-
I remember when I was a freshman in high school, there was a classmate who was very naughty, did the last row, laughed in the back every day, and was not serious in class, and once in geography class, he changed his classmates to look in the mirror and fiddle with himself, and the teacher saw it, and he was angry on the spot, rushed down and threw the mirror away, and scolded for a class.
As a result, the final exam scores came out, and no one expected that it would be the first in the whole grade of geography for that classmate!
And I was that classmate.
It's all about this in the first year of high school, if you don't remember, or you don't understand it, you didn't go to high school, etc., it's okay, I'll tell you.
1) Take a look at the picture below This is a map of the winter solstice in the northern hemisphere of the Earth, which means that the sun is shining directly in the southern hemisphere at this time.
Obviously, he's farther away from us, so the farther north you go, the colder it gets, and you can tell that the North Pole doesn't shine from the sun, and according to the actual survey, the North Pole is completely dark for about two to three months in winter.
And the closer you get from the North Pole to the equator, the longer the sun shines in a day.
2) If we get to the summer solstice, which is summer, the sun slowly turns to the position of the red circle like the picture, and it's the opposite: it's winter in the Southern Hemisphere, and it's dark in Antarctica.
-
That's because the sun is far away from us in winter, and because of the curvature of the earth, the days are shorter in winter.
-
Because the sun is southerly, the sun's trajectory in the sky during the day (the circle of the sun) can show less arc above the horizon than in summer, so the days are shorter.
-
In winter, the days are short and the nights are long. The altitude angle of the sun is small, and the trajectory of movement in the air is short.
-
Because the angle between the sun's rays and the ground at noon in winter is smaller, the sun spends less time on the horizon!
-
In winter, the days are short and the nights are long.
-
The setting of the sun is caused by the rotation of the earth.
1. The earth is a planet that revolves around the sun, and when it revolves around the sun, it is also constantly rotating, and the rotation of the earth produces our day when the sun rises and the sun sets.
2. This is because the earth always rotates from west to east around the earth, so that Doupei produces the natural phenomenon of rising in the east and falling in the west. So, when the Earth turns its back to the Sun empty-handed, the sun will go down.
Benefits of the Sun to Humanity:
1. Solar energy will not pollute the environment by producing exhaust gas when burning, like coal and oil, and it is not like coal and oil will run out one day. Moreover, there will be no danger and sequelae of nuclear power generation. It does not produce exhaust gases to pollute the environment.
2. The sun shines on our **, which will dilate the subcutaneous blood vessels, increase the blood flow, and increase the excretion and resistance of toxic substances.
3. **It can also produce vitamin D from some chemicals, such as ergosol, cholesterol, etc., under the exposure of sunlight. <>
-
The sunset is the sunset, and the reason for this is that the earth does not emit light and is not transparent, and the earth rotates from west to east.
The earth is a non-luminous and opaque sphere, and sunlight can only illuminate half of the globe at a time, half of the globe illuminated by sunlight is day, and half of the globe that is not illuminated by sunlight is night. The earth is constantly moving from west to east, resulting in the alternation of day and night (sunrise and sunset). From day to night, you can see the sun go down.
Since the Earth's axis is tilted, the length of day and night (the time of sunrise and sunset) is different in different parts of the Earth. In the north and south poles of the Earth, the sun shines obliquely throughout the year, and the length of day and night (the time of sunrise and sunset) varies the most.
In the high latitudes of the northern and southern hemispheres, there will also be a phenomenon that the sun does not set or does not rise all day long, that is, it is day or night 24 hours a day, which is the phenomenon of "polar day" and "polar night" in the polar region. At the North and South Poles, there are polar days and nights that last for half a year. During the polar day, the sun does not set for a day.
During the polar night, the sun does not rise for a day.
-
In winter, the sun goes down to the southwest.
The specific angle of the sun going down is as follows:
1. Between the spring and autumn equinoxes, the sun sets in the northwest. The further north you go, the more the sun goes down.
2. Between the autumn and spring equinoxes, the sun sets in the southwest. The further south you go, the more the sun goes down.
-
In terms of distance, from autumn to winter, the Earth is getting closer to the Sun, and the Sun is getting lower.
The Earth revolves around the Sun.
The orbit is an ellipse (ecliptic), and the Sun is located on a focal point of this ellipse, (not the center), so that during the orbit there will be a perihelion close to the Sun and an aphelion far from the Sun.
At the beginning of January, the Earth is closest to the Sun, 100 million kilometers, which is called perihelion. Autumn to winter is when the sun moves from aphelion to perihelion, so the closer the distance, the lower the sun.
However, since there is an angle between the ecliptic plane and the Earth's equatorial plane, the sun shines directly from autumn to winter.
Where the Sun shines directly on the Earth) moves towards the Southern Hemisphere, away from the Northern Hemisphere.
farther and farther away, so the Northern Hemisphere will get colder and colder. So there will be a situation where the sun is getting closer and closer, but the temperature is getting colder.
-
In winter, the sun is in the southwest of Zen Lu Min Mountain.
The specific angle of the sun going down is as follows: He Zhixia:
1. Between the spring and autumn equinoxes, the sun sets in the northwest. The further north you go, the more the sun goes down.
2. Between the autumn and spring equinoxes, the sun sets in the southwest. The further south you go, the more you go south.
-
The Sun (the central celestial body of the solar system).
The Sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.
