Geography Teacher In!! Simple!!!!

Damming and silting simply means building dams (a bit like ridges in farmland) in soil erosion areas to intercept soil layer by layer, so as to achieve the purpose of preventing soil erosion.

Damming and reservoir construction is to enclose the water by building a dam in the river basin to form a reservoir to achieve the purpose of storing water and regulating the flow.

Damming and building reservoirs is to build dams and reservoirs to store water.

Damming and silting refers to the soil and water conservation engineering measures built in the ditches at all levels in the soil erosion area for the purpose of flood detention and siltation and land reclamation. The specific method is to select narrow parts in each medium-sized small ditch and small river in the Loess Plateau area (the area of the control basin is more than 20 square kilometers), take soil from the mountains on both sides to build a dam with the same height as the mountain, and completely lock the entire ditch. After that, they let the flood water accumulate in the ditch until the whole ditch was silted up into small plains and small basins.

The purpose of damming and damming and damming reservoirs is to prevent soil erosion and protect the ecological environment on the Loess Plateau.

Damming and silting means damming and intercepting the silt of the Yellow River, which can raise the ditch, lower the riverbed, and promote agricultural production.

To build a reservoir is to build a reservoir.

Damming and silting is to find a gully to build a dam in the middle reaches of the Yellow River Basin, intercept the soil that is lost in the river water, and form a silt land that can be cultivated, and at the same time reduce the cement and sand content of the river. Damming is the method, silting is the goal.

Damming and building reservoirs should be damming and building reservoirs.

Also, I'm not a teacher.

The purpose of damming and silting is not to store water.

The purpose of damming and building reservoirs is to store water.

d The North Pole is the northernmost point of the world, and when you reach the North Pole, you can go anywhere to the south, so you should choose D.

b The format for denoting the geographical coordinates is (longitude, latitude), with longitude indicating east and west and latitude indicating north and south. In the direction of due east of a place, so 30°N does not change, in b and c, in west longitude (w), the greater the value, the more west, and the smaller the value, the north. So you should choose B.

The explanation is detailed enough.

To the North Pole, in any direction is to the south).

1d to reach the North Pole.

The North Pole is the northernmost point, and when you reach the North Pole, you are surrounded by the south.

2b.（20°w，30°n）

The point with the lower the west longitude is in the east, and the same latitude means that there is no north-south variation.

1. Dam site selection.

The dam is suitable for construction between the two villages of A and B, pay attention to the contour line on both sides of the river, the ridge converges in the opposite direction somewhere between the two villages, here becomes a canyon, the high gorge out of the flat lake, depending on the topography, the amount of damming here is the smallest, and the investment is the least. And it is located downstream of the confluence of rivers, which can intercept the water of both rivers.

2. Canals are selected for line selection.

It is better to look at the contour line, which is to divert water from a high place to a low place, which can be artesian; It is necessary to use water pumps to divert water from low places to high places, and it costs money to purchase and install water pumps, lay wires, and pay electricity bills, and long-term maintenance and overhaul of equipment also require human and financial investment.

3. Highway route selection.

It is better to look at the contour line, basically follow the contour line, the elevation of the whole line of the highway is basically the same, and the highway is flat; It is necessary to climb to a higher altitude first, and then go downhill, which is fuel-intensive and unsafe, and it is not convenient to build roads.

The above is casually said, I don't know how to say it in geography class, maybe some of my words are unprofessional, you can refer to it.

A reservoir is built at the confluence of the river, with a diversion line of 1 and a highway of 4

That's all right!

1。Yunnan is located on the Yunnan-Guizhou Plateau in the southwest of China, first, from the topography, the surface is rugged and the height difference is huge, and the precipitation on the surface has a short retention time; Second, the rock strata in this area are mainly limestone, with karst landforms, many underground karst caves and dark rivers, and the storage conditions of surface water are not good.

2。Privately, I think that Nepal in your topic should be deleted. In the coastal plains of India and Bangladesh, seawalls can be built.

3。The floodplain of the Yellow River (northern China) has less precipitation in spring, more winds and faster temperatures, drought is conducive to locust spawning, and rainy summer is conducive to locust larvae growth.

4。Strengthen monitoring to timely grasp and reflect the occurrence and control of locusts; changing the living environment of locust spawning grounds; Strengthen research on locust control technology (spraying wine and agricultural flowers, aircraft locust extermination, biological locust extermination, etc.).

1. Yunnan is a typical Kashgart landform, and the surface water and soil are easy to infiltrate, resulting in a serious lack of surface water and soil 2. Measures to build river embankments and reservoirs.

3. The history of agricultural development has a long history, and there is a wide range of food**.

Winter and spring are dry, which is conducive to the hatching of locust eggs.

The abnormal weather in winter led to last year's locusts surviving the winter.

The natural enemies of locusts are seriously insufficient, and human activities affect the integrity and health of the ecological food chain4, protect the ecological environment, and establish animal and plant protection areas.

Pay attention to the scientific fertilization and insect control of crops.

Do a good job of drought prevention and insect prevention in spring and winter.

Rational and scientific introduction of locust world.

1. Karst landform... Resulting in serious surface water infiltration. Caused drought 2、I forgot this...

We have been plagued by insects. You'd better wait for the master!!

I'll be the first!

