Geography topics, good at geography. ，

Examples of land and sea transitions:

1. The ocean becomes land: people have found fossils of ancient sea creatures in the Himalayas, indicating that this was the ocean (ancient Mediterranean) before

2. The land has become a mantra: The fossils of mammoths and woolly rhinoceros have been found on the seabed of the East China Sea, indicating that this was once land.

3. Human activities: The Dutch people reclaimed the land from the sea.

Continental drift theory: important evidence (1) the contours of the world's continents are flattened;

2) paleontology on both sides of the Atlantic Ocean echoed each other;

3) Paleostrata on both sides of the Atlantic Ocean echo each other;

As can be seen from the figure, the wind bands of each pressure belt have moved southward, indicating that it should be around the winter solstice in the Northern Hemisphere.

11.Barometric pressure zone 2 is a subtropical high pressure zone with a sinking direction and dry nature. A correct.

12.Around the winter solstice in the Northern Hemisphere, the Mekong River in Southeast Asia is affected by the tropical monsoon climate, with the summer being the flood season and the winter being a dry season. c correct.

It is the equatorial low pressure zone, 2 is the subtropical high pressure zone, and between the two pressure zones is the trade wind belt, and the East African Plateau is located near the equator and is not controlled by the trade wind belt, (the cause of its savannah climate is the formation of high terrain). A correct.

This is a subtropical high pressure zone, sinking, characterized by hot and dry stuffiness.

Analysis: The direct point of the sun moves in the same direction as the barometric pressure zone, roughly in January, one, the Paraná River is impossible! Its dry season is August September! Flood season from December to February!

Second, the Congo River flows through the tropical rainforest area, and the water volume is extremely large all year round! It's impossible to talk about dry periods!

Third, the Mekong River Basin is located in the center of the Asian tropical monsoon region, which is wet and rainy due to the southwest monsoon from the sea at the end of May and September, and the rainy season is May and October. November In mid-March, the northeast monsoon from the mainland was affected, and it was dry and rainless, and November was the dry season in April.

Fourth, the Rhine River is full of water all year round, so it is the Mekong River!

The Sahara Desert is in the Northern Hemisphere.

Brother, you don't have a picture.,Why didn't my sisters help you answer.。。

Located in the western part of China, with an average altitude of 3,500-4,800 meters, the Sanjiangyuan region is the hinterland of the Qinghai-Tibet Plateau, the roof of the world, and the southern part of Qinghai Province. It is the world-famous river that nurtured the Chinese nation and the long civilization history of the Indochina Peninsula: the headwaters of the Yangtze River, the Yellow River and the Lancang River.

On the Tibetan Plateau, solar radiation is strong, so the "light" resources (sunlight) are abundant, but the "heat" resources (temperature) are insufficient, because the altitude is too high and the temperature is low.

Sunlight does not equal temperature.

c Correct answer.

b is not true, because the Sanjiang Plain, due to its dimensions, has less annual sunshine than in the lower latitudes, and its winters are longer, five to six months of the year are winter, in the words of the common people, the days are short, the sun rises and sets early.

Only C, in B, because of the high altitude and low temperature in the Sanjiangyuan area, the heat resources are not sufficient.

Yes, the Qinghai-Tibet Plateau is only full of sunlight and lacks heat.

Knowledge points: The shadows at the apex of the morning and dusk lines are all due south or north.

Answer: The shadow of the AC is due north. From the direction of the morning line and the coordinates of point A, it can be seen that this is the winter half of the northern hemisphere, the range from point A to the south pole is the polar day (A is the intersection of the polar day and the night hemisphere), the sunlight is due south, and the shadow of point A is due north.

From point C to the north pole is the polar night (C is the intersection of the polar night and the day hemisphere), Yangguan is also shot from the south of Zhengdong Jinsheng, and the shadow is in the direction of Zhengna's old north.

1) Since the direction of the earth's rotation in the above figure is clockwise (north and south), so the above figure represents the Antarctic region, at this time, there is a polar day in the South Pole, which is what we call the winter solstice, and then look at the direction of its rotation and the distribution of day and night, it is not difficult to see that DE is the morning line and DC is the dusk line (2) From the direction of its turning, the longitude interval between D and A is less than 180°, judging by the basic orientation (you can see it as an ordinary map, according to the principle of going up, north, down, south, left, west, right, east, it is not difficult to see) A is located in the northeast direction of D.

