It s a geographical problem, it s so difficult, it s a geographical problem.

The shortest shadow indicates that the height of the sun is the largest, that is, it is 12:00 noon (local time) at this time, and when Beijing time is 12:20 degrees east longitude, it means that the difference between the two places is 5 degrees longitude, and the school is located at 120 degrees east longitude, that is, 115 degrees east longitude.

The worst lighting conditions in the city occur mainly on the winter solstice, as the sun height is lowest at noon on this day. At this time, the height of the sun at noon is 30 degrees (90 36°34 23°26), and the distance between buildings is the height of the buildings multiplied by CTG30°

The difference between four minutes is one degree, and the difference between 12 o'clock in the local area and 12 o'clock in Beijing is 20 minutes, which is five degrees, and Beijing time is early, so in the west, it is reduced by five degrees.

On the winter solstice, it also depends on the height of the building.

The shadow of the sun pole is the shortest, and the place is 12:00 noon (local time) at this time, while Beijing time is 12:20, which is later than Beijing time, indicating that the west of Beijing, that is, the school is located in the west of 120 degrees east longitude, four minutes difference of one degree, and the difference between the two places is 5 degrees longitude, that is, 115 degrees east longitude.

North of the Tropic of Cancer (23°26 N), the worst daylighting conditions occur mainly on the winter solstice, when the sun height at noon is minimal. At this time, the height of the sun at noon is 30 degrees (90 36°34 23°26), and the distance between buildings is the height of the buildings multiplied by CTG30°

There is a difference of 4 minutes in local time and 1 degree in longitude. When Beijing time is 120 degrees east longitude, it should be 115 degrees east longitude.

On the bottom floor of the winter solstice, the spacing between the floors should be the height of the building multiplied by CTG 30 degrees.

Hello lz.

This is a typical warm and cold front system in the figure, the right half of the figure is the warm front, and the left half is the cold front.

Behind the cold front, in front of the warm front is a colder air mass; On the contrary, it is a warm air mass. Obviously, the "upper part" in the diagram is cold in the north and warm in the lower south, so this is the northern hemisphere.

The figure shows a cyclonic low pressure system, and the center of the cold and warm fronts in the center is the center of low pressure, with the left cold front from top to bottom and the right warm front from bottom to top, which is obviously rotating counterclockwise. Cyclones have the law of "north and south", and it can be judged that the figure is the northern hemisphere.

The high pressure will not produce the front system in the diagram (the airflow of the high-pressure system is scattered, and there will be no concentration of air masses).

The cold front is on the left, the warm front is on the right side for the Northern Hemisphere, and vice versa for the Southern Hemisphere. The high pressure in the diagram shows that the central pressure is high and the surrounding is low, and the low pressure is reversed.

This question mainly tests the knowledge of cold fronts and warm fronts. The cold front is the forward movement of the cold air, and the cold air goes at the bottom, so the back of the cold peak is the rain area, the warm front is the forward movement of the warm air, the heating is rising, and it is higher than the ground movement, the education area of the warm air is in front of the warm air, and the ground in front of the warm air is the heating, and the ground is the cold air. Therefore there was rain in places b and d.

Air conditioning is a high air pressure. Heating is low air pressure. The airflow is blowing from the cold air to the heat.

The geostrophic deflection force is to the right, forming a counterclockwise cyclone. If it is in the Southern Hemisphere, the geostrophic deflection force is to the left, forming a clockwise cyclone.

As a rule of thumb, the questions you see and what you will see in the future about frontal cyclones are basically in the Northern Hemisphere.

The fifth question is already a frontal cyclone, that is, a cyclone, that is, low pressure, and cyclone is another name for the center of low pressure.

Question 5, Ground B is located before the warm front and in the rainy area, so there will be rainy weather.

I'm a geography major. I feel that the difficulty of high school geography is no longer the second and third years of high school but the first year of high school, mainly focusing on physical geography, human geography in high school mainly to learn to have the ability of comprehensive analysis, in fact, physical geography is the same, which is also the embodiment of the characteristics of geographical science. If you want to improve your geography, you can buy some reference books on your daily basis.

The focus is on nature, to memorize on the basis of understanding.

It's not difficult, read more books and outlines, understand the internal relationship between geographical location, climate and environment, ecological environment, and topography, and you can remember it.

No, I'm just a liberal arts student. As long as you look at the map and the outline, there is no problem in learning well.

What grade? If you go to high school, it's very good, and if you finish college, it's easy to find a job, so it doesn't matter if it's difficult or not.

As long as you lay the foundation, everything will be solved head-on.

No. Because the altitude angle of the sun at noon in winter is 90-(23'26"+29) is approximately equal to 37°

Therefore, the question is equivalent to how long the shadow of a six-story building is.

18/3*4=24m

It can be calculated that its shadow is 24 m < 40 m long, so the sunlight is not blocked.

What time of day, there is no light at night. It doesn't say how high one floor is.

When the Sun is directly shining on the Tropic of Capricorn, the lowest solar altitude angle here is 37°34

If the upward view of the eleventh floor from the fifth floor is greater than the minimum solar height here, there is sunlight, and vice versa.

2. The altitude of the sun is north all year round, which means that this place is the southern hemisphere, and because the height of the sun reaches 90 degrees, it is judged that this place is within the Tropic of Capricorn.

The area in Figure 2 should be on the Tropic of Capricorn.