What are the phenomena produced by the rotation of the earth

The rotation of the EarthThe diurnal cycle and the time difference are formed.

The earth rotates from west to east, and the time of one rotation is 24 hours.

The time difference is that when the earth's rotation produces the place, the time in the east is earlier than the time in the west, and every 15 degrees of longitude, the local time difference is one hour. The earth revolves.

Produces four seasons and five bands.

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 hypotheses. The sun rises in the east and sets in the west due to the rotation of the earth; Even if the earth does not rotate, there will be day and night.

The rotation of the earth produces a day-night alternation, a jet lag, and a geostrophic deflection force. The first phenomenon is the day-night cycle: the Earth is a non-luminous and opaque sphere, and at any one time, the Earth revolving around the Sun can only be illuminated to half of its surface.

Then it will be daytime in the hemisphere facing the sun, and the other hemisphere will not shine on the sun, and it will become night.

The second phenomenon is the time difference: the time difference due to rotation means that the farther away the place is, the more time difference there is; Because every 15 degrees of longitude is divided into a time zone, the time of each time zone is different, and the time zone is different when the distance is very far, and there is also the saying that there is a jet lag.

The third phenomenon is the geostrophic deflection force; The deflection force of the Earth's rotation refers to the rotation of the Earth so that a moving object on the Earth's surface is subjected to a force perpendicular to the direction of its motion. It is manifested as a deviation to the right in the northern hemisphere, a deviation to the left in the southern hemisphere, and no deviation on the equator.

When an object moves relative to the earth's surface, it changes direction due to the influence of a force called the geostrophic deflection force, but the geostrophic deflection force is not a real force, but an inertial force. When studying geography, it is necessary to clearly grasp the three phenomena produced by the rotation of the earth, and the study of the revolution in the later period should also be easy to understand on this basis.

The phenomena produced by the rotation of the earth are mainly manifested in astronomical phenomena and geography, and the specific phenomena are:

1. The phenomenon of diurnal alternation;

2. Various motion rotation phenomena caused by the deflection force of the ground lead in the northern and southern hemispheres;

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

The phenomena produced by the rotation of the Earth are: the phenomenon of diurnal turnover on the Earth's surface (diurnal alternation); Time difference between local time and district time (time difference); Objects moving horizontally produce a deflection phenomenon (geostrophic deflection force generated by limb training).

The "rotation of the Earth" simply describes the attitude of the Earth itself around the Sun, which rotates once every 24 hours relative to the position of the Sun; Relative to the position of the star, it rotates once every 23 hours and 56 minutes, which is the basis of the current time scale, the origin of the solar day and the sidereal day length, and the reason for the earth's sunrise, day, twilight and night.

Due to the rotation of the earth, the sun's rays shine differently in different regions, resulting in the phenomenon of day and night. When a part of the Earth faces the sun, the region enters daylight, and when the region turns away from the sun, it enters night.

The length of time that alternates between day and night depends on the speed of the Earth's rotation and the position of the Sun. At the equator, the length of the day is 24 hours, and the time of day and night is approximately equal; In the polar region, there is a polar day in summer and a polar night in winter, and the time difference between day and night is very large.

Space Movement:

The polar radius of the Earth is about 1 300 times shorter than the radius of the equator, and the equatorial plane of the Earth's rotation, the ecliptic plane of the Earth's revolution around the Sun, and the white plane of the Moon's revolution around the Earth are not in the same plane. As a result of these factors, the gravitational pull of the Moon, the Sun and the planets causes the Earth's axis of rotation to move in space.

This movement is often referred to as precession and nutation. Precession motion is characterized by the rotation of the Earth's axis around the ecliptic axis, depicting a conical plane in space, and it takes about 10,000 years to circumvent it. Nutation is a number of complex periodic movements superimposed on precession movements.

The Earth's axis always points to the North Star and never changes, and in the orbit of the Sun, when the time of movement is equal, the Earth and the Sun have the same arc-shaped area.