High School Geography, Physical Geography, Why don t you choose D and C in 2 questionsHow to explain

Anticyclone: The pressure is high in the center and low in the surrounding area Northern Hemisphere: Radiates in the clockwise direction of the abrasive, and the central airflow sinks Mostly sunny weather (drought in China).

Front: The junction of two types of gas-sheltered old masses (cold and warm) with different physical properties such as temperature and humidity.

The high-pressure area is mostly dry and cannot form a front.

Only in the low-pressure trough in the low-pressure area can the liquid be formed in the front, forming a rainy area.

<> according to the title, the location of the hot spot is relatively fixed. According to the location of the volcanoes in the map and the sequence of formation, the above diagram can be drawn. It can be inferred that the direction of movement of the American plate is from northeast to southwest.

Reading the previous descriptive text carefully, volcanoes are hot spots that manifest themselves on the surface, connecting volcanic eruption sites between 2 million and 600,000 years, which is equivalent to the surface moving away from the west and south, that is, d

According to the question stem, the conditions for the formation of such cyclones are caused by the sudden and rapid movement of cold air, which causes the warm air that was originally present in the area to rise rapidly. So there isFrontal rainnature.

Therefore, B bluntly states that the topographic conditions are favorable to the movement of cold air is correct, and if C talks about the problem of high and low pressure, it is also correct to point out that the pressure distribution is conducive to promoting the movement of cold air and forming a front!

a refers to convective rain formed by the rise of a single warm air mass. d refers to the terrain rain that is obtained by the warm air as the terrain climbs. None of them were the main cause of the cyclone.

It's not a rigorous question, but it can still be done.

First of all, the vegetation is deciduous broad-leaved forest, and deciduous broad-leaved forest is only distributed in areas with obvious marine climate in the mid-latitudes, so a is excluded, and secondly, there are no climatic conditions for the formation of deciduous broad-leaved forest on the west coast of Africa, so b is excluded, and then because f1 and f2 are equal in length, so f2 is sunset, so the sunrise is 7 o'clock, and the day is 10 hours long, so the sunshadow part in the diagram must be the inferior arc of f1 n f2, and the shadow of the tree faces north at noon, so the sun is in the south, so this place is in the middle latitudes of the northern hemisphere, so c is excluded, so d is selected In the concept, deciduous broad-leaved forests are mainly distributed in Eurasia, and Eurasia is in the eastern hemisphere, so it can be explained, because the middle school only needs to know that deciduous broad-leaved forests are in Eurasia, so if you know this concept, you can directly choose d, but deciduous broad-leaved forests are also distributed in the mid-latitudes of North America, that is, the United States and Canada, so the answer to this question d does not necessarily mean that it must be in the Eastern Hemisphere, but it can only be in the Eastern Hemisphere, because this question does not tell whether it is in the Eastern Hemisphere or the Western Hemisphere.

The answer should be C

The main method is the elimination method, which excludes AB first, where there are no deciduous broad-leaved forests. d In the Western Hemisphere, both North and South America have deciduous broad-leaved forests, in fact, this d can also be ruled out.

f1 represents the shadow of the tree at sunrise in the local area, f2 represents the shadow of the tree at 17 o'clock local time, and f2 is the same length as f1.

Therefore, the time represented by f1 is 7:00, when the days are short and the nights are long.

Suppose the place is located in the Northern Hemisphere and the days are short and the nights are long. It should be the winter half of the northern hemisphere, that is, the second. During this period, the northern hemisphere should be sunrise southeast and sunset southwest. Therefore, the hypothesis is not valid, and the conclusion can only be that of the southern hemisphere. Therefore c is correct.

I think so, think again. Nice question, quite novel, I like it.

Mainly by elimination, firstly deciduous broad-leaved forests are the most dominant forest type in temperate zones, (latitudes are mid-latitudes) so it cannot be a b

Second, f1 represents the shadow of the tree at 6 o'clock at sunrise in the local area, and f2 represents the shadow of the tree at 17 o'clock local local time, and the day length can be seen at 11 o'clock. The description is that the days are short and the nights are long. In the northern hemisphere, the spring and autumn seasons are equinoxelated, and the summer days are longer and the nights are shorter, so it may be winter.

Then the southern hemisphere can only be summer. And the question c must be located in the southern hemisphere, which is too absolute.

So choose D after the exclusionDeciduous broad-leaved forests in the mid-latitudes of the Eastern Hemisphere are found in China. So it's in line with the topic.

