Geography questions, ask for advice, geography masters

At sunrise in Beijing, the day is 9 hours and 10 minutes long, and it is estimated that the time is around November or January.

Beijing latitude 39°26'to 41°03'Left and right, the latitude is basically the same as that of Urumqi, so the day length of the two places is also about the same. Therefore, the sunrise and sunset times are the same in the two places, which are minutes and 16:35 respectively.

Urumqi east longitude 87 degrees, Beijing east longitude 120 degrees, a difference of 33 degrees, just about two hours, so Urumqi local time at 16:35 sunset, Beijing has sunset for two hours, Beijing time at 16:35 on the basis of 2 hours, so get 18:35. Hope.

First of all, half of the day length in Beijing and Urumqi should be 12-(7:25-16)=4:51.

The difference between Beijing time and Urumqi is (120-87)*4=2:12.

Sunset time = 12 + 2 hours 12 minutes + 4 hours 51 minutes = 19 hours 3 minutes.

The answer is definitely correct.

Beijing is 116 degrees east longitude, 29 degrees away from Urumqi, a difference of four minutes, a total of 116 minutes, that is, one hour and 56 minutes. Beijing sunrise at 7:25, then sunset at 16:35, the latitude difference between Beijing and Urumqi is not much, so Urumqi is also at about 16:35 sunset, so we know that Beijing is already 18:31.

The longitude of Beijing is 116°23 east longitude, so the final answer is 18:31, which is similar to the friend just now, so I won't say much. One thing to remember is that a difference in longitude of one degree is a difference of 4 minutes in time, and a difference of 15 degrees in longitude is a difference of 1 hour. Hope it helps.

Why did I, a junior in high school, calculate 18:35?

1. The key to this question is to determine the coordinates of the O point.

The only point that satisfies the condition of "intersection of any two warp coils" is the pole, so a is the pole.

According to the tangent point of b is the great arc of the earth and the 52°s latitude coil, the latitude of point b is 52°s, and the figure shows the great circle of the earth, and the pole in this hemisphere is close to 52°s, so point a should be the south pole.

Point O is the center of a great circle, and the O should be in the same meridian coil, so the latitude of Point O is 90-52 = 38°s

When the east and west dates of point b are different, the old and new date ranges are equal around the world" This sentence gives two pieces of information:

There are different times and the same times when the dates on the east and west sides of point b are the same, and it is deduced that the meridian where point b is located is not a 180° line. (The vast majority of the dates on both sides of the 180° line are different, and the old and new date ranges are all different around the world) then it is certain that the 0 time line.

The 0 time line is on the same meridian as the 180° line of the International Date Line. Divide the Earth into two hemispheres, with equal ranges of old and new dates around the globe.

From this, it is inferred that o is on the 180° longitude and b is on the 0° longitude.

So, the coordinates of point o are (180°, 38°s) and belong to the South Pacific Ocean.

The hemisphere centered on point O has a small land area and a large ocean area. Problem solving.

2. A can be concluded to be an island country in Oceania according to the coordinates of point O, and if you are familiar with the map, you can further determine that it is New Zealand.

Located at the junction of the Indian and Pacific tectonic plates, it is the boundary of extinction, not growth. What is not correct is A.

Answer: Lin Xi's husband, a classmate, was wound in, and the latitude of point O was not correct. But the idea of solving the problem is completely correct. I'll go through it again along his lines of thought and point out the trap he fell into.

First of all: from "a is the focus of the two meridians", a is the pole. （1）

Secondly, from "b is the tangent between the great arc of the sphere and 52°s", the latitude of point b is 52°s. （2）

Then: from (1) and (2), a and b latitude differences of less than 90° to get a as the south pole. （3）

Then: from "o is the center of the circle" and (2) and (3), it is obtained that o is 38°s, note that the latitude difference between 52° is 90°, and the latitude difference between AB is 90°-52°=38°, so the latitude difference between the two points of OA is 90°-38°=52°, so the latitude of point O is equal to the latitude of point A-52°=38°s. （4）

Then: from "when the dates on both sides of point b are different, the global date range of the old and new two days is equal":

If the two-day date range of the world is equal, that is, the international date line and the meridian at 0 o'clock divide the earth equally, so the meridian at 0 o'clock is the other side of the date line, that is, the 0° meridian, and the 0° meridian is 0 o'clock in local time.

For this to be true, point b must be on the 0 time meridian. (Note that if b is on the 180° meridian, the whole world is on the same date, which is not in line with the title.) O and b are on the same warp coil with a longitude of 180°.

So the coordinates of point b are (0°, 52°s) and the coordinates of point o are (180°, 38°s).

Therefore, in question 1, the coordinates of point o are (180°, 38°s), and most of the great circle centered on o is in the southern hemisphere, and the ocean area is vast, so item b is correct. Items a, c, and d describe the Northern Hemisphere. Therefore, this question is selected B.

Question 2, point o coordinates are (180°, 38°s), located in the Pacific island country of New Zealand. New Zealand is an economically developed country; It belongs to the temperate oceanic climate, suitable for the growth of succulent pastures, and the dairy industry and large pasture grazing industry are developed; New Zealand is located at the junction of the Indian Ocean Plate and the Pacific Plate, which is the extinction boundary. Therefore, the statements b, c, and d are correct, and the statements of a are incorrect.

