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Because the earth itself is tilted, the globe.
This is also made to conform to the reality and facilitate people's understanding of geographical knowledge. There is an angle between the Earth's orbit and the Earth's orbit, and this angle is calledYellow and red cornersIt has important astronomical and geographical significance, and is also the fundamental reason for the division of the four seasons and five zones on the earth.
1. The existence of the yellow-red angle refers to the rotation of the earth.
The angle of intersection of the orbital plane with the equatorial plane. Its specific value is 23°26', approximately equal to. It is precisely because of the existence of the yellow-red angle that the sun shines directly at the point.
At the latitude of 23 ° 26 north and south of the earth'to and fro, thus causing the height of the sun.
The seasonal changes and the length of days and the shortness of nights occur regularly, resulting in the four seasons and the cold and warm of spring and autumn on the earth. Precisely because ofThe rotation of the EarthThe angle of the orbit and the orbit are not the same, so there is a change of seasons.
2. The Rotation of the EarthWe know that the Earth not only rotates, but also rotates. The Earth rotates from west to east along its axis of rotation, which is called rotation. When viewed from the North Pole, the rotation appears counterclockwise, and from the South Pole, it becomes clockwise.
status. The Earth's axis of rotation is perpendicular to the equatorial plane, and the linear velocity of the rotation.
for 465 m sec. It takes 23 hours and 56 minutes for the Earth to rotate around in one cycle, which is what we call a day every day. It is precisely because of the rotation of the earth that we see the sun rise in the east and set in the west, and there will be a change in morning and dusk.
3. The Revolution of the EarthIn addition to its rotation, the Earth will also rotate around its orbit. The time it takes for the earth to revolve around is one year. It is because of the rotation of the earth that our seasons change.
The length of the days and the length of the nights and the height of the sun change periodically depending on the season. Depending on the position of the Earth during the year, it receives different amounts of light, so there will be a change of seasons and an alternation of cold and warm.
It is precisely because of the rotation and revolution of the earth that we have the alternation of morning and dusk and the alternation of seasons. Dear readers, do you understand now?
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Because the globe is made according to the reduction of the earth by a certain proportion, and because of the rotation and revolution of the earth, there is a certain angle between the ecliptic plane and the equatorial plane, and this angle is the degree.
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Because the earth does not rotate upright in the universe, the angle between its ecliptic plane and the equatorial plane is degrees, so the tilted globe is the true state of the earth in the universe.
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Because the earth itself is tilted at this angle, the globe will also be tilted at this angle.
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Astronomy refers to the annual apparent motion of the Sun on the celestial sphere as the "ecliptic", which is the projection of the Earth's orbital plane on the celestial sphere. The Earth's axis of rotation tilts the ecliptic plane (i.e., the ecliptic and the equator meet), thus causing different changes in the four seasons of the year.
Joke 1: Why does the globe tilt 23 and a half degrees?
I'm not a geography student, and after seeing the following joke, I wondered why the globe was tilted twenty-three times and half a fortune?
Globe The director of the bureau visited a certain school and saw a globe in the classroom, so he asked Student A: Tell me, why is this globe tilted by 23 and a half degrees? 」
Schoolboy A was very frightened and replied, "I didn't do it." 」
At this moment, another student B walked into the classroom. The director asked again, and Student B replied, "You know, I just came in and don't know anything." 」
The director asked the teacher what was going on, confused.
The teacher said apologetically, "You can't blame them, the globe was already like this when it was bought." 」
Seeing that the director's face was getting more and more ugly, the principal hurriedly stepped forward to explain: I am ashamed to say it, The principal smiled and said: Because of the limited funds of the school, we bought the stalls. 」
I hope you are satisfied with my answer!
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Because the earth is in space, the Earth's axis is not horizontal. The globe tilts because of the posture of the actual Earth during its rotation and revolution.
Because there is a yellow-red angle between the earth's orbital plane - the "ecliptic plane" and the earth's orbital plane - the "equatorial plane", which is the degree of the Tropic of Capricorn; The Earth rotates and revolves obliquely, with the northern end of the Earth's axis pointing to the North Star. Therefore, the globe is made according to the posture of the actual earth when it rotates and revolutions.
