Geography questions in the second year of high school, please enter!! High School Geography Question

As can be seen in the figure, when the sunlight enters the window, the solar altitude angle is the smallest, so the sun stone shines directly on the Tropic of Capricorn on this day, that is, the winter solstice, and the northern hemisphere is winter at this time, so a b c is wrong, and the first question is d.

In the second question, if the sunlight shines into the window, it can be seen that this day is the spring and autumn equinox, the sun shines directly on the equator, and this time is the local noon, so it is 12 o'clock local time, and Beijing time is 10 o'clock, so it is obvious that the place is in two time zones east of the East Eighth District, that is, the East Ten District, so the local longitude should be between the ranges, so this question chooses C.

Hope it can help you.

67 According to the angle between the sun's rays and the ground, the summer solstice is the largest, which is ray 1, and the winter solstice is the smallest ray, which is ray 3So when the sunlight hits the window as shown, there is a polar night in the North Pole, that is, the further north the Northern Hemisphere, the longer the nights and the shorter the days. Pick D

Question 68 When the sunlight hits the window as shown, the local time is 12 o'clock, which is equivalent to 10 o'clock Beijing time, which is early, so the desired place is in the east, longitude = 120 degrees + 2 hours * 15 degrees hours = 150 degrees Choose C

c. Convert the original map to a top-down view over the North Pole, and the conclusion can be clearly seen.

Connecting the North Pole with C at the equator at A, it is obvious that the longitude difference between AB is less than 45 degrees, so the difference between A and B is less than 3 hours.

Because the time difference is related to longitude, let's look at the problem in terms of longitude.

The longitude spanned by the morning line is 180 degrees.

If we take into account the most extreme case, it is also an impossible case: when the morning line coincides with the equator, the difference in longitude between ab is three hours, which is the maximum.

So all the rest of the time it's less than 3 hours.

So choose item C.

Select C. The next post looks at 13 and 16 floors on it. Hope you understand.

What Ioria replied that you can't understand can be understood in this way. When point C is approaching the North Pole (that is, the equinox), AB will gradually approach, so that the time difference in AB will be close to 0 hours. Got it?

1. B The first question, 1110 km hour is 10 degrees of latitude per hour, flying 90 degrees, that is, from 40°N to the North Pole 90°N 50 degrees, from the North Pole 90°N to 50°N 40 degrees.

The warp coil flies to the other side of the earth, i.e. 64°W.

2. Beijing time (120°E local time) is 20:00 on July 1. The time of the warp line in the figure is (drawn on the figure by yourself).

180°--150°w--120°w-90°w---60°w---30°w---0°

0:00--2:00--- 4:00--- 6:00--- 8:00--- 10:00--- 12:00

The point where the middle meridian intersects the equator at 6 is 90°W, and the rightmost meridian is 12:00 (0°), so point A is at the equator (equal length of day and night).

The Eastern Hemisphere is 20°W to 160°E eastward, and what is visible on the graph is a small segment of the 20°W to 0° meridian (Eastern Hemisphere) in the rightmost lobe of 30°W---0° slides upwards.

The dates in the chart are all July 1, based on 20 o'clock Beijing time (120°E local time), calculated by adding east and subtracting westward, without crossing the date line and exceeding 24 o'clock. The date does not change.

Question 1 is A

Question 2 Beijing time is 20 o'clock, that is, Tokyo 120 local time is 20 o'clock, the point where the meridian in the middle of the map intersects with the equator is 6 o'clock, so it is 90 degrees west longitude, so after calculation, the rightmost meridian is 0 degrees, so point A can slide on a small section of the equator at 20 to 0 degrees of longitude, you can mark a little bit at will.

Point A is July 1 and local time is between 10:40 and 12:00 local time.

The first question you draw a picture to know, 1110 kilometers per hour is 10 degrees per hour, flew 90 degrees to the other side of the earth, not difficult, I QQ number is 569846810, there is a question to ask me, in the know to ask me for help, the second question is a little difficult, according to my experience, the college entrance examination will not be so difficult, although we usually practice is difficult, but it is useless.

1. B2 and a are on the equator, as long as they are 20° to 160° west longitude and east longitude can be seen on the map;

1) the southern coastal region has a warm climate compared to the rest of Alaska, mainly due to the lower latitudes; (There is a North Pacific Warm Current passing by).

2) Compared with the continental United States, Alaska's environmental carrying capacity is relatively small, mainly due to its high latitude and cold climate; Historically, the main ways Alaska's population has grown have been (migration or mechanical growth).

1.The latitude is lower, and warm currents flow through.

2.Smaller, poor climatic resources, migration.

I'll give it a try. 1.There is a warm current passing through, increasing temperature and humidity; Affected by the westerly wind, it brings a lot of water vapor.

2.Small, densely populated, traditional.

Eh, it's just a try, and the landlord will handle it himself!!

1) Under the influence of Alaska warm current, it has a warming and humidifying effect; Under the influence of the westerly wind belt, a temperate oceanic climate with warm winters and cool summers is formed.

