How to judge the Eastern and Western Hemispheres and the Northern and Southern Hemispheres?

The distinction between the northern and southern hemispheres: look at its latitude value after n or s, n is the northern hemisphere, s is the southern hemisphere. If it is on the diagram, above the 0 degree latitude is the Northern Hemisphere and below is the Southern Hemisphere.

If there is no 0 degree of latitude on the map, it is in the Northern Hemisphere that gradually decreases in latitude from top to bottom, and it is in the Southern Hemisphere that gradually increases in latitude from top to bottom.

Distinction between the Eastern and Western Hemispheres: First of all, understand that the dividing line between the Eastern and Western Hemispheres is 20 degrees w and 160 degrees eThe first step is to see whether its longitude is followed by w or e, if it is followed by w, and then compare the previous longitude with 20, if it is greater than 20, it is in the western hemisphere, if it is smaller than 20, it is in the eastern hemisphere; If it is followed by e, then compare the previous longitude with 160, if it is greater than 160, it is in the Western Hemisphere, if it is smaller than 160, it is in the Eastern Hemisphere.

To put it simply"Look at W and E first, then look at the longitude, big west (melon), small east (winter melon).".

If it is shown on the diagram, the longitude gradually decreases from left to right to the west of the 0 degree meridian (prime meridian), and the longitude gradually increases from left to right to the east of the 0 degree meridian (prime meridian), and then the eastern and western hemispheres are determined according to the above principle.

The eastern hemisphere is 160 degrees east longitude, and the dividing line between the eastern and western hemispheres is 160 degrees east longitude and 20 degrees west longitude.

East of 20 degrees west longitude and west of 160 degrees east longitude is the eastern hemisphere. West of 20 degrees west longitude and east of 160 degrees east longitude is the Western Hemisphere.

This is mainly a decision made taking into account the distribution of the earth's land, because if it is divided according to the 0 degree meridian and the 180 degree meridian, then it will pass over the land, which will bring inconvenience to people's lives, so the whole move westward by 20 degrees.

As for the options you gave, the "160 degrees east longitude and 20 degrees west longitude" mentioned above are all longitudes, and the equator (0 degrees latitude is also the longest parallel) is the dividing line between the northern and southern hemispheres.

Longitude 20°W to 160°E is the Eastern Hemisphere, and north of the equator is the Northern Hemisphere.

North of the equator is the Northern Hemisphere.

East of 20°W longitude and west of 160°E is the Eastern Hemisphere.

Eastern and Western Hemispheres: Bounded by a meridian coil of 20 degrees west longitude and 160 degrees east longitude – east of 20 degrees west longitude and west of 160 degrees east longitude is the eastern hemisphere.

West of 20 degrees west longitude and east of 160 degrees east longitude is the Western Hemisphere.

Northern and Southern Hemispheres. It is bounded by the equator (0 degrees of parallel) – north of the equator is the Northern Hemisphere, and south of the Southern Hemisphere.

Latitude and longitude. It is the combination of longitude and latitude to form a coordinate system, called the geographic coordinate system, which is a kind of use of three-dimensional space.

The spherical coordinate system defines space on Earth and can indicate any location on Earth.

The parallel, like the meridian, is an auxiliary line hypothesized by human beings for the convenience of measurement, and is defined as the rotation of a point on the earth's surface with the earth.

The trajectory formed. Any one of the wefts is round and parallel to each other. The length of the parallels is the circumference of the equator multiplied by the cosine of the latitude of the parallels.

Therefore, the equator is the longest, and the farther away from the equator is the latitude, the shorter the circumference, and it shrinks to 0 at the poles. From the equator to the north and south, each 90°, is called the north and south latitudes, which are denoted by "n" and "s", respectively.

Important wefts:

Arctic Circle. 66°33' 38" n）

Tropic of Cancer. 23°26' 22" n）

Equator (0°N).

Tropic of Capricorn (23° 26' 22" s）

Antarctic Circle (66°33' 38" s）

The length is different (the farther away from the equator, the shorter the parallel).

The northern and southern hemispheres are judged as follows:1. North of the equator is the Northern Hemisphere, and south of the Southern Hemisphere.

2. The latitude decreases from south to north to the northern hemisphere, and vice versa to the southern hemisphere.

3. From the pole, the southern hemisphere moves clockwise, and the northern hemisphere moves counterclockwise.

The northern and southern hemispheres are divided according to the equator, south of the equator is called the southern hemisphere, and north of the equator is called the northern hemisphere. The northern hemisphere is occupied by land and by sea. Winter in the Northern Hemisphere is usually from December to February, and summer is usually from June to August, as opposed to the four seasons in the Southern Hemisphere.

The two most widespread climates in the temperate region of the Northern Hemisphere are temperate continental and subarctic coniferous forests.

All of them are located in the northern hemisphere, North America and Europe. Brazil and Australia are the two largest countries in the southern hemisphere. Oceania, South America.

Most of them are in the Southern Hemisphere. Indonesia in Asia.

More than 70% of its land is located in the southern hemisphere. Timor-Leste.

It is the only Asian country in Asia where its entire territory is located in the southern hemisphere.

Look at the dividing line.

The eastern and western hemispheres are divided by 20 degrees west longitude and 160 degrees east longitude: east of 20 degrees west longitude, west of 160 degrees east longitude is the eastern hemisphere; East of 160 degrees east longitude and west of 20 degrees west longitude is the Western Hemisphere (i.e., those with a longitude less than 20 degrees are in the Eastern Hemisphere, those with a longitude greater than 160 degrees are in the Western Hemisphere, and the rest of the east longitude is in the Eastern Hemisphere and west longitude is in the Western Hemisphere).

The northern and southern hemispheres are divided by the equator: north of the equator is the northern hemisphere, south of the southern hemisphere (i.e., latitude is north latitude in the northern hemisphere, south latitude is in the southern hemisphere).