First of all, the shadow of the tree is north, the sun must be on the south side of the tree, and this tree is determined to be in the northern hemisphere, and then the vegetation is deciduous broad-leaved forest, which is determined to be located in the middle and high latitudes, and finally, there are no deciduous broad-leaved forests in the vegetation distribution on the west coast of Africa, so the answer is finally locked as d

Deciduous broad-leaved forests are predominantly temperate vegetation, so it can't be a, b

And because the temperate zone of the Southern Hemisphere is predominantly oceanic, and all of them are not the Southern Hemisphere, deciduous broadleaf forests are almost exclusively distributed in the warm regions of the Northern Hemisphere that are influenced by the oceanic climate. The typical deciduous broad-leaved forest is in the northeastern part of the Eurasian continent, that is, in the eastern hemisphere.

There are two sedimentary rocks in the picture, and sedimentary rocks, as the name suggests, are rocks that are deposited little by little over time and formed over time, and the lower the rock layer, the longer it takes to form. So sedimentary rock 2 was formed before the formation of sedimentary rock 1, and from the lithofacies of sedimentary rock 2, it was not formed horizontally, the rock layer had folds, and you carefully observed that the upper part of sedimentary rock 2 had traces of erosion, which was uneven, so the first thing that happened was erosion.

Then, on the basis of the eroded sedimentary rock 2, the sedimentary rock 2 continues to accumulate in this rock, and it does not fold or fracture, it is only sedimentary.

Granite is a kind of magmatic rock, magmatic rock erupts from the inside of the earth, and the one that erupts out of the surface is called basalt, and the one that does not erupt out of the surface is called granite.

I hope it can help you, I wish you a happy study, and if you don't understand, you can ask.

First of all, due to the folding, the first area is oblique, and the oblique should have convex upward, but due to erosion, it did not convex upward, just like a mountain without a summit.

Originally, it was easy to form a valley after being eroded obliquely, but only one of the upper convex parts was eroded and then pressed by the sedimentary rock, and the process of sedimentary rock formation was formed by sedimentation.

Granite is a stone formed by volcanic eruptions and the cooling of magma, so it is a magma intrusion (if you don't understand, please ask).

The rocks above the armor were eroded, and then sedimentary rocks were deposited1, and magmatic rocks invaded the armor rocks and sedimentary rocks1, and the magmatic rocks were finally formed.

Because the top fold at the nail is missing, it is the first to be eroded; Sedimentation then occurs, forming sedimentary rocks on top of rocks; Finally, due to magmatic intrusion, the continuity between the fold and the sedimentary rock was disrupted. As can be seen from the figure, sedimentary layer II was eroded after the fold of the first place, part of the rock layer was eroded, and then sedimentary rock layer I appeared, and finally magma intruded into sedimentary layer II and sedimentary layer I.

Jilin Province is not the main reason why it is affected by the summer monsoon, which mainly affects the climate rather than the weather.

The main reason is that the direct sun point moves southward in 89, the temperature drops, and the temperature difference between day and night is large, which is easy to condense into water vapor, that is, fog.

Answer C is incorrect.

In June, the summer monsoon is still in the middle and lower reaches of the Yangtze River, and the plum rain forms in the middle and lower reaches of the Yangtze River, and the summer monsoon can move northward to North and Northeast China after July. There is not as much precipitation in June and July as in Jilin as in August.

First, let's solve the first question, why not choose D. The answer is simple, in fact, the total population of the United States is higher than that of Brazil, and the quality of the labor force in the United States is high, and Brazil's labor advantage in soybeans is not obvious. Secondly, a little knowledge is that the increase in total crop yield is in two aspects, one is the expansion of cultivated land, but the improvement of planting technology.

Brazil is the largest country in South America, the population density is lower than that of the United States, and Brazil's strength is not as good as the United States, the degree of urbanization is not high, so the city occupies a small area, and many places in Brazil are rainforests, so there are many land resources that can be reclaimed, so choose C.

Then there is the second question, you must know that high productivity refers to the number of crops produced per unit area, the most critical influencing factor of agricultural productivity is the investment in agricultural science and technology, the United States is the strongest developed country, Brazil is only a developing country, the United States is stronger in agricultural science and technology, and naturally the agricultural productivity of the United States is higher, and the highest is also high. Brazil's low crop prices are due to the underdevelopment of agricultural technology and the low cost of labor. So choose D.

The topography of Australia is characterized by mountains in the east, plains in the middle, and highlands in the west. Australia straddles two climatic zones, with the northern part being tropical, and due to its proximity to the equator, January-February is the typhoon season. Southern Australia is temperate.

The central and western regions of Australia are uninhabited deserts, with drought and little rainfall, high temperatures and large temperature differences. Circle 4 is located in the coastal zone, close to the westerly wind belt of the southern hemisphere, and has abundant rainfall and humid climate due to the humid climate of the ocean. The westerly wind belt is located between the subtropical high pressure zone and the subpolar low pressure zone, which is the zone where the hot air heated and rising over the equator meets the cold air over the polar region.

So, choosing C is incorrect. b is correct.