Regarding the question of the latitude and longitude of the first geography of the junior high schoo

Question 1: A meridian is half a circle.

b Except for the pole (90 degrees of parallel), each parallel is a circle.

All meridians are of equal length, about 20,000 kilometers.

The higher the dlatitude, the shorter the parallel.

Question 2: A can reach the North Pole by going north along any meridian line, and the word northbound restricts the inability to reach the original place.

b Except for the north and south poles, there is only one meridian at any point on the earth's surface.

All meridians are of equal length, about 20,000 kilometers.

In addition to the equator, there are two parallels at the same latitude, and the question says the equator and the pole, which is a bit problematic.

I feel that the two questions are not particularly accurate, if it is an exam, if you have to choose one, it is recommended to choose B for the first question and D for the second question

1. Choose b, the warp is of equal length (half a circle), and the weft is a circle of different sizes.

2d, the equator is the longest parallel, so you can't find another parallel longer than the equator, but other parallels are fine, as long as the dimension values are the same, it is the same length.

ps, the meridian starts from one pole and ends at another, so it is half a circle, and it is not possible to return to the original starting point along one meridian, the meridian and the latitude are non-existent, they are artificially determined, so the specific number of meridians is unknown, it is only artificially delineated. The warp threads are all of equal length (it is accepted, it is not known whether they are true or not).

Weft warp.

1.The shape is round and semicircled.

2.The size of the equator is up to 40,000 kilometers and is equal in length, 20,000 kilometers.

The poles of the net are gradually shortened to 0 km.

3.The boundaries of the scalar equator (0° latitude ° longitude.

East longitude is north latitude, south latitude 0° east and 180° west.

0° West and 180° East is the west longitude.

4.The scale number ranges from 0°, 90°, 0°, 180°5The symbol of the scale number is north latitude n, south latitude s east longitude e, west longitude w6The boundary that divides the hemisphere is the equator (0° parallel) and the meridian coil formed by 20°W and 160°E.

North of the equator in the Northern Hemisphere, 20°W east to 160°E is the Eastern Hemisphere.

South of the Southern Hemisphere 20°W west to 160°E is the Western Hemisphere.

7.Directions: Indicates East and West, Indicates North and South.

Generally, left, west, right, east, generally up, north, down, south.

1.b The meridian is half a circle and the latitude is a circle, because the earth is a sphere, so the latitude becomes shorter from the equator to the poles, and the meridian is of equal length.

A, C must be wrong, you know, so choose.

Question 1: B a meridian is a semicircle, and two opposite meridians are a circle. c. Different warp threads are of equal length. d Different parallels are of unequal length, and the length is decreasing from the equator to the poles.

Question 2: d a can't go north when you reach the north pole. b Except for the North and South Poles. c. The length of the global meridian is equal.

First of all, the first question should be chosen A, the reason is to simulate a globe, you can see that the meridian always shows a circle, and the latitude is not, in the north and south poles it is a point, and there are different meridian lengths that are equal, and different parallels are not equal in length.

The second question is d from the first question can exclude c, and then a and b can be seen to be obviously incorrect, any meridian northbound must pass through the north pole, this will have a direction problem, in the north pole in any direction is south, that is to say, it is impossible to return to the origin, and b is even more wrong, you can know it by seeing the analog globe.

Summary. Kiss <>

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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.

East and west are latitudes, and north and south are longitudes. The long latitude is the equator yo <>

The first geographical meridian, what the latitude line indicates, what the direction is, what is the length, what...

Kiss <>

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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.

East and west are latitudes, and north and south are longitudes. The long latitude is the equator yo <>

Kiss <>

<> extension information of latitude and longitude: the criss-crossing lines on the globe determine the meridian and latitude: according to the concept of meridian and latitude, the meridian indicates north and south, and the latitude indicates east and west, so the up and down lines on the globe are the meridians, and the lines in the left and right directions are the latitudes.

If the value is increasing towards the east, it is the east longitude; If the value is larger and larger to the west, it is the west longitude. <>

<> if the value is larger and larger to the north, it is the northern latitude; If the value is larger and larger to the south, it is the southern latitude. <>

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. Since the equatorial plane is perpendicular to the Earth's axis, and all parallels are parallel to the equator, any one of the parallels represents the east-west direction on 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.

This angle is equivalent to the angle at which the equatorial arc between these two planes stretches at the center of the earth. East of the prime meridian is called east longitude, which is represented by "e"; The west is called the west longitude, which is represented by "w". The circumference of the earth is 360°, so the east and west meridians are 180°.

