked, let's talk about why the rotation is slowing down. What's the impact of parking or reversing?

Why is the self-transformation slow?

An important reason is the moon. We all know that the moon has been tidal locking by the earth now, that is, its rotation is consistent with that of period of revolution. Every time we see the moon, it is on the same side.

But the moon also affects the earth. Hundreds of millions of years ago, the earth only had a few hours a day, and later it increased to about 24 hours now, but this process continued until the earth's rotation period was consistent with the period of revolution of the moon, and the mutual tidal locking was completed.

The earth will also be locked by the sun, but because the moon is close and tidal force is bigger than the sun, the earth and the moon will be locked first.

What is the effect of parking or reversing?

Stop: After the earth stops rotating, it will take half a year for the sun to rise and set in the west, which means that it is half a day and midnight in most parts of the earth.

Not to mention the four seasons, half a year's day and night alone is enough to make the ecosystem collapse. The temperature on the sunny side rises and the temperature on the shady side drops. Although there is atmospheric heat insulation, we can also roughly refer to the temperature difference between the front and back of the moon: about 300 degrees Celsius.

Reversal: If the current rotation direction gradually turns into reversal (if the speed of change is too fast, you can refer to the sudden braking of high-speed buses and the situation of people on board), then you will inevitably go through the process of stopping, and the ending will refer to the previous article "Stop".

Looking forward to your comments and attention!

A: The earth's rotation speed is really slowing down. At present, it is about 65438+ million years, and the rotation period increases by 1 second. At this rate, it will take more than 4 billion years to slow down to half the current rate.

The main reason for the slow rotation speed of the earth is the tidal action of the moon on the earth, which causes friction between the solid part of the earth and the seawater part. This process will consume the kinetic energy of the earth's rotation and convert it into internal energy, which will slow down the earth's rotation speed.

Of course, this process is quite slow. According to scientists' calculations, the current speed of the earth's slowdown is: the rotation period increases by 1.8 milliseconds every century, which is equivalent to 65438+ million-year increase 1 second.

If the time is long enough, the earth will be tidal locking by the sun, just as the moon is tidal locking by the earth. This process will take at least 654.38+0 billion years, and in any case, it will not wait for that day, because by then the earth will have been swallowed up by the sun.

We can boldly assume that, as a result, the earth was tidal locking by the sun. At that time, the earth always faced the sun. In the science fiction movie Star Trek, there is a similar civilized planet:

(1) facing the sun, the annual temperature is as high as 100 degrees Celsius, and the highest point exceeds 200 degrees Celsius;

(2) On the side facing away from the sun, the annual temperature is below-100 degrees Celsius, and the surface is covered with thick ice;

(3) Then there is always a critical area, and the annual temperature is maintained at about 0 degrees Celsius. If there was civilized life on the earth at that time, this area was the active area of life, and the earth civilization was concentrated in this area, and most buildings would be located underground;

(4) The four seasons of the earth will still exist, but they are not as distinct as before. It is colder in winter and hotter in summer.

(5) Due to the large temperature difference between the two sides of the earth, the air flow in the transition area is strong, and lightning and strong winds continue all the year round;

(6) At that time, the moon was far away from the earth, and the tidal phenomenon of the earth almost stopped;

The earth, sun, moon and stars created by Almighty God have been running at a speed of 30 kilometers per second for thousands of years. God created everything and is in charge of everything. Everything comes from him and belongs to him.

When the earth stops looking at the stars, it flies to the back of the earth, and vice versa.