Answer: On the winter solstice or December 22, DE is the morning line and DC is the dusk line.

A is located northeast of D.

Geography is his sister's good.

According to the direction of rotation (north against south), it can be judged that this side is the south pole, and the polar day at the south pole is the winter solstice.

1) Winter Solstice (December 22); Morning line (night to day); Dusk line (day to night).

2) Northeast.

1] Winter solstice, morning and dusk [2] Northeast.

This is the polar day of the North Pole.

1) Winter solstice: morning and dusk.

2) Northeast. This is the polar daytime phenomenon

The North Pole turns from west to east, and if you look at this picture, it's the North Pole. At this time, the North Pole is the polar day, so it is the light situation on the summer solstice. DE represents the dusk line, and DC represents the morning line. A is located southeast of D.

1) Winter solstice 2) morning 3) dusk 4) Northeast.

What grade does the landlord have? I'll do it all, it's like the knowledge of the first year of junior high school.

Winter solstice day morning line dusk line northeast.

The image below is a "polar-centric light map". Read the picture and complete the following questions.

1) This graph shows the light on December 22 (or winter solstice). In the figure, DE represents the morning line, and DC represents the dusk line.

2) A is located in the northeast direction of D place.

To give you the answer:

1 。Daqing Oilfield——

Heilongjiang. Liaohe Oilfield ——— Liaoning.

North China Oilfield ——— Hebei.

Shengli Oilfield ——— Shandong.

Yumen Oilfield——— Gansu.

Karamay Oilfield ——— Xinjiang.

2.Inner Mongolia Plateau ——— grassland.

The middle and lower reaches of the Yangtze River plain ——— cultivated land.

The Great Khing'an Mountains ——— woodland.

Jiangxi Geography Paper 1.

Class Name.

1. Multiple choice questions (12 marks).

1. China's southern land neighbor is (

a, Malaysia, Thailand, Cambodia b, Myanmar, Thailand, Laos.

c, India, Pakistan, Afghanistand, Myanmar, Laos, Viet Nam.

2. The difference in latitude is 110 kilometers, and the distance between north and south in China is about (

A, 5500 km B, 500 m C, 5000 m D, 4500 km.

3. There are two abbreviations of the provincial administrative unit is (

A, Fujian, Shaanxi B, Sichuan, Qinghai.

c, Yunnan, Gansu d, Henan, Guizhou.

4. The province bordering both Russia and North Korea is (

A, Jilin Province B, Heilongjiang Province C, Liaoning Province D, Inner Mongolia.

5. The three main peninsulas in China are located in which three provinces ( ).

A, Shandong, Jiangsu, Zhejiang, B, Jiangsu, Zhejiang, Hebei.

c, Liao, Hebei, Lu D, Liao, Lu, Guangdong.

6. The most widely distributed ethnic minorities are (

A, Mongolian B, Uyghur C, Hui D, Zhuang.

7. Which of the following ethnic groups has a population of more than 4 million (

A, Bai B, Buyi C, Tujia D, Korean.

8. Which of the following ethnic groups believes in Islam (

A, Tibetan B, Mongolian C, Yi D, Uyghur.

9. The most populous ethnic minority in China is (

A, Han B, Hui C, Zhuang D, Manchu.

10. The most populous provincial-level administrative regions in China are (

A, Hunan B, Chongqing C, Lu D, Yu.

11. Among the following provinces and regions, the highest population density is (

A, Su B, New C, Black D, Tibet.

12. China's population distribution and which of the following resources?

The distribution is the same (

A, arable land B, non-ferrous metals C, coal D, oil.

