Is it true that solar activity follows the same cycle as atmospheric precipitation?

In high school geography books, it is written that solar activity is related to precipitation, but there is no direct relationship, sometimes the precipitation is the highest in several years when solar activity is frequent, and sometimes the precipitation is the lowest in several years, but the impact does exist, there is a chart, which cannot be passed on here, and you can understand it by comparison.

Sunspot flare solar wind (occurs in the photosphere, chromosphere, coronal parts respectively!) Inside-out order).

Answer]: A polar day and polar night only occur in the Antarctic and Arctic Circles"-3 When there is a polar day at the South Pole, there is a polar night at the North Pole, and vice versa. Because the axis of rotation of the earth is tilted and oblique, when the earth rotates, there is a spring equinox to the autumn equinox, the North Pole appears polar day, the South Pole appears polar night, the autumn equinox to the next year of the spring equinox, the South Pole appears a period of polar day, and the North Pole appears the phenomenon of polar night.

Exclude item c. The alternation of day and night on Earth is the result of the Earth's rotation and has nothing to do with solar activity. Exclude item b.

A total solar eclipse is a type of solar eclipse, an astronomical phenomenon in which the sun is completely obscured by the moon. The occurrence of a total solar eclipse is not the effect of solar activity on the Earth. Exclusion D.

The stream of charged particles thrown out by the sun's atmosphere can disturb the earth's magnetic field, producing a "magnetic storm" phenomenon, which makes the magnetic needle vibrate violently and cannot correctly indicate the direction. Therefore, the topic is selected A.

Astronomers have been thinking about the Earth's water resources.

The debate has changed many times over the centuries, but one thought has hardly been considered: it comes from the sun.

However, while this may seem unlikely, this is a point made by some scientists in a new article published in Nature Astronomy.

Although there is a lot of hydrogen and oxygen in the material that formed the Earth, it is thought that most of the hydrogen and oxygen escaped early in the Earth's evolution, while the oxygen was trapped in the rocks.

Any water must have arrived after the process of dispersing the earlier hydrogen had passed.

Professor Phil Brand of Curtin University said: "The existing theory is that water was brought to Earth at the final stages of the formation of type C asteroids, however, previous isotopic 'fingerprint' tests of these asteroids have found that they do not match the water levels found on Earth, meaning that there is at least one other unaccounted for**." ”

The solar wind blown by the sun contains a lot of ordinary hydrogen, but very little deuterium.

Dr. Nick Timms of Curtin University told the journal IFL Science that the same low-deuterium water was found on the asteroid Itokawa visited by the Woodbird mission, but only in a very thin layer on the surface.

At deeper depths, the concentration of deuterium is closer to that of an asteroid farther from the Sun.

Timms and co-authors propose that this hydrogen reacts with oxygen on the surface of asteroids within our solar system to form an unusually thin but water-rich layer.

For a large asteroid like Itokawa, this has a negligible effect on the entire object – but smaller objects, especially dust particles, have very different surface area-to-volume ratios.

When these materials reach the Earth, they bring water with them, diluting the deuterium content in our oceans.

The authors calculated that between 56% and 72% of the Earth's water comes from this previously neglected **.

"Without it, the Earth wouldn't be the water-rich world we know it is," Timms said. ”

Other celestial bodies in the inner solar system must have been exposed to the same water-rich rain of dust, the authors say.

The fact that Mars once had oceans but then disappeared suggests that most of the dust attached to the planet early on was long insufficient to compensate for the rate of water loss on Mars.

This coincides with our model, which proposes a dusty early solar system.

However, lead author Dr. Luke Daly said: "This means that astronauts may be able to get fresh water directly from the dust on the surface of planets such as the Moon**." ”

Some of the authors of this article were initially skeptical of an idea that was so different from what had been previously proposed, but they "jumped on board and confirmed that our data was correct." ”

The outer layer of the meteorite burned up during its descent through the atmosphere, so it cannot be used to verify Itokawa's measurements.