2) low, the environmental carrying capacity depends on the storage status of a resource in the region, so the reason for this is due to its resource shortage;

Population migration due to colonial expansion.

First of all, Qinghai Lake is an inland lake, which means a saltwater lake, and fresh water is needed to irrigate farmland. If irrigated agriculture is adopted near Qinghai Lake, not only will it not promote the growth of crops, but will cause crops to lose water and wilt, and even cause soil salinization. Therefore, a is excluded

Secondly, as a wetland to protect of course, will play a role in the protection of species, b to Qinghai Lake in different seasons, the scenery is very different, Qinghai Lake Bird Island Qinghai Lake in Haixin Mountain and Bird Island are tourist attractions, the lake freezes in December every year, the ice period is 6 months, the ice thickness is more than half a meter. There are 5 small islands in the lake, the largest of which is Haixin Mountain. So C is right.

As for option d, both lakes and reservoirs can play a role in regulating the regional climate, etc., d right.

Qinghai Lake is a saltwater lake and is not suitable for irrigating farmland.

Qinghai Lake is the largest saltwater lake in China.

Because the salt content of the lake water is too high, it is not suitable for irrigating farmland.

Adopt me!

Qinghai Lake is the largest inland lake in China and the largest saltwater lake in China.

Using it to irrigate farmland causes salinization of the land.

In addition, in different seasons of Qinghai Lake, the scenery is very different, Qinghai Lake Bird Island Haixin Mountain and Bird Island in Qinghai Lake are all tourist attractions, the lake freezes in December every year, the ice period is 6 months, and the ice thickness is more than half a meter. There are 5 small islands in the lake, the largest of which is Haixin Mountain. Located in the western part of the lake, Bird Island covers an area of square kilometers and is home to more than 10 species of migratory birds, including bar-headed geese, fish gulls and cormorants, with more than 100,000 birds.

The Bird Island Nature Reserve has been established. The lake is rich in Qinghai Lake naked carp and rayfish. The lakeside grassland is a good natural pasture. Attach.

Obviously, according to the geomorphological characteristics, it can be easily judged that C is the Loess Plateau in the middle and lower reaches of the Yellow River. Knowing that C is the Loess Plateau, it is easy to choose the item of soil erosion. In addition, B is the Inner Mongolia Plateau, the problem is land desertification, A is the middle and upper reaches of the Yellow River, the ecosystem is fragile, coupled with the greenhouse effect, unreasonable human activities, exacerbated the ecological damage in this area.

When answering the questions, pay attention to the application questions, and look for the answers in the options in the order of A, B, and C.

Well, according to the image you can see, this area is the Yellow River zigzag place, the middle and lower basins of the Yellow River are the most important is desertification, soil erosion, uh... This map is based on your memory of some special areas in China, the Yellow River is a zigzag, the Yangtze River basin, the upper reaches of many tributaries, three rivers flowing in parallel, the middle and lower reaches of the relative concentration point, and often rely on the Tarim Basin attached mountains, the height of the north and south mountain snow line.

And you can look at the precipitation line, it's only 200mm, and you can basically rule out some answers.

The key to this question is whether or not to analyze the place of the diagram. According to the direction and shape of the river, it is not difficult to see that it is the Yellow River.

Now to analyze the answer.

Option A's flood disaster is an obvious mistake, and it is a miracle that there can be a flood with 200mm of precipitation.

Option B: Red tide Red tide is a phenomenon that occurs on the ocean, C is located on the Loess Plateau, so it is wrong, option d If you have taken a serious class, you should know that the section of the Yellow River that is eroded is in the Loess Plateau, and the first place is the source of the Qinghai-Tibet Plateau.

Option C So that's right.

A is the destruction of vegetation in the upper reaches of the river.

B had the least precipitation among the three.

C is located on the Loess Plateau.

A is located in the upper reaches of the Yellow River, the problem is that the ecological damage is more serious, the middle reaches of B, 200 isoprecipitation line, the amount of water is insufficient, and there is no high isoprecipitation line, it is easy to lack water, desertification, this place is the middle reaches of the Yellow River, the problem is the desertification of the grassland. As for the downstream rivers with many branches and river basin boundaries, the most likely problem is soil erosion, which is also in line with the situation of the Yellow River.

Hope it helps, thank you!

Because it takes time for ships to sail in formation, there is no doubt that the days from East Sanya to the Strait of Malacca have become longer.

As for the course after that, the days also become longer because:

First of all, from the perspective of time, shortly after the winter solstice in the Northern Hemisphere, the days in the white hemisphere become longer, and close to perihelion, the speed of the Earth's rotation around the sun is faster, and the speed of the northern hemisphere day becomes longer is also accelerated.

Second, because of the voyage at the lower latitudes of the Indian Ocean, although it is a slight voyage to the higher latitudes, the speed of the axis shortening (a) brought about by the voyage to the high latitudes of the Northern Hemisphere is offset by the speed of the daytime change in the Northern Hemisphere (b) due to the faster rotation of the Earth near perihelion, and the speed a is less than the velocity b.

The above may explain the answer.