What is the role of the rotation of the earth and its rotation

To put it simply, the rotation and the revolution are all about getting rid of the attraction of the sun to the earth, and that's it.

The rotation of the earth makes itself day and night.

The revolution creates the four seasons.

Significance of the Earth's Rotation:

Cycle of day and night (cycle 24 hours, one solar day).

Local time (different longitude local time is different), longitude difference of 1° time is 4 minutes.

The offset of a horizontally moving object (north, right, south, left). For example, the relationship with river erosion banks and accumulation banks, the relationship with river port construction, and the relationship with the development of deltas.

The sun, moon and stars rise in the east and set in the west. (The North Pole does not move, and in the Northern Hemisphere, the latitude at which the Polaris is at the angle (elevation) to the ground level.)

The Earth's poles are slightly flattened, and the equator is slightly bulging (due to the greater centrifugal force at the equator, decreasing towards the poles).

Rotation, foreign name: rotation, refers to the motion of an object to rotate on its own, and the object will rotate along an axis that passes through the object itself, which is called the "axis of rotation". In general, the axis of rotation crosses the center of mass of a celestial body.

All moons, planets, stars, and galaxies revolve around their own axis The Earth's rotation is the circular motion of the Earth along an axis that passes through the Earth's center (the axis of rotation, also called the Earth's axis). It's called rotation.

The Earth rotates from west to east on its axis of rotation, rotating counterclockwise from the north pole and clockwise from the south pole. The Earth's axis of rotation is angled to the ecliptic plane, perpendicular to the equatorial plane.

The Earth's rotation is an important form of motion of the Earth, with an average angular velocity of rotation in degrees and a linear velocity of 465 meters and seconds at the Earth's equator. It takes 23 hours and 56 minutes for the Earth to rotate around and increases or decreases by 3 to 4 thousandths of a second every 10 years.

Earth's rotation is the rotation of the Earth around its axis of rotation from west to east, which rotates counterclockwise from the north pole and clockwise from the south pole. The rotation of the Earth produces the phenomenon of day and night, the phenomenon of jet lag, the phenomenon of deviation of objects moving horizontally along the surface of the earth.

As the Earth rotates, it also revolves around the Sun. The movement of the earth around the sun is called the revolution of the earth. The direction of the revolution is from west to east, and the time of one revolution is one year. The rotation of the earth brings about the change of the four seasons, that is, the change of the seasons in spring, summer, autumn and winter.

Earth self** Definition: The earth rotates from west to east around the earth's axis. (It rotates counterclockwise from the North Pole and clockwise from the South Pole.) Earth Common** Definition: The Earth revolves around the Sun in a certain orbit.

Spinning top, you know? It belongs to rotation.

Ferris wheel, you know? Each cockpit revolves around its axis.

No one pushes, no one drags, spins on their own.

The rotation of the earth is an important form of motion of the earth, and it is of great significance!

One. Day and night alternate.

Causes: The Earth does not emit light and is not transparent and the rotation of the Earth.

2.Period: 1 solar day, i.e. 24 hours.

3.The morning and dusk lines are generated.

Two. Local time and district time.

The concept of local time: the local meridian plane is used as the starting plane, and the time determined by the celestial body at any time is called the local time of the place.

Meaning of time zone: A time zone refers to a region with the same time regime.

Three. Period boundaries.

Concept: Internationally, the 180° meridian between the east and west twelve districts is regarded as the international date line, referred to as the date line.

In fact, the rotation of the earth also causes objects moving horizontally in any direction on the earth to deviate from the initial direction of their motion.

Rotation is the rotation of the earth centered on its axis of rotation, and revolution is the orbital motion of the earth centered on the sun. Rotation refers to the motion of an object to rotate on its own, and the object rotates along an axis that passes through the object itself, which is called the "axis of rotation". Revolution refers to the cyclic motion of an object along a certain orbit centered on another object.

Earth rotation refers to the phenomenon of earth tremor rotating from west to east around the earth's axis. The rotation of the earth is an important form of movement of the earth, which has the meaning of day and night, the rising and setting of the sun, moon and stars in the east and the time difference in different places, and its rotation takes 23 hours and 56 minutes, and the rotation cycle will increase or decrease by 3 thousandths to 4 thousandths of a second every 10 years.

On average, the time taken by the Earth to make one revolution increases by about 0.0018 seconds per century. As a rough calculation, 400 million years ago, the earth rotated in just 22 hours. The earth rotates at the same time, and it takes 23 hours, 56 minutes and 4 seconds to rotate for one revolution, and it rotates about 0.986 degrees, which is equivalent to 3 minutes and 56 seconds according to the speed of the earth's rotation, and the time, rotation plus the time used for revolution is 24 hours.

3.Meaning of the morning and dusk line: the dividing line between the day and night hemispheres, including the morning line and the evening line.

Interpretation of the morning and dusk line: rotation method: follow the direction of the earth's rotation, from night to day, which is the morning line; From day to night, it is dusk.

Time method: 6 o'clock local time on the equator corresponds to the morning line; It is 18 o'clock on the equator, which corresponds to the dusk line. Azimuth method:

The east side of the night hemisphere is the morning line, and the west side is the evening line; The eastern side of the day hemisphere is the dusk line, and the western side is the morning line.

Ontological motion: The position of the earth's axis of rotation on the earth's body is constantly changing, and this change is called pole shift, referred to as pole shift. In 1765 Euler proved that if there were no external forces, the axis of rotation of the rigid Earth would oscillate freely around the axis of shape, with a period of 305 sidereal days.

It was only in 1888 that the existence of pole shifts was confirmed by observations of latitudinal variations.

In 1891, the American Zen early SC Zhang Deler further pointed out that the pole shift includes two main cyclical components: one is the free oscillation with a period of about 14 months, also known as the Zhang Deler oscillation; The other is a forced swing with a cycle of 12 months.

The observed Zhangdeler swing is the free swing predicted by Euler. However, because the Earth is not an absolute rigid body, the period of Zhangdler's oscillation is about 40% longer than the period predicted by Euler.

The geographical significance of the Earth's rotation is that the southern and northern hemispheres alternate between day and night; time differences in different places; The object is deflected, north, right, south, left, and the equator is not deflected.

At a time, the sun can only illuminate half of the Earth's surface. Half of it was a white day, and half of it was night. In addition, the day and night change make the daytime temperature of the ground not too high, and the night temperature will not be too low, which is conducive to the survival and development of the earth's organisms.

Definitions

The Earth rotates from west to east on its axis of rotation, rotating counterclockwise from the North Pole and clockwise from the South Pole. Various theories about the rotation of the earth are still hypothetical.

The Earth's rotation is an important form of motion of the Earth, with an average angular velocity of rotation in degrees and a linear velocity of 465 meters and seconds at the Earth's equator.

It takes 23 hours and 56 minutes for the Earth to rotate around and increases or decreases by 3 to 4 thousandths of a second every 10 years. In general, the rotation of the earth is uniform. But sophisticated astronomical observations have shown that there are 3 different variations in the Earth's rotation:

long-term slowing; cyclical changes; Irregular changes.