The Sun is a star located at the center of the solar system, and it is almost an ideal sphere intertwined with hot plasma and magnetic fields. The diameter of the Sun is about 1,392,000 (kilometers, equivalent to 109 times the diameter of the Earth; It is about 1.3 million times the size of the Earth; Its mass is about 2 10 kilograms (330,000 times that of the Earth). In terms of chemical composition, about three-quarters of the mass of the Sun is now hydrogen, and almost all of the rest is helium, including oxygen, carbon, neon, iron, and other heavy elements with less than 2% of the mass, which uses nuclear fusion to release light and heat into space.
The Sun is currently passing through the local interstellar cloud in the local bubble of the Orion Arm at the inner edge of the Milky Way. At a distance of 17 light-years from Earth, there are 50 of the closest star systems (the closest star to the Sun is a red dwarf called Proxima Centauri, about light-years).
The Sun is a yellow dwarf (spectrum G2V), the lifespan of a yellow dwarf is roughly 10 billion years, and the Sun is currently about 100 million years old. In about 50 to 6 billion years, the Sun's interior will be almost completely depleted of hydrogen and the Sun's core will collapse, causing the temperature to rise, a process that will continue until the Sun begins to fuse helium into carbon. Although helium fusion produces less energy than hydrogen fusion, it is also hotter, so the outer layers of the sun will expand and release a portion of the outer atmosphere into space.
At the end of the process of turning to new elements, the mass of the Sun will decrease slightly, and the outer layers will extend to the current orbit of the Earth or Mars (at which point the two planets will be farther away from the Sun due to the decrease in the mass of the Sun).
-
In fact, the sun does not go down, because the earth rotates, so that our eyes are off the sun, and because there are many obstructions, so that we can't see the sun, such as the mountain, so we say that the sun goes down, in fact, it is still hanging there, but when the earth rotates, the sun turns to another place.
-
1. When the earth is constantly rotating from west to east, the phenomenon of the sun rising in the east and setting in the west will occur on the earth. When the Earth turns its back to the Sun, you will see the sun set;
2. Because the earth is rotating, the line of sight is away from the sun and there are many obstructions, so that the sun cannot be seen, but when the earth rotates, the sun turns to another place.
-
The sun doesn't go down, how do you sleep? The earth is round, and the sun is needed on that side.
-
Because it is only when the sun comes out that the temperature rises.
I don't know if you've ever been exposed to derivatives, or calculus.
Generally speaking, the hottest time of the day is not noon, but the change in ambient temperature at 1-3 p.m. = heat obtained from sunlight - heat lost to the Earth's atmosphere after a night of heat dissipation, the surface temperature is relatively low, and the speed of heat provided by the rising sun is not enough to offset the speed of heat loss due to the angle, so it is the coldest at this time.
Of course, if you say it's winter, then another likely reason is that the melting of snow and ice sublimates and absorbs heat, which cancels out the heat of the sun, and the ground is covered with snow that will increase the reflectivity, and the heat obtained from the sun is smaller.
-
Because there is ice or frost at night in winter, the ice or frost begins to melt when the sun first comes out, and the melting requires heat absorption, so the air is cooler.
-
Why is the sun warm in winter.
-
Hehe, let me answer it for you!
Why does the sun go down every day? The problem is very simple, the main reason is that the sun uses gravity to push the earth around him (please refer to Einstein's general theory of relativity for details), and the rotation is about a little more than 365 days, and that extra 4 years can just make up one day, so there are leap years and leap months, that is, 366 days. Let's get down to business!
While the earth rotates around the sun, the earth itself rotates there, so there is a "day" with a 24-hour day. And when the earth rotates, there must be one side facing the sun and therefore being exposed to the sun, and one side facing away from the sun, so it is not being exposed to the sun, so you will see day and night. On Earth, because the Earth's rotation speed slows down, you don't feel that the Earth is rotating, and the Sun is too far away from the Earth, you will see that the Sun is smaller than the mountain, so the ancients believed that the Sun revolves around the Earth or that the Sun is going down the mountain like humans.
So, there was a "The sun is going down!" This sentence.
It's a bit more complicated. Pure hand play, I hope it helps you!
-
Because the earth is turning every day.
Dryness: The enemy of winter is divided into epidermis, dermis and subcutaneous fat. The outermost layer of the epidermis is the stratum corneum, due to the water absorption and barrier function of the stratum corneum itself, as well as the natural moisturizing factors contained in the stratum corneum, namely amino acids, lactates and sugars, etc., so that the stratum corneum maintains a certain water content and maintains the moisture of the first level. >>>More
I think you're definitely not warm enough. Wear cotton shoes in winter, and if you wear autumn shoes in winter, then you will definitely be cold, which is the simplest truth. >>>More
The main components of the solar atmosphere are hydrogen (about 71% by mass) and helium (about 27% by mass), with 2% of other components. The sun's energy comes from nuclear fusion reactions, and the sun's hydrogen and helium can sustain the sun's nuclear fusion reactions for about 10 billion years, which means that the sun can burn for about 10 billion years, and the burning material is hydrogen and helium. The mass of the sun is huge, the sun loses about 4 million tons of mass per second, but it is insignificant for a huge solar mass, so the sun can burn for quite a long time. >>>More
It's a long one down there, but I'll say it, it's mainly for survival, ants build nests, and when it's not raining, they're usually in a cool and dry place, but when it rains, the nest gets watered, so they move.
The north is known to be drier, while the south is wetter. The higher the air temperature, the stronger the ability of the air to conduct heat. This thermal conductivity is somewhat similar to that of wood and iron, and in winter your body feels hotter next to wood than next to iron, because the heat conductivity of the material is different. >>>More