The plane passed through the North Pole to the United States, in which direction did it fly after pa

If the plane will also pass through the North Pole to the United States, after passing the North Pole, which direction should the plane fly?

A. BSouth.

On the polar map, it is necessary to judge the southeast, northwest, and northwest according to the latitude and longitude.

Looking down at the globe from above the poles: the meridians are straight lines, the parallels are circles, the meridians indicate the north-south direction, and the parallels indicate the east-west direction. At the center are the North Pole and the South Pole.

Looking down at the Earth over the South Pole, it rotates counterclockwise, and over the North Pole, looking down at the Earth rotates clockwise.

1.On the same meridian only north and south, (east and west directions are the same) 2Only things are judged on the same parallel. (Same in the north-south direction) 3It is necessary to judge neither in one longitude nor in one parallel, east and west, north and south.

The same direction of rotation is "East", and the opposite is "West". Approaching the North Pole is "heading north", leaving the North Pole is "heading south"; Approaching the South Pole is "southward" and leaving the Antarctic is "northward". The North Pole is surrounded by "south"; The South Pole is surrounded by "North".

Hope it helps.

The United States is to the west of Europe.

So the best route is: northwest first, then southwest.

In fact, you don't need to go through the North Pole, you just need to be close to the North Pole.

Option BConversely, if you're flying from the U.S. to Europe, the best route is to head northeast and then southeast.

To the south, because at the north pole towards that place is south.

For those who depart from China to the United States by plane, there will definitely be a question as to why they fly around the North Pole instead of walking in a straight line. After reviewing the information and data, it was found thatFirst of allThe straight-line distance from China to the United States is not the closest, and the safety factor across the Pacific Ocean is low.

From the map, crossing the Pacific Ocean is the closest route. However, the fact that the Earth is round means that the shortest distance you can see on a map is actually not necessarily short. When an airplane calculates its range, the path is called a great circle route, which is simply used as a sphere to calculate the path.

It is calculated that the route through the Arctic Circle is 4,000 kilometers less than a straight line, and there is a jet stream over the route, so the aircraft can maintain high speeds with the help of the aircraft, saving time and fuel consumption. In other words, walking from the Arctic Circle is not only closer, but also cheaper for the crew and faster flight time, so why not?

Of course, in addition to the distance factor, the biggest reason for not going straight is because of safety factors. The ocean climate is changeable, rain or shine, which can easily cause delays, and the changeable weather is also a test for flight. In addition, according to the existing route around the Arctic Circle, the air under the route is all land, in case of any sudden situation, you can find a suitable airport or even an air-to-ground diversion at any time.

If the route is changed to cross the Pacific Ocean, it will not be said to be temporary maintenance, and there will be no possibility of even diversion. In the event of an accident, apart from the forced landing on the sea, all that is left is to pray.

Therefore,The domestic route to the United States chooses to detour around the Arctic Circle, mainly due to safety considerations. After all, transportation is risky, and it is better to take a guaranteed route than to have waves in the sky. Moreover, after so many years of aviation development, there are still no parking platforms and transit stations in the Pacific Ocean, which shows that the sea area is not as simple as we imagined.

Why does China's flight to the United States not directly cross the Pacific Ocean, but circle the North Pole?

Because the earth is circular, although it seems that there is a straight line between China and the United States, in fact if it takes a straight line, it will make a big bend.

It's not the closest to walk in a straight line, I talked about this knowledge point in my geography class in high school, because the earth is a sphere, and walking curves is the closest.

For the sake of safety, if there is an accident in the middle, the plane cannot land, take a detour to the South Pole, and if there is any problem in the middle, you can land at any time.

Airlines are looking for cost savings, and the Arctic has a perennial westerly wind, which allows planes to reach the United States faster and more fuel-efficient。If you fly from the short Pacific Ocean to the United States, it will take more time and the fuel cost will be higher. The most important safety issue is the unpredictable climate in the Pacific Ocean, and once the plane is in danger and there is no forced landing, it will take a long time for rescue forces to arrive.