So choose A for this question.

Finally saw a somewhat interesting question I know that there are few guest officers of this level :) Do you want to give some rewards or something? Ha ha.

First of all: from "a is the focus of the two meridians" - a is the pole (1).

Secondly: from "b is the tangent between the great arc of the sphere and s52 degrees", it is concluded that point b is 52 degrees south latitude (2).

Then: from (1) and (2) --a is the south pole (3).

Then: from "o is the center of the circle" and (2) and (3) --0 is 38 degrees south latitude (4) [90-(90-52)].

Then: from "when the dates on both sides of point b are different, the global date range of the old and new two days is equal":

First of all, if the global dates are different, the dates on both sides of the date line must be different.

Secondly, if the two-day date range of the world is equal, that is, the date line and the meridian at 0 point divide the earth equally, so the meridian at 0 point is the other side of the date line, that is, the 0 degree longitude.

Third, for the condition to be true, point b must be at the 0 degree meridian.

So: from "when the dates on both sides of point b are different, the global date range of the old and new days is equal" - point b is at 0 degrees of longitude, so b is at s52, and the point (5) is 0

And since a is the south pole, o is on the 180 degree longitude, so o is at s38,180 points (6).

Then, once the meaning of all the conditions given is clear, the problem can be solved:

The hemisphere with point O as the center of the circle is the hemisphere with the point S38,180 as the center, that is, with the South Pacific Ocean as the center, of course, it belongs to the sea hemisphere: so the first question is selected b (Rich forests, large populations, and large continents all belong to the continental hemisphere; So if you play a trick, you can choose it directly)

The second question asks the wrong one, and the two AB items are just opposite, and it is impossible to be correct at the same time, so the answer must be between AB, then, point o is near the junction of the Pacific plate and the Indian Ocean plate, if you remember the figure, you will know that it belongs to the convergence boundary, that is, the extinction boundary, so choose A

So far, 1, b; 2, a, it's OK

There are about 5 knowledge points and 6 solution points in this question, which belongs to the difficult type from the topic, but because the answer is set with skills to follow, it is not difficult to do, from the question it already belongs to the category of 10% to do it right, but from the option of the answer, I think it can be up to 40%, if you don't know this kind of question, don't delve into it, grasping the foundation is the key!

I have marked the above steps, and if you don't understand which step, ask me again

Okay, I'll admit that I made a little mistake, but plagiarism is shameful, and looking upstairs is self-respecting

Because when flying over the morning and dusk line, it is 19 o'clock on the 8th, indicating that the days and nights in the northern hemisphere are short, and the crossing is the dusk line, so it can only be b

According to the information in the figure, it can be known that the time of crossing should be 19 o'clock in the district time of the East 10th District, the time of the East 10th District for 6 hours is 1 o'clock on the 9th, Chicago is in the West 6th District, and the time difference between Chicago and the East 10th District is 16 hours, and the time of the East plus West is subtracted, then the Chicago time is 9 o'clock on the 8th.

There is no beginning and no end, what about the original title? You can see it.

There is no beginning and no tail.

Wait for the master to see how to answer.

Because the sun shines directly on the southern hemisphere, the polar day phenomenon occurs here, and it can be known that when the solar altitude angle is the smallest, the sun is due south.

This problem can be solved by elimination: b and c are not possible because they are not within the circle of latitude where the polar day phenomenon can occur.

When the polar day occurs at 90° south latitude, the sun moves in a straight line and the angle remains unchanged, so the answer is a can also be directly calculated: the sum of the maximum and minimum solar altitude angles of a point in the polar day area is twice the geographical latitude of the direct point, then 38°+8°=46°, the latitude of the direct point is 23°s, and then the latitude of the place can be calculated as 75° according to the relevant formula of the solar altitude angle

（40°w ，40°n） b(20°e，20°s) c（40°w，0°）

2。Point A Northern Hemisphere, Western Hemisphere, Point B Southern Hemisphere, Eastern Hemisphere (Analysis: East of 20 degrees west longitude and west of 160 degrees east longitude are the eastern hemisphere; East of 160 degrees east longitude and west of 20 degrees west longitude is the Western Hemisphere. The equator is the dividing line between the northern and southern hemispheres. ）

3。C is located due south of A, and C is located northwest of B.

The answer is reliable and unclear, you can continue to ask me.

Dear, the longitude you added to your question is wrong!

Can you post a clear picture?

I can't see it clearly.

1. From the analysis of the topography, for example, the plains are hilly and mountainous, and the plains are suitable for the development of agriculture, and then the distance from the water source is also precipitation.

2. What is the main thing about shelterbelts to prevent wind and sand, maintain water and soil, and protect the ecological environment 3. These three are positively correlated Then the planting area is getting larger and larger, the precipitation is more, the yield is high, and I make it up by myself I liked geography in high school Now I'm a senior I can't remember how to answer this question when I see it.

Study hard It is very important to get into a good university.