Geography topic in the first year of high school I want to elaborate on it I am not very good at geo

Are you asking the sixth question? Select D for six questions

Analysis: The convex isobaric surface at P is high pressure, and the corresponding hillside of the same height is low pressure. During the day, the slope is heated and heats up quickly, the air expands and rises, the high altitude becomes high pressure, and the valley corresponds to the high altitude, the free atmosphere heats up slowly, the air shrinks and sinks, and the near ground is high pressure and the high altitude is low pressure.

The air at the same level flows from high pressure to low pressure, so it is a valley wind during the day.

Note that the high and low pressure can only be compared with the same altitude pressure.

Well, although I haven't touched geography for half a year, as the first man in the party year, I won't forget it so quickly.

First of all, look at ab, these two options basically mean the same thing, this kind of answer has never been chosen, and then it's cd.

Look at d first, I don't know if it will look at the isobar, if you can look at it, you will obviously find that the valley is high pressure, at this time it is a valley wind, it is obvious that d is wrong.

Look back c, this option is actually seen a lot, you will find that you generally choose this, what is the temperature inversion phenomenon yourself, probably the low altitude and low temperature, the consequence is that the smoke is not easy to spread.

That's how I look.

If the isobaric side is convex upward, the air pressure in the ground is high (because it is convex upwards, there may be isobars underneath, and the air pressure decreases with height). During the day, the sun shines on the slopes of the mountains, and when the temperature on the slopes is high, the pressure is low. At night, the slopes cool down quickly and the pressure is high.

The valley is the opposite of the hillside. The wind, on the other hand, is always blowing from high pressure to low pressure. In this case, if the valley is at high pressure, it means that during the day, the wind direction is blowing from the valley to the hillside (valley wind).

During the day, the valley winds elect d

A The stem is confusing, lotus or lotus is a perennial aquatic plant, and the large lotus leaves are closely related to more water;

A salty tide is a phenomenon in which seawater backs up into a river channel, causing the river water and groundwater in the estuary area to become salty.

The main reasons for the salty tide are as follows:

1.The flow of the river is reduced, the river level is lowered, and the seawater backs up.

2.Disorderly sand mining near the estuary has caused the river level to be below sea level.

3.Tidal action.

4.Global warming, rising sea levels. d

1. The main reason for the formation of the East Asian monsoon is caused by the difference in the thermal properties of the sea and land, that is, the physical thermodynamic properties of the ocean and the land are different, that is, the specific heat capacity of the water body is large, the temperature is slow and low in summer, and the temperature is relatively high in winter, while the land heats up quickly in summer and the temperature is relatively low in winter, so the temperature of the ocean is higher than that of the land in winter, so according to the principle of thermal circulation, the land (Eurasian continent) is cold and shrunk by cold air. As a result, the near-surface pressure rises and a high-pressure center (such as the Mongolian high and Siberian high) appears, and the heated air in the ocean (Pacific Ocean) expands and rises, resulting in a low-pressure center (such as the Aleutian low pressure) in the ocean, and the wind (horizontally moving air) always blows from high pressure to low pressure, so in winter, it blows from the land (high pressure) to the ocean (low pressure), and under the action of geostrophic deflection force, it turns into a northwest wind in East Asia. Since the winter monsoon originates in the high latitude land (Siberia) and blows to the ocean, the interior of the land is drier and the higher latitude is colder, so the winter wind is dry and cold. In summer, it's the opposite.

2. The winter monsoon originates in the high-latitude inland, with less water content, low temperature and cold, so the winter precipitation in East Asia is relatively small. In summer, the wind blows from the ocean, bringing warm and humid air currents and a lot of precipitation. This is also characteristic of East Asian monsoon precipitation.

3. As far as evaporation is concerned, theoretically the temperature is high and the evaporation is fast. I don't quite understand what you're talking about. For example, in the same area of the Pacific Ocean, there is generally more sunlight in the summer, warmer temperatures and more evaporation than in the winter, so that the summer monsoon can also bring more moisture.

In winter, the ocean is cooler than in summer, evaporation is not vigorous, and the wind does not blow to land.

Affected by the monsoon, the southeast wind is easy to evaporate in summer, and the climate is humid and rainy. In winter, the northwest wind is deep inland, and the climate is dry and rainless.

1. In winter, the land is controlled by high pressure, and the ocean is controlled by low pressure. And the wind blows from high pressure to low pressure, so the wind blows from the continent to the ocean.

2. The land is relatively dry, so the air will be relatively dry.

3. As for the sunny weather, it is easy to understand, the air is dry, where does the moisture form clouds, and the summer is just the opposite, the wind blows from the ocean to the land.

In winter, the continental temperature is lower than that of the neighboring oceans, and there is a cold high pressure on the continent and a corresponding low pressure on the ocean, and the air flow blows from the continent to the ocean on a large scale, forming the winter monsoon. The winter monsoon prevails in the Northern Hemisphere with northerly or northeasterly winds

It has a temperate maritime climate and is characterized by mild and humid throughout the year

The rise of the snow line will increase the yield of crops in the middle and high latitudes, and the yield of crops in the lower latitudes may be reduced due to the increase in temperatures and pests and diseases).

Winter monsoon, northwesterly winds from the Mongolian-Siberian high).

Hurry up the cold front).

Seriously agree with the answer of the old man on the second floor, how can it be so good, but the rate is 0%?