When airlines in various countries formulate routes, the first must comply with the control of international aviation, and the second is to consider the cost, in order to minimize the cost of flight under the premise of ensuring safety, the general airline will choose the shortest route. Third, the development of routes should also consider safety issues, because the climate of each region is different, and the weather is also changeable, so air routes will generally choose routes with relatively stable weather conditions.

However, the flight of an airplane is not only affected by its own factors, the forces of nature can be devastating or greatly facilitating the flight of an airplane. The route from Shanghai to New York, although it seems that the flight path is very long, but in fact it does not take long, mainly because in the middle latitudes of the northern hemisphere, there is a high-altitude jet stream at the top of the troposphere, and this jet stream is blowing westerly winds all year round, with the help of this westerly wind, the plane can reach a very high speed, so although the distance of the plane is very long, but the time required is shorter, and the fuel consumption is also less.

Nature's devastating strike aircraft is very unfavorable for the flight of the aircraft, usually the plane is destroyed and people die, and the survival rate is extremely low. Therefore, there is another important reason why the plane does not go directly to the Pacific Ocean, and that is the issue of safety. According to the current route, even if you encounter any unexpected situation, you can still find many large airports as alternates.

But if you cross the Pacific Ocean, there are no alternate airports here, and if there is an accident, the consequences are unimaginable.

From the perspective of economic cost, going around the North Pole can save airlines money, in fact, aviation planes flying in the air and cars on land are the sameYou will have to pay for the route of another country during the flight, and flying from the North Pole can save this part of the cost.

Flights between China and the United States, the shortest flight distance between crossing the Pacific Ocean, and circumnavigating the North Pole is equivalent to sparing a long distanceIt is very inconsistent with normal logical considerations, and to understand this problem, we need to know what factors are considered in the planning of the voyage. The control of international aviation, economic costs, and the formulation of routes are all very important factors, and various issues should be considered comprehensively when choosing flight routes.

Although the route from China to the United States seems to have increased the flight route, the actual time to go back and forth is about the sameThis is mainly because there are factors that can help the aircraft accelerate in the middle latitudes of the northern hemisphere, there is a high-altitude jet stream at the top of the troposphere, and the aircraft enters a better flight state with the help of this westerly wind, and the speed of the aircraft is higher than usual, so although the flight distance of the aircraft is very long, the time required is shorter, and the fuel consumption is also less.

Aside from the economic cost factor, there is another important reason why the plane does not go directly to the Pacific Ocean, that is, there is a better flying environment for flying from the Arctic. Fly according to the current route, and if there is an accident, you can still find the nearest landing site as an alternate landing. But if you cross the Pacific Ocean, this is a vast sea, there is no landing place here, and there is no remedy in the event of an accident.

Why didn't the Chinese plane fly to the United States directly over the Pacific Ocean and go around the North Pole?

This is to shorten the route to save fuel, the other is that the air route is not arbitrarily determined (coordinated by the Civil Aviation Administration of various countries and the World Aviation Federation), there will be no-fly zones and aviation identification zones along the way, these areas of civil aviation and the air force of other countries can not fly, because there are anti-aircraft missiles here, flying here may be shot down, so sometimes to save fuel to shorten the route, and sometimes to avoid danger and respect the territorial airspace of other countries!

Civil airliners carry many people on land, and they can make an emergency landing if something happens, and if something happens at sea, it will be over.

If you don't go around the North Pole, you have to cross the Pacific Ocean, and the route must be the most conducive to flying.

Civil aviation and the air forces of other countries in these regions are not allowed to fly, because there are anti-aircraft missiles here, and they may be shot down if they fly here, so sometimes they shorten the route in order to save fuel, and sometimes they shorten the route to avoid danger and respect the territorial airspace of other countries to save fuel, and the other is that the air route is not arbitrarily determined (coordinated by the Civil Aviation Administration of various countries and the World Aviation Federation), there will be no-fly zones and aviation identification zones along the way, and the civil aviation and air forces of other countries in these regions cannot fly. Because there are anti-aircraft missiles here, they may be shot down if they fly here, so sometimes they shorten the route to save fuel, and sometimes they want to avoid danger and respect the airspace of other countries.

