Geography questions, 11 to 16 questions, geography 10 questions ,,,

Choosing A A is the North Star.

The central axis of the earth is called the axis of the earth, and it is oblique, and the direction of the axis of the earth is always towards the north star, when the earth revolves, the direction of the earth's axis has not changed, and the north pole always points to the position near the north star.

But since its axis of rotation always remains in the same direction, it appears that the North Celestial Pole also remains "in place". The North Star also seems to be in the direction of the North Pole forever. In years, decades, or even centuries, this "standing still" is unlikely to see significant change.

However, after a long time, astronomers found that the direction of the Earth's axis was slowly changing, and the North Celestial Pole was also moving slowly, and the current North Star was not near the North Celestial Pole. Astronomers tell us that after 12,000 years, the North Celestial Pole will move to the vicinity of Vega, which will become the "North Star".

So b is not right, the North Star is over the North Pole.

According to the following question, it should be that star B was photographed at the equator, and the trajectory of star B is caused by the rotation of the earth.

We usually see long-term photography, time-lapse photography, we can see the starry sky trajectory map imaged due to the rotation of the earth.

The interval between the remotion of star B to the position of this observation point is 1 sidereal day 23:56:4.

The time interval between the meridian and the same star (the time interval between a meridian and the geocentric line connecting the same star twice) is called a sidereal day, and the sidereal day is a distant star as a reference system, with a period of 360 degrees of rotation of the earth for 23 hours, 56 minutes and 4 seconds. To put it simply, a sidereal day is the period of the Earth's rotation. Of course, the return year is also the Earth's orbital cycle.

It's just that the time system used is different.

D is not right either. The only star in the solar system is the Sun. You can know according to option A above.

The current North Star is a bright star called Gou Chenyi, which is located at the tip of the tail of the bear in the constellation Ursa Minor.

Ursa Minor is the closest northern constellation to the North Celestial Pole, and includes Ursa Minor in both Ptolemaic and the modern Eighty-Eight Constellations. The constellation Ursa Minor marks the location of the North Celestial Pole, and the brightest star in the constellation, Ursa Minor, is the current North Star.

Polaris is a bright star in the northern part of the sky, very close to the northern celestial pole, almost facing the Earth's axis, and its position is almost unchanged from the northern hemisphere of the Earth.

10、a

The Earth rotates once and the position of Star A has barely changed, indicating that Star A is North Star. During the Earth's revolution, the northern end of the Earth's axis points in the direction of Polaris.

The answer is db

12AA lot is new in the middle, old on both sides, this one is oblique, oblique is suitable for water storage and anticline is oil, so a is wrong.

On the contrary, the middle is old and the two sides are new, this is an anticline, which is a formation suitable for oil storage.

c There is an unidentified contour at the location, and the outer side of the contour is 350 400, so if it is a pit, it is the 350 contour line, and the position is 300 350;If it's a mountain, it's 400 contours, the position is 400 450, and either option, c is wrong.

d To be honest, this river is obviously from north to south, and the west is not very obvious, but there is no way, this question ABC is obviously wrong.

13 Since the b of 12 above is known to be anticline, I think it is natural to check b in this question.

1. Plains: East Asia, South Asia, and Western Europe.

2. North middle and low latitudes.

3. The temperature is suitable and the precipitation is moderate.

4. Heihe-Tengchong.

1, Plain Yangtze River Delta.

2. Northern Hemisphere Medium.

3. Warm and moist.

4. Heihe-Tengchong.

1) Corn. 2) Resource consumption.

3) Eurasia (Asia and Europe).

4) Siberia or coincidence.

1) Germany, England, France, Italy.

Berlin, London, Paris, Rome.

2) Atlantic Ocean, Mediterranean, Baltic Sea, Alps.

3) Temperate oceanic climate Mediterranean climate.

4) Polish Plain (or Central European Plain) Western European Plain, Rhine, Volga, Danube, Caspian Sea.

15 – (1) Brasilia (2) Coffee (3) Amazon River, Tropical Rainforest.

16 – (1) Pacific Ocean, Amazonas, Brasilia.

2) I can't read the whole question stem - tropical rainforest (the type of forest), Amazon tropical rainforest (the name of the forest, if you are satisfied with the answer, please choose).

15. Brasilia Sugar cane (coffee, etc.) Amazon River Tropical rainforest climate.

16. Pacific Ocean, Amazonian River, Brasilia, Tropical Rainforest.

15: Brasilia.

Cocoa, coffee or something...

Amazon River. Tropical monsoon climate.

16: Pacific Ocean.

Amazon Brasilia.

Amazon rainforest.

I'm going to see the atlas...

Brasilia, sugar cane, Amazon, tropical rainforest climate.

Pacific Ocean, Amazon River, Brasilia, Amazon Forest.

10. Select C Northwest.

Duxia Station (76°58 e, 73°51 s), Great Wall Station (163°42 e, 74°55 s) - when both places are east longitude, the greater longitude value is in the east and the smaller is in the west, so Duxia Station (76°58 e) is in the west, and the Great Wall Station (163°42 e) is in the east; When both places are south latitudes, the large latitude value is in the south and the small is in the north, so Duxia Station (73°51 s) is in the north and Changcheng Station (74°55 s) is in the south. Combining the above two points, Duxia Station is roughly located in the northwest direction of the Great Wall Station, and C is selected to be northwest.

11. Select c Global warming.

The main reason for the melting of sea ice and glaciers in the polar regions is global warming. Option c Global warming.

The answer to question 11 is c, global warming is the main culprit of the melting of glaciers at the poles, and question 10 is not clear.

The picture is not very clear, put the roll flat and send it again.

11. C Li is suspected of being high-altitude, with little friction and strong wind.

12. D out of which hand grinding is the downdraft of the subtropical high pressure.

Malay Archipelago Indochina Peninsula.

The coldest moon is greater than 15° The coldest moon is greater than 15°

The annual precipitation is greater than 2000mm, and the annual precipitation is more than 1500mm, which is divided into dry season and rainy season.

High temperature and rainy throughout the year High temperature throughout the year, divided into dry season and rainy season.

Crops can be grown all year round Crops are planted during the rainy season and harvested during the dry season.

Open the geography textbook and look closely, and you will definitely find the answer.