On the globe there are 2 meridians, not east longitude, not west longitude, longitude is

The 0 degree meridian is the prime meridian.

Benciferi Chinese name: 本自子线.

English name: Prime Meridian

The 0° longitude is the starting point for calculating the east-west longitude. In 1884, an international conference decided to use the meridian that passed through the meridian center of the Greenwich Observatory in England as the prime meridian. After 1957, the Greenwich Observatory moved to its location.

In 1968, the origin of the international agreement (CIO) was used as the origin of the earth's poles, and the starting point of longitude was practically unchanged.

The prime meridian, also known as the "first meridian" or "zero meridian", is the starting meridian on the earth to calculate longitude. The formulation and use of the prime meridian is subject to change.

The prime meridian measures the geographical longitude from the prime meridian to the east and west, respectively, from 0 to 180 degrees. In 1884, the International Meridian Conference held in Washington, D.C., decided to adopt the meridian of the Eri Middle Star Instrument through the Royal Observatory Greenwich (former site) in London, England, as the standard reference meridian for time and longitude measurement, called the prime meridian. After the relocation of the Greenwich Observatory in 1957, the International Time Bureau defined the origin of the longitude of the mean observatories at the equator using a number of observatories, which was derived from the longitude values used by these observatories and the time data.

Since 1968, the meridian passing through the origin of international customary origin and the origin of longitude of the average observatory has been used as the prime meridian.

The two meridians are:

The first is the local meridian, which is the 0 degree meridian.

The second is the 180-degree meridian.

These two articles do not belong to the east longitude nor to the west longitude.

180° meridian and 0° meridian (prime meridian).

1. Earth globe - longitude and longitude.

The 0° meridian is called the prime meridian, which is the starting line of the meridian from which 180° to the east and 180° to the west, which are called east longitude and west longitude, which are represented by the English letters e and w, respectively

So the answer is: prime meridian; e；w．

The statement about the latitude and longitude lines on a globe is true: all the meridians are equal in length.

What is a globe:

A globe, i.e. a model of the Earth. The globe is to make it easier to understand the earth, and people imitate the shape of the earth, shrink it according to a certain scale, and make a model of the earth - the globe. The deformation of length, area, direction, and shape is provided on the globe, so it is correct to observe the interrelationship of various scenes from the globe as a whole.

Origin of the globe:

The world's first surviving globe was invented in 1492 by the German navigator and geographer Beheim, and it is now preserved in the Nuremberg Museum. In 1480, when Beheim (1459-1507) first visited Portugal as a Flemish merchant, he claimed to be a pupil of the Nuremberg astronomer Miller, so he became a seafaring advisor to John II.

At that time, voyagers used astrolabes to determine the altitude of the sun, moon, and stars to calculate time and latitude. The use of brass instead of a wooden astrolabe may have been initiated by him. He may have sailed with D. Cow to the west coast of Africa (1485-1486).

After returning to Nuremberg in 1490, with the assistance of the painter Grokendon, he began to paint the globe he had designed, and in 1492 he completed a globe with a diameter of 20 inches.

The meridians and parallels were drawn on globes and maps in order to determine the position and direction on the earth, and there were no lines on the ground.

The latitude and longitude lines are perpendicular to each other. The weft is a circle of varying lengths. The longest parallel is the equator. The meridians are arcs of equal length that connect the north and south poles. Because the meridian indicates the north-south direction, the meridian is also called the meridian.

Internationally, the meridian passing through the original site of the Greenwich Observatory in the United Kingdom is called the 0° meridian, also known as the prime meridian. On Earth, the meridian lines indicate the north-south direction, and the latitude lines indicate the east-west direction. Dividing line between the eastern and western hemispheres: 160° east longitude and 20° west longitude.

The criss-crossing lines on the globe are the latitude and longitude lines.

Huainanzi Topographical Training" said: "Where the terrain is the latitude from east to west, and the north and south are the longitude. Therefore, the arc of equal length connecting the north and south poles is called the meridian.

The latitude and longitude lines are perpendicular to each other. The weft is a circle of varying lengths. Because the meridian indicates the north-south direction, the meridian is also called the meridian.

Internationally, the meridian that passes through the original site of the Greenwich Observatory in London, England is called the 0° meridian, also known as the prime meridian. The parallels indicate the east-west direction. The 0° parallel, also known as the equator, is the largest parallel.