It's to shorten the distance, or to dodge the first, yes! Some special regions!

Most of the planes will choose to fly along the coastline, there is a possibility of rescue in an emergency, you fly in the middle of the Pacific Ocean, the wind is strong and the climate is bad, and there is something to do.

It's not necessary, it's just the shortest route you need.

Not a must, but the shortest straight line when needed.

The route is short, fuel-efficient, and crowded!

Probably that's the shortest route.

If the plane takes off from the South Pole, theoretically speaking, if it flies in a straight line, the plane will definitely return to the original point, because the Earth is a sphere, and it can return to the original point no matter which direction it flies.

The plane can return to its original location as long as it does not change its direction, because the earth is round, and if it takes off from the equator, it can also return to the equator.

b.Reach the South Pole.

Analysis: A plane starts from the island near the North Pole and flies south, then the plane will eventually reach the South Pole, if it is to return to the departure point, then from the South Pole to the north, it will not fly all the way to the south, and it is impossible to stay on the equator, so choose B. This question tests knowledge about the direction of the earth.

Question B Analysis: Since the north-south direction is indicated and all meridians intersect at the poles, an airplane departs from an island near the North Pole and flies south, which is actually flying along the meridian, then it will be able to reach the South Pole.

Comment: This question can also examine the meridian (meridian): on the globe, the semicircle that connects the north and south poles and intersects perpendicular to the parallels.

Characteristics of the warp: (1) Shape: semicircle; (2) Length:

All meridians are equal in length, and the length of the meridian is equal to half the length of the equator (20,000 km). Warp coil: Each corresponding 2 meridian lines form a warp coil, and each meridian coil can divide the earth into two hemispheres, but the condition is that the sum of degrees is 180°, divided into east and west meridians.

From the flat map, the Transpacific Ocean is the closest route for flights from China to the United States, but in fact, the routes of flights between China and the United States are all detours to the North Pole. A closer look reveals that this is the smartest choice for airlines, and that the best route for flights from China to the United States is to take a detour to the North Pole. What's going on?

First of all, it is not the nearest route from China to the United States across the Pacific Ocean, it turns out that the world map we usually see does not truly reflect the actual distance of the earth, the earth is a sphere, and the world map we usually see is flat, and there is a great deviation from the projection from the sphere to the plane when making the world map, so it is inaccurate for us to measure the distance from the flat world map.

Secondly, why is it said that the plane departs from China to the United States through the North Pole is the nearest route, we can use the globe or the software that simulates the earth, to understand, let's take Beijing and Washington as an example, we connect Beijing and Washington to see, if the line between these two points on the map is a straight line, but on the globe the line between Beijing and Washington is an arc, the software automatically shows that the shortest distance of the line is through the Arctic region, That's about 11,090 kilometers, so how far would it be if we drew a line across the Pacific Ocean? Beijing and Washington are located near the 40th parallel north latitude, and we only need to cross the Pacific Ocean from Beijing all the way east along the 40th parallel north latitude to reach Washington in the United States, so the distance is about 14,315 kilometers, so we can easily see that the nearest route from Beijing to Washington is through the Arctic region, which is shorter than the one that passes through the Pacific Ocean, and if the speed of the plane is 900 kilometers per hour, it can save three and a half hours.

Why is the route through the Arctic the closest? We can use the solid geometry theorem to explain it, that is, the shortest distance between two points on the sphere is the great circle inferior arc through these two points, the great circle is the circle on the sphere that was originally located in the center of the sphere, and the corresponding is the small circle, the small circle is the circle that did not pass through the center of the sphere, the inferior arc is the arc with an arc less than 180 degrees, the superior arc is the arc with an arc greater than 180 degrees, Beijing and Washington can be regarded as two points on the earth plane, and the great circle inferior arc between them passes through the Arctic region, And the line across the Pacific Ocean at 40 degrees north latitude is not a large circle or an inferior arc, but a small circular inferior arc, so it must not be the closest distance, many long-haul flights are flown like this, this is called the great circle route, so that the shortest distance of long-distance flight is of course the most economical.