1) Western Europe refers to the western half of Europe, most of which is located in the North Temperate Zone of the Earth's Five Belts, bordering the Great Ocean to the west

2) According to the level of economic development, the countries of the world can usually be divided into developed and developing countries, and most of the western Europe belongs to the developed countries

3) Xiao Ming plans to travel to western Europe during the summer vacation, and if he takes a boat trip to the steep and deep fjords, he should choose to go.

Norway ("Norway" or "France" is optional).

4) In order to achieve broader economic and political integration and integration, the regional international organizations established in Western Europe are (c).

a Organization of the Petroleum Exporting Countries (OPEC) b Asia-Pacific Economic Cooperation (APEC).

c European Clearing Union (EU) d Organization of African Unity (OAU).

5) The ground sign (h) in material two is (d).

a Boundary markers in the northern and southern hemispheres b Boundary markers in the eastern and western hemispheres.

c Boundary markers of the tropics and north temperate zones d Boundary markers of east-west longitude.

6) When the 30th Summer Olympics in London opens, Beijing time should be (d) at this moment

a 3.12 a.m. on 27 July b 3.12 a.m. on 28 July.

c 13.12 on 27 July d 4.12 on 28 July

As can be seen from the figure, the area of the day and night is equal to the northern and southern hemispheres, and the area of the day is equal to the northern and southern hemispheres, so the day is the spring or autumn equinox, that is, March 21 or September 23, and the sun shines directly on the equator.

The leftmost part of the diagram is the 0 degree meridian, the far right is the 180 degree meridian, the middle is 90 degrees east longitude, and the black and white dividing line is 30 degrees east longitude.

The morning and dusk lines are opposite, so the dusk line is 150 degrees west longitude, and the noon line is 60 degrees west longitude. The coordinates of the direct point are (0,60w).

On that day, the world sunrises at 6 o'clock and sets at 18 o'clock, from the east longitude of 30 degrees, that is, the east second district is 6 o'clock, and Shanghai is in the east eighth district, and the district time is added 6, that is, 14 o'clock.

If it is the vernal equinox, the days are getting longer and the nights are getting shorter, and the autumn equinox is the opposite.

It is not difficult to learn geography, as long as you master the tools and methods of learning geography, you can learn solidly and flexibly.

1. Learn to use geography textbooks. Geography textbooks are the main basis for us to learn geography well. When studying, the texts, maps, charts, schematic diagrams, landscape diagrams and various thinking exercises in the geography textbook should be carefully read and thought about under the guidance of the teacher, so as to understand and master certain geographical knowledge and skills.

First, read the content and notes of the textbook, and classify and summarize the scope of a region, such as: location and scope, topography, climate, economic activities, urban characteristics, etc.

2. Geography is no longer a rote course, a lot of knowledge is to be understood, and when you understand the reasons for the formation of knowledge itself, the knowledge gained will be permanent. (e.g., why are the roof structures different in the north and south?) ）

3. The concept of spatial location should be clear, and it must be seen with the map. (Usually develop the habit of reading, reading, and analyzing charts, and cultivate the ability to read, read, and analyze charts).

4. Concentrate on the questions, classify the topics, collect the wrong questions, and ask the teacher or classmates if you don't know it.

5. Enrich your life experience. Read more newspapers, books, and integrate what you have learned with your life, so that you will find it interesting to study geography. Pay attention to on-the-ground observations.

In the study of geography, attention should be paid to the field observation of natural phenomena and human activities in the geographical environment. Field observations can start with the vernacular environment. The environment of my hometown is the most cordial, and it is the real geographical things and geographical phenomena that can be seen directly, and it is the earliest big classroom for learning geographical knowledge.

It can also increase interest in learning.

6. Learn to use maps. Learning geography is inseparable from maps, which are not only a tool for learning geography, but also an important part of acquiring geographical knowledge and basic skills. Therefore, we should learn to read and use maps, develop the habit of reading and using maps, and make "good friends" with maps.

7. Personal efforts are also the main thing, and we must be good at using our brains and hands. The geographical environment is very broad, the characteristics, formation and development of the geographical environment are diverse and complex, and various geographical things are interrelated, mutually influencing and restricting each other. Learning geography is not only learned from textbooks, but also from field observations.

In the process of learning, we should think more about the "development" and "connection" of things, such as a certain geographical phenomenon, and ask a few more whys: Where does it happen? What is the pattern?

What is the reason? What is the solution? Wait.

8. Pay attention to summarizing and summarizing your own learning methods. Such as the method of memorization, the method of problem solving, the method of reading, etc.

If the class is not interested in this, ......I usually find some geographical maps to show my classmates, and everyone likes good things. Explain some general knowledge to the study of textbooks, etc.

Telling funny jokes about geography in geography class will interest the students... Please give me points!!

Are you sure you're interested in geography?

1. Usually the water volume of the reservoir is certain, if the flood arrives, the water of the reservoir will be discharged, and then the sluice gate will be closed to stop the water and adjust the flood peak.

2. Small 3. Through ladder development, the multiple utilization of hydraulic resources has been improved. For example, the terrain difference between upstream A and downstream B of the same river is 1,000 meters, and it is suggested that three water conservancy projects can be built every 300 meters, and they are used three times; If you only see one, use it only once. Ladder development is more conducive to increasing the circulation of water, so ladder development can improve water quality.

1. The reservoir is in the pocket-shaped area.

2. Before the big renovation after the small.

3. Hydropower, irrigation, shelter forests.