Urgent! Ask for help with two analytical questions about physical geography

Physical geography is the study of the regional characteristics, regional differentiation and the occurrence and development process and change law of the natural geographical environment of the earth's surface on which human beings depend.

Research contents: (1) the composition, structure and regional distribution of the natural environment on the surface of the earth on which human beings depend;

2) the causes and changes of the natural environment on the surface of the earth on which human beings depend;

and 3) the mechanism of operation of the earth's surface natural environment system on which human beings depend.

4) the interaction and mutual influence between human beings and the natural environment on the surface of the earth;

5) Assessment, planning, management, optimization and regulation of the natural environment of the earth's surface.

Study the structure and composition of the earth's surface... Mission: Understanding Nature and transforming it for human service.

26 (1) Slightly cooler temperatures in winter and higher temperatures in summer; The annual temperature range is large.

land and sea location; Terrain (valleys).

2) B is larger than A, reason: B has a higher altitude and is prone to topographic rain.

B is larger than C, reason: B is on the windward slope and C is on the leeward slope.

3) The climate of the Great Salt Lake basin is dry and the precipitation is low, the glaciers retreat, and the lake water supply is reduced. Evaporation is vigorous, and the amount of evaporation is greater than the amount of recharge; The Great Salt Lake is an endorheic lake, and salt accumulates with runoff.

26 (1) Slightly cooler temperatures in winter and higher temperatures in summer; The annual temperature range is large.

I'm trying. What is the problem?

This map is located in the western region of China, and is located in the northwest of Yinchuan, which can be judged to be Helan Mountain. Helan Mountain is the dividing line between the monsoon area and the non-monsoon area, and it can be seen that the Q area is located in the non-monsoon area and the P area is located in the monsoon area, so the P area is greatly affected by the summer monsoon and is located on the windward slope of the summer monsoon with more precipitation. Right.

The air is humid, and the east of the P is the Ningxia Plain, which is far away from the sand source, and the Q is located in the desert, and the number of sandstorm days in Q is wrong due to the strong northwest wind.

Q is located on the windward slope of the northwest wind, and P is located on the leeward slope of the northwest wind, so the number of windy days in P is less.

The air in the plutonium is humid and prone to snowfall. Q is located in a desert area, the air is drier, and it is not easy to form snowfall. The humidity of the air is one of the conditions that determines the amount of snowfall. Wrong.

The leeward slope of the AP land has a lot of precipitation per year.

The plutonium is located in a river valley with little windy weather.

Q is located in a desert, the climate is arid and there is little precipitation, and it is located on the path of the winter equinox, with windy weather.

1. The figure of Beijing at noon is getting longer and longer, which means that the direct point of the sun is moving to the south, so choose the answer in c and d (after September 23, the sun begins to shine directly in the southern hemisphere). Mn is the equator, then the principle of going up north and going south, left west and right east, the dividing line between the eastern and western hemispheres is 20°W, 160°E, then, the longitude where m is located is 160°E, and N is 20°W (along the direction of the earth's rotation, from M to N is the Western Hemisphere). The side we see is the night hemisphere, so the middle meridian is at 0 o'clock, 160°E to 20°W eastward, and the middle meridian is 110°W (draw a few vertical lines to indicate the meridians, push them yourself).

So, when 110°W is 0, it will be 15:20 in Beijing. Well, D is right.

2. M and N are two opposite meridians, and the two sides are at different times, so these two lines are two daily lines. So, illustrate, one of them is a 180° meridian and the other is a meridian at 0 in local time, because they are two opposite meridians, then a meridian at 0 in local time is a 0° meridian. Then, the 0° meridian is 0 o'clock, and Beijing is 8 o'clock.

B is right.

Question 1. This question is a two-step process.

Step 1: The figure is a side view of the earth, and MN is the equator, and this side is the night hemisphere, it can be seen that the earth is in the spring and autumn equinoxes at this time, because only on the spring and autumn equinoxes, the upper and lower endpoints of the morning and dusk lines are just at the north and south poles, and the earth is equinox. Let's look at the map again, since it is night in the western hemisphere at this time, Beijing is located in the eastern hemisphere, and it should be daylight, excluding a and c.

Step 2: Since the shadow of the sun is getting longer and longer at noon in Beijing at this time, it can be concluded that the direct sun point is moving southward, and the solar altitude angle is getting smaller and smaller, and the direct sun point will move north after the vernal equinox, and it will move south after the autumn equinox, so it can be concluded that this is the afternoon of the autumn equinox, that is, item d.

Question 2. Because the meridians on both sides of m and n are different dates, it means that the old and new dates account for half, then the 0° meridian is 0 o'clock, the 180° meridian is 12 o'clock, Beijing is located at 120 degrees east longitude, 180-120=60 degrees and then divide 60 degrees by 15 to get a difference of 4 time zones, so it can be deduced that Beijing time is 12-4=8 hours. Option B.

You leave a QQ, I'll tell you in Q, I can't explain it here, the question is not difficult

First of all, it is necessary to understand the causes of mild corrosion and severe erosion; The southern part of Xinjiang is the Tarim Basin, and there is the Taklamakan Desert, which is the largest mobile desert, and the flowing wind and sand erosion is a violent erosion. In the north, the Tianshan Mountains are the Junggar Basin, and the erosion of ice and snow meltwater is relatively severe.

In fact, the tenth question can be considered in this way, light erosion and severe erosion are very serious and cannot occur in the same place at the same time, unless the difference between the regions of this place is huge, and Xinjiang just fits.

,,10d, which is related to the special topography of Xinjiang.

The topographical characteristics of Xinjiang are: mountains and basins are arranged alternately, and the basin is surrounded by high mountains, which is commonly known as "three mountains and two basins". The Altai Mountains in the north, the Kunlun Mountains in the south, and the Tianshan Mountains lie across the middle, dividing Xinjiang into two halves, the Tarim Basin in the south, and the Junggar Basin in the north.

It is customary to call the south of the Tianshan Mountains the southern frontier and the north of the Tianshan Mountains the northern frontier.

Desert erosion, erosion caused by hot summers, long hours of sunshine and cold winters, these are not present in the south.

Xinjiang should be in the north, close to the source of the winter monsoon, and the erosion is strong. The Tarim Basin in the south, surrounded by high mountains, has less wind and less erosion. In addition, the Taklamakan Desert is a wind-powered sedimentary landform, and the main external force is sedimentation.