On a globe, the circle that circles the globe in an east-west direction is called the parallel. The parallels indicate the east-west direction, both are circles, the length is long and short, the equator is the longest, and gradually shortens towards the poles, and finally becomes a point. The meridian is the line on the globe that connects the north and south poles and intersects perpendicular to the parallel, also called the meridian.

The meridians indicate the north-south direction, are semicircular, and are all equal in length. How can you tell the difference between the numerous warp and weft threads? The method of calibrating the degrees of longitude and latitude was adopted, which was called latitude and longitude.

Longitude and latitude are both an angle. The latitude is a linear angle, and the starting point is the equator. The latitude of a point on Earth is the angle between the plumb line of that point and the plane of the Earth's equator.

The equator is a zero-degree latitude, and the latitude is 90° north and south, the latitude to the north of the equator is called north latitude (n), and the latitude of the north pole is 90°n; The latitude to the south is called the southern latitude (s), and the latitude of the South Pole is 90°s. Longitude is the angle between two meridian planes. In 1884, the international conference negotiated and decided to start with the meridian that passed through one of the main meridian cross wires at the original site of the Greenwich Observatory in England, which was called the prime meridian.

The longitude of a point is the angle between the plane of the meridian and the plane of the prime meridian at which the point is located. The longitude is divided into 180° east and west from the prime meridian, with the east of 180° belonging to east longitude (e) and west longitude to west (w).

On the globe, you can see criss-crossing lines, which are the latitude and longitude lines. The line connecting the north and south poles is called the meridian line. The thread perpendicular to the warp is called the weft. The weft is a circle of varying lengths. The longest parallel is the equator.

Weft warp.

1.The shape is round and semicircled.

2.The size of the equator is up to 40,000 kilometers and is equal in length, 20,000 kilometers.

The poles of the net are gradually shortened to 0 km.

3.The boundaries of the scalar equator (0° latitude ° longitude.

East longitude is north latitude, south latitude 0° east and 180° west.

0° West and 180° East is the west longitude.

4.The scale number ranges 0°, 90°, 0°, 180°

5.The symbol of the scale number is north latitude n, south latitude s east longitude e, west longitude w

6.The boundary that divides the hemisphere is the equator (0° parallel) and the meridian coil formed by 20°W and 160°E.

North of the equator in the Northern Hemisphere, 20°W east to 160°E is the Eastern Hemisphere.

South of the Southern Hemisphere 20°W west to 160°E is the Western Hemisphere.

7.Directions: Indicates East and West, Indicates North and South.

Generally, left, west, right, east, generally up, north, down, south.

The longitude ranges from 0° to 180°, and the degree is increased from the 0° meridian to the east and west. The one west of the 0° meridian is the west longitude, and the symbol is w; The east is the east longitude and the symbol is e.

The latitude ranges from 0° to 90°, and the degree increases from the 0° latitude (equator) to the north and south poles. The north of the 0° latitude is the north latitude, and the symbol is n; The south is the southern latitude and the symbol is s.

The scale range of the meridian is 0 to 180, divided into east longitude and west longitude, the British prime sub-bus is the starting point of 0 degrees, the 0 degree meridian line increases to the east degree is the east longitude, and the increase to the west degree is the west longitude. Longitude 180 E and 180 W coincide.

Latitude, scale range 0 to 90Decreasing from the equator to the poles, the equator is the longest parallel.

The scale range of the warp is 0--180

The scale range of the weft is 0--90

The variation law of longitude degree is based on 0 degree longitude, east longitude to east, and west longitude and latitude degree to west is based on the equator, north is north latitude, and south is south latitude.

1, Tongtong let a game block.

Meridian. Parallel.

The difference is about 111 km

2. On the same parallel, the distance between the meridians is about 111cos km for the latitude of the parallel).

3. Different. Warp and weft lines. Use. Ruler.

amount, according to. Scale.

Compute. If there is no scale, use step 1 to calculate the proportion of the scale.

The following description of the 0° parallel and the 0° meridian is correct (b)a, the shape of the 0° parallel is a large circle, and it is the dividing line between the northern and southern hemispheres, which of course divides the earth into two. The shape of the 0° meridian is only a semicircle, and only two opposing meridian coils can divide the earth in two.

option c, see option a.

Option d, the dividing line between the eastern and western hemispheres is a meridian coil consisting of 20°W and 160°E.

The landlord will not not understand the definition of this question, it is recommended to look at the definition of longitude and latitude, and how to divide the northern and southern hemispheres and the eastern and western hemispheres.

b The length of the 0° parallels is twice as long as the 0° warp.