At night, the sun doesn t release energy to the earth, right?

There is a morning and dusk circle in the world, so the earth is divided into day and night, and the area of the night arc is night, and the place where the day arc is day, so when it is night here, the place of the day arc is still day, and the sun still releases energy to the area of the day arc.

Therefore, this is dialectical, and it can only be said that at this time, at night here, the sun does not release energy here.

I always feel that the energy comes from the earth itself, and it is the other stars that channel, transform, and balance them, and life is changing.

Changing energy. If you get it right, it's smooth. If you are wrong, you will suffer.

Wrong!! At night, the sun just turns to the other side of our planet. We don't feel the energy released by the sun, that's all.

That's not right! Night is only relative, and half of our planet is always exposed to the sun's radiation! It feels like the sun is gone just because we have turned to the side with our backs to the sun!

The questions raised by primary school students were patiently explained by so many teachers;

The sun releases energy to the earth every moment.

It's night on one side of the earth, it's daytime on the other side, and half of it receives solar radiation. Therefore, the sun is releasing energy to the earth all the time.

The temperature of the Earth's core has existed since its birth 4.5 billion years ago, and the movement of plates on our Earth's surface,**, volcanic activity, geomagnetic changes, etc., are all related to the movement of the Earth's core. It is precisely because the interior of the earth is a liquid world that there will be various ecological changes on the surface of the earth, and the current ecological environment will be born.

The energy of the earth comes from the heat energy of the earth's interior, which is very strong and very energetic.

The energy of the sun comes from the nuclear reaction fission in its solar body, because nuclear reaction fission produces a lot of energy.

Is it true that the sun is able to provide a steady stream of energy to the earth around the clock? Yes.

Everything grows on the sun. The Sun is a huge, hot gas planet that continuously radiates energy into space in the form of electromagnetic waves. The energy that reaches our earth is equivalent to about 1 billion of the total radiation of the sun, and the energy that the sun sends to the earth every minute is about equivalent to the heat produced by burning 400 million tons of bituminous coal.

The hot sun, with its core temperature of up to 15 million yuan, is also extremely pressurous, with 250 billion pascals. Under such high temperature and high pressure conditions, a nuclear fusion reaction is produced, that is, the fusion of 4 hydrogen nuclei into 1 helium nucleus. In this fusion process, the sun loses some mass and releases a lot of energy.

It is this energy that makes the sun shine. The sun loses about 4 million tons of mass per second due to nuclear fusion. At this rate of consumption, the Sun has consumed only 0 03 masses over the past 5 billion years.

Astronomers estimate that the sun has a lifespan of more than 10 billion years, and it is currently in a stable and vigorous middle age. When 1 gram of hydrogen is converted into helium on the sun, the energy released is equivalent to burning 15 tons of oil in a steam shed, and the sun converts 500 million tons of hydrogen into helium every second. Hydrogen on the sun accounts for 42 percent of the total weight, so how much hydrogen is left on the sun today?

There are also 100 billion billion billion tons, and the chain is pure, and it can also "burn" more than 10 billion years.

Because the sun is very far away from the earth, and it takes 8 minutes for the rays of light to reach the earth, it takes 8 minutes for the rays from the sun to reach the earth in the morning.

Because there is a distance between the earth and the sun, this distance requires light to fly for 8 minutes to reach.

The speed of light c = the distance between the sun and the earth d = the time for the sun to reach the earth d c is about 499 seconds so it takes eight minutes for the sun's rays to reach the earth in the morning.

The sun provides light and heat energy for the earth, which is solar radiation.

The light energy of the sun produces photosynthesis for the plants of the earth.

Fill the earth with life, make the atmosphere.

Rich in oxygen to provide breathing for the animal**. At the same time, animals can see the light, understand the world, and humans can create civilization.

In addition to light energy, there is also heat energy. Heat energy brings warmth to the earth, and life on the earth can survive and grow. Heat melts snow and ice, creating currents that flow into rivers, lakes and seas. All the creatures of the earth are nourished.

It is "sunshine and rain" that makes the earth vibrant and turns into a beautiful world of thousands of purples and reds.

Nowadays, humans use solar energy to generate electricity, heat, and produce. Sunshine is the light and hope of mankind!

But the ultraviolet rays in the sun.

and the solar wind.

It also harms the Earth, the solar wind blows away the atmosphere, and ultraviolet rays ionize the atmosphere. Fortunately, the Earth has a magnetic field that blocks the solar wind, both blocking cosmic rays and retaining the atmosphere.

Light. It is precisely because of light energy that there are all kinds of weather, wind, and heat energy on the earth. Plants will grow, and there will be oil. Creatures can survive.

The energy that the sun shines on the earth will be absorbed by the atmosphere () silver cloth cavity blade.

a.That's right. b.Wrong limbs.

Correct Answer: a

Dark. Olbers was a 19th-century German astronomer and physician. During the day, he practiced medicine and at night he observed the stars.

He discovered 5 comets and proposed the theory of comet tail formation. However, he proposed a paradox that has not yet been rationally explained. Olbers pointed out that according to the static, uniform, infinite model of the universe, the sky is scattered with an infinite number of evenly distributed luminous stars, and although the farther away the individual stars become, the brighter the individual stars become, but given the sum of the illumination of all stars at any point in the universe, and the occlusion effect of the near stars on the stars behind, the whole sky is as bright as the sun, while in fact the night sky is dark.

This is the contradiction between theory and practical observations. To put it simply, the night should be the white night. Long before Olbers, another German astronomer, Kepler, believed that if there were infinitely many stars in the sky, the sky should be bright at night.

Whether it's Obers or Kepler, they ask questions, but they can't ask them. There must be a reason why theory and practice contradict each other. But don't know what's the problem?

To solve the Olbers paradox, astronomers have come up with a variety of theories to explain it, but none of them can justify it. To this day, it remains a mystery to solve. Some astronomers believe that there is light-absorbing material in the starry sky, and the light-absorbing material absorbs the starlight from the star, making the sky black; Others believe that Olbers's theory is based on the calculation of the uniform division of stars in the universe, but in reality the distribution of stars is not uniform, with some regions having more stars and others having fewer stars.

Therefore, there are light and dark areas in the universe, and the earth is in the dark zone, so the sky is dark. It has also been argued that Olbers's paradox is correct, but Olbers assumes that stars are always there to shine, and that in fact some stars are "dead" and no longer emit light. The light emitted by distant stars before they "die" has not yet reached Earth, so the starry sky on Earth is dark.

Some people use the big ** theory to explain this phenomenon, and after recognizing the limb as big**, Xu Qinglao multi-nebula appeared, which gradually condensed into various celestial bodies, the universe continued to expand outward, and a large number of stars moved away from the earth, and the light of these stars could not reach the earth. So, the starry sky seen on Earth is dark. It seems that these theories have all the truth, but they do not explain the Olbers paradox very well.

Olbers argues that the idea that the universe is infinite is unscientific, and that if the universe were infinite, there would be no dark zones between stars, and the sky above the earth would not be dark, and it would be much brighter than during the day. But modern astronomy tells us that there is no end to the universe. If there is an end, what is the end?

It has been more than 100 years since Olbers's paradox was proposed, and despite many significant advances in astronomy, there is still no calendar that can provide a scientific answer. Since the question of white night and night on earth cannot disprove the Orbers theory, the only way is to find the ultimate factual basis to explain this contradiction. It seems that the only way to wait is the 21st century.