Is it possible that the Earth s seasons and the moon s phases change because the Earth is too far aw

The first question, I think that if the earth and the sun are close enough, there should be no day and night, because even refraction is enough to make the earth bright, of course, the four seasons are gone, the surface of the earth will be tens of thousands of high temperatures, how can there be four seasons, and about the moon's roundness, I think that under such a strong light, if people can really survive, the naked eye will not be able to see the moon

The second question, if idealized, should be correct, since we have thought of the problem so idealized, it can be proved by experiments, using incandescent lamps and small round balls for experiments, but incandescent lamps are not as bright as the sun, but they should also have an effect Once the distance is far enough, no matter how strong the light is, it will not be able to shine, and beyond its range, of course, it will be dark.

Your question is very advanced, and it feels very correct, but to be honest, such an idealistic question, as far as you are concerned, doesn't make much sense right now, maybe it will be useful later, and it's good to think about it

If you draw a picture, you'll see that the light is shining on the earth in all directions, and there are still shadows.

No, the reason why we meet the four seasons is not because of the distance from the sun, but because the orbital plane of our earth has an intersection angle with the orbital plane of rotation, that is, the intersection of yellow and red. There is a diurnal variation because we are rotating.

Even if you are closer to the sun, as long as there is still a yellow and red angle, revolution and rotation.

There will still be four seasons and day and night, but we certainly won't feel it.

The second question may be true

That's a good idea, but I think the second question should be based on the convex lens principle.

No, the earth always receives sunlight on one side.

Good idea! It should all be right, if you are not a professional, you will not assert it!

The four seasons of the earth are caused by the fact that the earth's rotation and revolution are not in the same plane. The moon phase change is the manifestation of the light-receiving and back-lit sides of the moon's surface. It has nothing to do with the distance from the Earth to the Sun.

Numerically speaking, if the distance between the sun and the earth is zero, it is true that there will be a polar day, but zero distance means that the earth is a part of the sun, so the analysis is meaningless. When the distance between the sun and the earth is infinite, the sun's light is truly parallel, and the earth will be exactly half day and half night. It's not going to be all night.

In short, the side of the earth facing the sun is daytime, and the side facing away from the sun is night.

When the earth moves to the middle of the sun and the moon, the sun's rays are blocked by the earth, and the moon cannot reflect the sun's rays, and the moon cannot be seen on the earth, which is a lunar eclipse.

It is the position between the Sun, Earth, and Moon during a solar eclipse. During a solar eclipse, the Moon moves halfway between the Sun and the Earth and is in the same straight line. At this time, the sun's rays reach the earth and are blocked by the moon, and the sun's rays cannot be seen in the places on the earth that are blocked by the moon, which is a solar eclipse.

The sun, moon, and earth line up, with the moon and sun on either side of the earth. At this time, the moon phase is a full moon, which is around the fifteenth day of the lunar calendar.

During a new moon or a full moon, the Moon, the Earth, and the Sun are all in the same straight line, but their relative positions are different.

During the new moon, the moon is in the middle, and the earth and the sun are on either side.

When the moon is full, the earth is in the middle, and the moon and sun are on either side.

As shown in the figure below. <>

Moon phase chart.

On the 30th or 1st of the New Moon and the 15th or 16th of the New Year, these three are in the same straight line.

The Moon and the Earth are solid bodies, and the Sun is a gaseous body.

The Sun has the ability to nuclear fusion, the Moon and Earth do not.

The Sun and Earth have an atmosphere, the Moon does not.

The moon revolves around the earth, and the earth revolves around the sun.

There is life on Earth, but not on the Moon.

The Moon is tidally locked by the Earth, and the Earth is not tidally locked by the Sun.

The sun has the ability to emit light on its own, while the earth and the moon do not.

The sun has a lifespan, the earth and the moon do not.

The moon has an uneven distribution of matter, the earth and the sun are not.

The moon is a satellite, the sun belongs to the stars, the earth belongs to the planets, and they are all made up of the most basic atoms and molecules, and they are all in the same galaxy.

Categories: Science & Engineering.

Problem description: I just learned geography in the second year of junior high school, and I have some questions, I hope you will give advice. 1。The volume of the sun is 1,300,000 times that of the earth, so I can think so

If the sun is at zero distance from the earth (the premise of belief that the earth will not be vaporized), will there be no day and night changes on the earth, no change of seasons, and no cloudy and sunny moons on the earth? Because the excessively large sun can illuminate almost every corner of the earth and the moon, and it shines all year round, that is, all the earth's lunar surface is polar day throughout the year. And now the reason why the seasons change day and night is because the sun is so far away from the earth that the sunlight almost becomes a parallel light, and there is no angle.

Is the above idea correct? 2。And one more question:

Suppose that there is only one sun and one earth in the vast universe, and we adjust the distance between them from zero distance to infinity, will there be such a change: the earth will be completely bright at first, and then the dark part will gradually increase until it is completely dark? Is this the right assumption?

Analysis: The first question, I think that if the earth and the sun are close enough, there should be no day and night, because even refraction is enough to make the earth bright, of course, the four seasons are gone, the surface of the earth will be tens of thousands of high temperatures, and how can there be four seasons, and about the moon's roundness, I think that under such a strong light, if people can really survive, the moon cannot be seen with the naked eye

The second question, if idealized, should be correct, since we have thought of the problem so idealized, it can be proved by experiments, using incandescent lamps and small round balls for experiments, but incandescent lamps are not as bright as the sun, but they should also have an effect Once the distance is far enough, no matter how strong the light is, it will not be able to shine, and beyond its range, of course, it will be dark.