The meridians and parallels were drawn on globes and maps in order to determine the position and direction on the earth, and there were no latitude and longitude lines on the ground.

1. Latitude and latitude People call the center of the earth's axis the center of the earth. The plane that passes through the center of the earth and is perpendicular to the earth's axis is called the equatorial plane. The large circle where the equatorial plane intersects the Earth's surface is called the equator. On the earth's surface, any circle parallel to the equator is called a coil of latitude or parallel.

2. Longitude and longitude The large circle that passes through the poles and is perpendicular to the equator is called the meridian coil or meridian, also known as the meridian. Since all the meridians intersect the north and south poles and are perpendicular to the parallels, any meridian represents the north-south direction of the earth. The longitude of a point on the earth is the angle between the plane of the meridian and the plane of the prime meridian where the point is located.

3. The latitude and graticule lines on the graticule globe together form the graticule. With graticules and their latitude and longitude, the location of various points on the earth is easily determined. Two different locations on Earth can have the same latitude or longitude, but it is not possible to have both the same latitude and the same longitude.

Therefore, different places and different positions on the earth can be represented by corresponding latitude and longitude.

On a globe, the longitude indicates the (north-south) direction and the latitude line represents the (east-west) direction.

On a globe, the line connecting the north and south poles, called the meridian, indicates the north-south direction.

The line that intersects perpendicular to the meridian thread, called the parallel, indicates the east-west direction.

The meridians represent the east-west direction, and the parallels represent the north-south direction.

The north and south are the meridians, the east and west are the latitudes, the vertical is the meridians, and the horizontal ones are the latitudes.

The meridians point north and south, and are all semi-arcs (from the prime meridian in the middle, each with a longitude of 180 degrees to the east and west).

The parallels point to the east and west, and are all coils of latitude (from the equator in the middle, that is, the 0 degree parallel, to the north and south poles, which are divided into 90 degrees south latitude and 90 degrees north latitude).

The warp and weft make a relatively perpendicular relationship.

Globe, points located at opposite ends of the Earth's diameterLatitude and longitudeRelationship: The latitude and longitude of the two points of geocentric symmetry on the globe are equal to 180 degrees, one east longitude and one west longitude.

From the 0° latitude to the north is the northern latitude, which belongs to the wild northern hemisphere.

The latitude degrees of the northern hemisphere gradually increase until 90°, and the latitude line of 0° is south latitude to the south, which belongs to the southern hemisphere.

The degree in the southern hemisphere gradually increases, and the degree of the song is large until 90°; Longitude distribution, from 0° to the line.

An increase in degrees to the east is east longitude, and an increase in degrees to the west is west longitude.

Categorized by use1) The latitude and longitude grid globe has only the latitude and longitude grid and the annotation of the degree on its spherical surface, also known as the theodolite.

2) Political region globe, a globe with a smooth spherical surface to represent the division of administrative regions.

3) The topographic globe is a model that represents the terrain, and the spherical surface can be divided into two types: plane and three-dimensional uplift.

4) Schematic globes, spheres only show the distribution of continents and oceans, and are commonly used in decorative items.

5) Teaching globe, used for school and home geography teaching.

Answer: B: The parallels indicate the east-west direction; The closer to the equator, the lower the latitude and the longer the parallel, and the closer to the poles, the higher the latitude and the shorter the parallel; On the globe, countless warp lines can be drawn on the branches; Each meridian is equal in length, and any one of the silver meridians can divide the earth into two hemispheres, and one meridian can do nothing. Therefore, A, C, and D are wrong, and B is selected for this question.

a. Internationally, it is customary to use the meridian coil composed of two meridians, 20° west longitude (written 20°W) and 160° east longitude (written 160°E), as the boundary dividing the eastern and western hemispheres, so A is incorrect;

b. The equator is the largest weft coil, and all the meridians connect the north and south poles and are semicircles, so the length of the 0° latitude (equator) is twice the length of the 0° meridian, so b is correct;

c. On the globe, the latitude line indicates the east-west direction, and the meridian line indicates the north-south direction, so c is incorrect;

d. It is the Tropic of Capricorn, the dividing line between the tropics and the temperate zone, the polar circle, and the dividing line between the temperate zone and the cold zone, so d is incorrect

Therefore, b