Changes in what happens because of the revolution of the earth

The orbit of the Earth is elliptical, the semi-long diameter of the orbit is 149597870 km, the eccentricity of the orbit is 1 km, and the average orbital velocity of the revolution is km per second; The angle between the orbital plane (ecliptic plane) and the Earth's equatorial plane is 23°27', known as the yellow-red cross. The rotation of the earth produces the diurnal variation of the earth, and the rotation of the earth and the existence of the yellow and red angles cause the alternation of the seasons.

From the Earth, the Sun moves counterclockwise along the ecliptic, and there are two intersections of the ecliptic and the equator on the celestial sphere that are 180° apart, where the point where the Sun passes through the celestial equator along the ecliptic from the south to the north of the celestial equator, is calledVernal equinox

The point, another point separated by 180° from the equinox, is calledAutumnal equinox

The sun passes through the vernal and autumnal equinoxes on the vernal equinox (around March 21) and the autumnal equinox (around September 23) each year. For people living in the Northern Hemisphere, when the sun passes through the vernal and autumnal equinoxes, it means that it is spring or autumn. The point where the sun reaches the northernmost point through the vernal equinox is calledSummer solstice

point, another point with a difference of 180° is calledWinter solstice

The sun passes through the summer and winter solstices around June 22 and December 22 each year. Similarly, for those living in the Northern Hemisphere, when the Sun is near the summer and winter solstices, it is astronomically the summer and winter seasons. The opposite is true for those living in the southern hemisphere.

As a result of the rotation of the earth, the four seasons change, and there are five zones.

As the earth revolves, the length of day and night changes.

The change of the four seasons, the division of the five belts.

1. Revolution of the earth.

The phenomena that arise are:

1) According to the height of the sun.

The difference is divided into five zones: northern cold, northern temperature, tropical, southern temperature, and southern cold;

2) According to the time difference in the amount of heat obtained, the four seasons are divided: spring, summer, autumn and winter;

3) the phenomenon of changing the length of day and night;

4) changes in the position of celestial phenomena; The phenomenon of the law of biological growth.

2. The phenomena produced by the rotation of the earth are:

1) the phenomenon of diurnal alternation;

2) Geostrophic deflection forces in the northern and southern hemispheres.

various motion rotation phenomena caused by them;

3) The phenomenon of time difference in the eastern and western regions, and the phenomenon of biological work and rest.

The change of seasons, the change of the length of day and night, the creation of the five bands, and the change of the height of the sun at noon.

The direction of the earth's rotation and revolution is from west to east, the rotation moves around the earth's axis, the revolution moves around the sun, the cycle of rotation is one day, the cycle of revolution is one year, the phenomenon of the earth's revolution has seasonal changes, the change of day and night length, the generation of five belts, the change of the height of the sun at noon, etc., the phenomenon of the earth's rotation has the alternation of day and night, the sun rises in the east and sets in the west, and the difference in local time carries infiltration.

The rotation of the Earth. 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 the Earth's rotation of 465 meters and seconds at the Earth's equator. It takes 23 hours and 56 minutes for the Earth to rotate around the Earth, and about every 10 years, the rotation cycle increases or decreases by 3 to 4 thousandths of a second.

The Earth's axis of rotation and rotation (the angle between about 33 and 66 degrees) are not parallel.

The Earth revolves around the Sun at an angle.

And because of this angle, the earth has a seasonal change.

When the planes of the Earth's rotation and revolution intersect at two points on the celestial sphere, they are called the vernal equinox and the autumnal equinox.

That is, the southern and northern hemispheres have exactly the same length of day and night because the rotation of the earth ---There is a diurnal cycle. Because of the rotation, the area of the earth that receives sunlight is constantly changing, so there is a division between the day hemisphere and the night hemisphere, and the morning and dusk line.

2.There is a division of time zones. Since the angular velocity of the earth's rotation is 15 degrees per hour, the longitude is every 15 degrees, and the difference between time and time is one hour.

For example, Beijing is located at about 120 degrees east longitude, and 120 degrees divided by 15 degrees = 8, so Beijing is located in the 8th East District. ） 3.There was a directional shift.

Deflects horizontally moving objects. The Northern Hemisphere is biased to the right, and the Southern Hemisphere is biased to the left. 4.

The earth is an ellipsoid sphere with a slightly bulging equator and slightly flattened poles. Geographical phenomena caused by revolution Because of the rotation of the earth--- the earth's rotation and the rotation of the earth cooperate with the tilt of the earth's axis, forming the four seasons and the length of day and night. 1.

There is a phenomenon of long days and short nights in summer, and short days and long nights in winter: on the summer solstice, the sun hits the Tropic of Cancer directly, the days are longer and the nights are shorter in the Northern Hemisphere, and the polar day appears in the North Pole. The winter solstice stool accompanies the sun to shine directly on the Tropic of Capricorn, the northern hemisphere has short days and long nights, and the polar night appears in the North Pole.

The Southern Hemisphere is just the opposite) 2.The spring equinox is the same as the autumn equinox, when the sun shines directly on the equator, and the northern and southern hemispheres are equally divided, and the length of day and night is the same. 3.

There is a change of seasons.

Because the earth's axis is tilted.

The sun shines directly on different parts of the earth at different times, causing the seasons to change.