Your question is very advanced, and it feels very correct, but to be honest, such an idealistic question, as far as you are concerned, doesn't make much sense right now, maybe it will be useful later, and it's good to think about it

The reasons for the large temperature difference between day and night on the upper surface of the moon are:1There is no atmosphere on the surface of the moon, and during the day, the sun shines directly on the surface of the moon, and the solar radiation is not weakened, and the temperature is high; There is no atmospheric inverse radiation at night, and the surface of the moon loses more heat and the temperature is low, so the temperature on the moon does not regulate like the earth's atmosphere.

2.The rotation period of the moon is the same as the rotation period, and one day on the moon is equivalent to 30 days on the earth, which results in the fact that during the day, the sun shines for a long time and the temperature is very high, and at night there is no sun for a long time and the temperature is very low. 3.

The surface of the moon is bare rock, the specific heat capacity is relatively small, and the heating and cooling are relatively fast, which also causes the temperature difference between day and night on the moon to be larger than that of the earth.

Because the moon has no atmosphere, the surface illuminated by the sun is very hot, and the surface that is not illuminated is very cold, and the earth has an atmosphere, so the temperature difference is not very large, but the higher the atmosphere, the thinner it is, so this is also the reason why the mountain peaks have snow all year round.

It's because of the atmosphere.

The earth has an atmosphere, and part of the energy of sunlight is absorbed by the atmosphere, part of it is reflected by the atmosphere, and part reaches the ground. This is one reason. Second, the atmospheric circulation brings the sun's energy to all parts of the earth and disperses it, so that the temperature in one place does not rise too high, and the temperature in places where the sun does not shine is not too low.

Third, the atmosphere has the ability to store heat, and the heat accumulated in the atmosphere during the day will slowly dissipate at night, so that the temperature at night will not be too low.

The moon has no atmosphere, and the temperature of the moon's surface rises rapidly under direct sunlight. At night on the moon, the surface heat is not blocked by the atmosphere, and it will be quickly lost into space, causing the temperature to drop rapidly.

So the temperature difference between day and night on the earth is small, and the temperature difference between day and night on the moon is large.

The denser the atmosphere, the smaller the temperature difference between day and night. For example, Venus's atmosphere is denser than that of Earth, and there is basically no temperature difference between day and night on Venus.

Today, the moon is slowly moving farther away from the earth. This is because the current gravity may not be as good as it used to be. This has a great impact on the planet. The air at night will not be so good . And the moonlight will also become very low at night.

The impact should not be big, because I know that our leaders are working hard for our safety, and now that science is becoming more and more developed, I believe that no matter what problems we encounter, scientists can solve them, and at the same time, we must save resources and eliminate waste.

There are some situations that are not conducive to the development of the earth, and it is likely to lead to the destruction of the environment, and also lead to a huge change in the living environment of the earth.

Yes, it is possible to turn the earth into a global warming situation, and the temperature of the earth will get higher and higher, and there will be no more particularly cold weather.

This is due to tidal forces.

The earth rotates and revolves, and the direction of rotation and revolution is the same, then the speed of the part of the earth facing the sun around the sun is the speed of revolution minus the speed of rotation, the velocity becomes smaller, the centrifugal force becomes smaller, and the attraction of the sun to it is greater than the centrifugal force of its motion around the sun, so it will uplift.

The speed of the part of the earth that deviates from the sun around the sun is the speed of revolution plus the speed of rotation, the velocity increases, the centrifugal force becomes larger, and the centrifugal force of its movement around the sun is greater than the attraction of the sun to it, so it will also uplift, which forms the solar tide.

Due to the existence of the moon, the center of mass of the earth and the moon deviates from the center of the earth, and the center of mass of the earth and the moon is like a focus of the elliptical orbit for the matter on the earth, and the joint action of the earth and the moon forces the material on the earth to develop to the elliptical orbit when the earth rotates, so the part of the earth facing the moon and away from the moon will be uplifted, which forms the solar tide.

The tidal action of the Earth cancels out some of the force, and although this force is small, the Moon will be thrown out because of the angular velocity of rotation, a bit like the feeling of being thrown out of the car when we ride a bicycle and turn a corner. As the Moon farther and farther away, the Earth's rotation slows down, and when the Earth's self-transformation slows down, the Moon will be dragged back to the Earth. It is currently at the stage of the lunar principle Earth.

Speaking of the relationship between the sun and the earth, on the surface the two are getting closer and closer, because the sun is getting bigger, and on the other hand, the sun will emit a lot of energy because it burns itself, so the sun's influence on the earth is weakening. That is, the earth will be thrown out like the moon, so it may also get farther and farther away.

It's just a separate look at the relationship between the two, which is theoretically like this. In fact, there are many variables, such as a passing comet that can affect the balance of the entire interior of the solar system, similar to the butterfly effect, where a butterfly flapps its wings and forms a hurricane tens of thousands of miles away. The same is true for the trajectory of the stars in the universe, on the surface we can **, but in fact there are many variables.

For example, before the moon hits the earth, the sun may become a giant red star before the moon and engulf the earth, so there is no moon hitting the earth. Or the aforementioned external interference, such as the Milky Way being influenced by other galaxies outside to change its own rules, is possible.