However, the team has obtained samples of Hayabusa-2 from the Ryukyus and will seek to study rocks recently collected from the surface of Bennu to see if these rocks also contain a surface layer of low-deuterium water.

The 24 solar terms are based on the 1 cycle of the earth's revolution around the sun as a cycle.

Due to the rotation of the earth, the earth rotates around the sun constantly called the earth's revolution, and the earth has been constantly rotating from west to east, and the 24 solar terms are manipulated by external factors. Observe on Earth.

The temperature of a certain plane on the earth is related to whether the sunlight is direct or oblique. So 24 hours is determined by rotation. Since the Earth's axis of rotation is not perpendicular to the plane of the Earth's orbit, the Earth's orbit is approximately an ellipse, and the Earth's four seasons are determined by its revolution.

The phenomenon of the earth's rotation: the moon orbits the earth for about 29 days, but China's 20 potatoes and four solar terms are unique, because of the earth's rotation axis and the orbit of the earth, so the division of the 24 solar terms in a year is based on the earth's revolution.

The origin of solar terms

China's astrological culture has a long and profound history, and the ancients began to explore the mysteries of the universe very early, and thus deduced a complete and profound stargazing culture. The 24 solar terms were originally formulated according to the rotation direction of the handle of the Big Dipper (Dou Zhuxing Xingxing), and the Big Dipper rotated in cycles, which has a close relationship with the change of seasons.

The Big Dipper is composed of seven stars, including Tianshu, Tianxuan, Tianji, Tianquan, Yuheng, Kaiyang, and Shaoguang, and is named because the Big Dipper is tortuous. The Big Dipper is an important astrological phenomenon in the Northern Hemisphere (China is located in the Northern Hemisphere), the Big Dipper rotates in cycles, and the natural rhythm of the corresponding region in the Northern Hemisphere is also gradually changing when the stars are moving, so it has become the basis for ancient people to judge the changes of the seasons.

The "24 solar terms" are specific seasons in the Ganzhi Excavation Calendar that indicate changes in natural rhythms and establish the "December Tsuki" (Lunar Order), which is based on the "24 solar terms". The Ganzhi calendar divides the year old (seti) into 12 Chens (December Jian, December Order), and calculates the monthly order with the operation of the Big Dipper, and the Chen referred to by the bucket handle is called "Doujian" (also known as Yuejian).

The four seasons of the year and the 24 solar terms are scientifically summarized according to the different positions of the earth when the sun moves around the source, different angles, different parts of the earth where the sunlight hits the earth and the different degrees of sunlight intensity (aThe law of climate change).

a.Laws of climate change bEvil and auspicious days cThe law of spatio-temporal transformation.

a. Flares. Occurs in the chromosphere, which is the most intense indication of solar activity, so it is correct;

b. Sunspots. It occurs in the photosphere, which is a sign of the strength of solar activity, so it does not fit the topic;

c. Solar wind.

It occurs in the corona and has no direct effect on the strength and intensity of solar activity, so it is in line with the topic.

d. The solar eruption occurs in the chromosphere, which has no direct effect on the intensity and intensity of solar activity, so it does not conform to the theme of ignition

Therefore, a

The sea water rotates with the rotation of the earth, and the rotating objects are subjected to a force that makes them tend to leave the center of rotation, just like rotating an open umbrella, and the water droplets on the umbrella are about to be thrown out. At the same time, the sea water is also attracted by the moon, the sun and other celestial bodies, because the moon is closest to the earth, so the moon is more attractive. In this way, the seawater forms a tidal attraction under the combined action of these two forces.

Because the earth and the moon are constantly moving, the relative positions of the earth, the moon and the sun are changing periodically, so the gravitational force is also changing periodically, which makes the tidal phenomenon occur periodically. In one day, except for the north and south poles and individual regions, the tides rise and fall twice in each day, each time for 12 hours and 25 minutes, twice a day, a total of 24 hours and 50 minutes, so the time of tide rise and fall is delayed by 50 minutes every day. Most experienced people who live by the sea can calculate when the tides occur.