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The tilt of the globe is because the axis of rotation of the earth and the plane of the orbit of the earth are tilted at an angle, and this angle is the degree. The tilt of this angle leads to changes in seasons and hours of sunshine throughout the planet. During the summer solstice in the Northern Hemisphere (around June 21), regions within the Arctic Circle will experience 24 hours of continuous daylight, while regions within the Antarctic Circle will experience 24 hours of continuous night. During the winter solstice (around December 21) in the Northern Hemisphere, regions within the Arctic Circle will experience 24 hours of continuous nights, while regions within the Antarctic Circle will experience 24 hours of continuous daylight.
This change in seasons and hours of sunshine is caused by the tilt of the Earth's axis of rotation.
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The reason why the globe is inclined is because this angle determines the angle between the Earth's axis of rotation and its orbit. This angle is known as the Earth's axis inclination and is formed by the balance between the centrifugal force and the gravitational force generated by the Earth's rotation.
The existence of the Earth's axis inclination causes the Earth's seasons to change. As the Earth revolves around the Sun, different regions of the Sun shine at different angles, resulting in different climates and seasons. On the globe, the inclination can more realistically reflect the tilt of the earth's axis of rotation and the orbit of the earth, so that users can better understand the geographical and climatic characteristics of the earth.
This angle of inclination is also known as the trapped-yellow econjunction, because it is the angle between the ecliptic and the equator. The ecliptic is the trajectory of the Sun moving in the sky as the Earth sees the Earth rise and fall, while the equator is the virtual line that divides the Earth into north and south halves. Changes in the yellow-red angle also affect the Earth's climate and seasonal changes.
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A: The tilt of the globe is caused by the actual posture of the Earth during its rotation and revolution. There is a yellow-red angle between the earth's orbital plane and the earth's rotation orbital plane, and the yellow-red angle is the yellow-red intersection angle, which is a degree, and the latitude of the Tropic of Cancer is also a degree.
Therefore, in order to more realistically reflect the spatial attitude of the earth, the globes made are inclined to the horizontal plane. Affected by the intersection of yellow and red, the rotation and revolution of the earth are tilted, which is also the reason for the change of seasons and the length of day and night.
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Because there is a yellow-red angle between the Earth's orbital plane-ecliptic plane and the Earth's orbital plane-equatorial plane, the angle is degrees.
In the rotation and revolution of the earth, the orbit plane of the earth is the ecliptic plane, and the orbital plane of the earth is the equatorial plane, and there is an angle between the ecliptic plane and the equatorial plane that is the yellow-red angle, and the angle between the yellow-red stove beam is the degree, that is, the latitude of the Tropic of Capricorn. Affected by the angle of the yellow and red cross, the rotation and revolution of the earth are tilted, so the tilt angle of the globe is made according to the actual situation of the earth's rotation and revolution, in order to better restore the real space attitude of the earth.
It is precisely because of the yellow-red angle that the annual change of the direct sun point moving back and forth between the north and south latitudes of the earth is 23°26, which causes the seasonal change of the noon solar height and the seasonal change of the length of day and night, which causes the seasonal change of the yellow-red angle of the earth and the amount of solar energy obtained in various places, forming the replacement of the four seasons.
History of the globe
The world's first globe was made by the Dutchman Mercator, a Dutchman who was a famous cartographer in the 16th century, who knew astronomy and geography and was very good at mathematics. In fact, he began the first map as early as 1537, and later began to draw maps of Flanders.
In 1540, Mercator began to officially open his own cartography shop in the area of Louvain, and the precise proportions of the maps attracted a lot of attention from the people of the time, and in the same year he succeeded in producing a globe. In 1568, he successfully completed the world-famous "Floor Plan of the World".
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Hello, because the tilt angle of the earth's rotation is degrees, the vertical yellow and red intersection angle of land objects is 23 ° 26, and the tilt angle of the earth's axis and the ecliptic plane is 66 ° 34, so the globe should also be tilted. This angle is also called the yellow-red angle, and under the influence of the yellow-red angle, the earth's rotation and revolution are tilted, so in order to more truly reflect the attitude of the earth in the morning, the globe made is inclination.
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