2. Fill-in-the-blank questions (19 marks).

1. Among the four municipalities directly under the central government in China, the capital is on the verge of the Bohai Bay and the East China Sea

The area is the largest

2. The distribution of various ethnic groups in China is characterized by the provinces with the largest number of ethnic minorities

3. The vast majority of China's territory is in the belt of the five belts, and all of them are in tropical provinces.

4. A province that is both the source of the Yangtze River and the source of the Yellow River is a province that has both land borders and seafronts

5. The provinces located at the mouth of the Yellow River are the municipalities directly under the central government located at the mouth of the Yangtze River

6. The easternmost and northernmost parts of our country are in the province, and the westernmost part is included.

7. The ethnic minority with the smallest number of Chinese is ethnic group. Mainly distributed in (fill in the provincial administrative districts).

8. The largest island in China is the strait to the west.

3. Connecting questions (6 points).

1. Connect the borders of the country with our country with a line.

a. Afghanistan to the north.

b. Myanmar West.

c. Russia West d

1.Replace the following provinces with the corresponding days.

The zones are connected by straight lines.

Daqing Oilfield - Heilongjiang.

Liaohe Oilfield ——— Liaoning.

North China Oilfield ——— Hebei.

Shengli Oilfield ——— Shandong.

Yumen Oilfield——— Gansu.

Jianghan Oilfield - Hubei.

Karamay Oilfield ——— Xinjiang.

2.The following areas are connected in a straight line with the main land use types.

Inner Mongolia Plateau ——— grassland.

The middle and lower reaches of the Yangtze River plain ——— cultivated land.

The Great Khing'an Mountains ——— woodland.

1.Connect the following provinces and regions with straight lines.

Daqing Oilfield, Daqing City, Heilongjiang Province.

Liaohe Oilfield, Panjin City, Liaoning Province.

North China Oilfield, Renqiu City, Hebei Province.

Shengli Oilfield, Dongying City, Shandong Province.

Yumen Oilfield, Jiuquan City, Gansu Province.

Jianghan Oilfield, Qianjiang City, Hubei Province.

Karamay Oilfield, Karamay City, Xinjiang Uygur Autonomous Region.

2.The following areas are connected in a straight line with the main land use types.

Inner Mongolia Plateau ——— grassland.

The middle and lower reaches of the Yangtze River plain ——— cultivated land.

The Great Khing'an Mountains ——— woodland.

For noon, if the time zone is located in the longitude, there will generally be 12:00 for the mid-day time, but because of the difference in latitude and longitude, the mid-day time is not 12:00 noon

According to the sunrise and sunset, it can be calculated that the mid-heaven time is exactly 12:00, and then the local longitude can be found as the longitude of the time zone [Beijing time, it is 115°].

You did not provide the date of sunrise and sunset, because the date, geographical location will affect the calculation of sunrise and sunset. So your question is missing a condition.

But if you calculate strictly, there is no shortage of conditions, and you may not know the specific algorithm [in my blog].

If your time is Beijing time, since your sunshine duration is 14 hours much greater than 12 hours, therefore, it cannot be the spring and autumn equinoxes, nor can it be near the equator, it can be concluded that in the Northern Hemisphere it is "nearby" the summer solstice, near the middle latitudes, and the reason why it is not high latitudes is because high latitudes will have polar days and nights.

If you want a special point, you can preliminarily set it near the Tropic of Cancer.

Roughly speaking, the sunrise time difference produced by SIN (23°26) is about an hour.

The answer is probably: 23°26 north latitude, 115° east longitude], the time of the summer solstice in the northern hemisphere.

or [23°26 south latitude, 115° east longitude], the time of the winter solstice in the southern hemisphere [calculated in Beijing time].

The following instructions are not of interest and you can ignore them.

1. For people on land: the dawn time is 6° below the horizon, and the sunrise time is 50 below the horizon

2. For the sea: the dawn time is 12° below the horizon of the sun, and the sunrise time is 50 below the horizon of the sun

From the above, you can know where the landlord's problem is "in advance", and similarly, sunset and dark will also have this phenomenon, but it is "delayed".

Calculate the vb function of sunrise and sunset everywhere.

It is open source**, and you can DIY according to the method.

If you are interested, please check out:

I don't know if this will work. But I guarantee that Fan Xiaoxiang is original. 】

This question is indeed less conditional, and the landlord needs to add it.

Are you testing netizens?

Answer: Yes, any longitude is true!

Little sister, you have poor conditions for this problem.

That day? Equinox? Summer solstice? Autumnal equinox? Winter solstice?