Hurry! Geography knowledge in the first year of high school! Geography topics for high school studen

In the case of a cyclone, the center is a depression, that is, the horizontal pressure gradient force turns counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.

The center of the anticyclone is high pressure, and the horizontal pressure gradient force is around the middle line, turning clockwise in the northern hemisphere and counterclockwise in the southern hemisphere.

On the diagram, you can look at the isobar diagram, which side is the low pressure center and which side is the high pressure center.

Judge the warm and cold fronts.

1.Depending on the direction of movement of the front, cold air moving in the direction of warm air is cold air, and vice versa.

2.It can also be seen whether the local rainfall is before or after the front, with the precipitation preceded by the cold front and followed by the warm wind.

3.It can also be seen from the diagram that the sign front of the cold front is a triangle, and the warm wind is a semicircle.

But in any case, the cold air must be below the warm air, because the cold air is heavier. ）

Only cyclones (low pressure) produce fronts, and anticyclones (high pressure) do not.

In general, on the global pressure chart, there is a cold front on the left, a warm front on the right, and it's hard to say locally, so you can judge for yourself.

The cyclone rotates counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

The passage of the cold front is accompanied by heavy rain The passage of the warm front is a continuous drizzle.

After the passage of the cold front, the air temperature decreases and the air pressure increases, while the warm front is reversed.

ps.I'm also a freshman in high school, so give it to me.

First, the high and low pressure is determined, and the arrow is drawn vertically along the horizontal pressure gradient from the high pressure to the low pressure. At this time, if the direction of the arrow is from the north to the south, it is pointing to the south (China), the high latitude is the cold front, the low latitude is the warm front, and the east-west direction is judged by the topography of the sea and land mountains. It is not exactly east-west, north-south, and it is also based on many considerations.

Usually, China's summer rainstorm is the cold front weather, and the plum rainy season in the middle and lower reaches of the Yangtze River is the cold and warm front forces are equal, hovering overhead, so it continues to rain. At the same time, there will also be "empty plums". Therefore, you have to consider many aspects, and it is more profound to understand and remember in combination with the climate type of our country.

The key to learning geography is connection.

According to the direction of the movement of the cold and warm air masses, it can be judged that the cold air mass is actively moving, and on the air pressure map, the cold air mass moves in a direction perpendicular to the front, while the warm air mass moves away from the front. The cold air mass generally flows from high latitude to low latitude. Warm fronts are the opposite.

Warm and cold fronts can occur in a cyclone system and are called frontal cyclones. In both the northern and southern hemispheres, in the barometric pressure map, the left side is a cold front and the right side is a warm front.

First of all, according to the isobar, the high pressure points to the low pressure, draw the arrow, the northern hemisphere deviates to the right, and the southern hemisphere deviates to the left, and the wind direction can be drawn.

Then it is judged according to the direction of the wind combined with the hemisphere where it is located (for example, in the northern hemisphere, the wind blowing from the northeast is a cold wind).

Everyone else is gone, what else am I going to do?

In fact, it's very simple, what they say is too complicated, isn't there a picture in the book, one is clockwise and the other is counterclockwise, the northern hemisphere turns counterclockwise, the southern hemisphere is clockwise, just one sentence, combined with the picture of the dead north, don't understand if you don't like it.

There is a cold wind blowing from high latitude to low latitude, and warm wind blowing from low latitude to high latitude.

The following figure is a diurnal graph of the solar height of the whole day on the summer solstice in a place. The geographical coordinates of the place are (, 120°E).

120°e120°e

116°e120°e

On the summer solstice, the sun shines directly at 23°26 N;

In the figure, the height of the sun is the highest at 12 o'clock Beijing time, that is, 120 ° E is 12 o'clock, so the sun shines directly at 120 ° E, that is, the place is 120 ° E; At 0 or 24 o'clock, the minimum height of the sun is 11°43, and the latitude of the place can be calculated by the formula of the solar altitude angle at 0

11°43 latitude +23°26 90° latitude 78°17 na.

Choose c The highest solar altitude of the day is 12 o'clock local time, and the highest solar altitude of the day is 12 o'clock Beijing time (120 ° E local time), so we know that the longitude of the place is 120 °E, and the solar altitude of the place is greater than 0 ° all day on the summer solstice, that is, the polar day occurs, and only the polar day occurs in the Arctic Circle on this day.

(1) It is distributed in the northwest, northeast, north China and around large cities. Feed and markets.

2) Natural conditions: Western Europe has a wide distribution of temperate oceanic climate, and the climate is mild and humid, which is conducive to the growth of succulent pastures; And the terrain is mainly plain, which is suitable for the large-scale development of dairy industry. Socio-economic conditions:

High level of urbanization in Western Europe; And dairy products occupy an important position in the dietary structure, so that the market for dairy products is broad.

3) increase investment in science and technology to breed improved breed dairy cows; strengthen market supervision to ensure product quality; Increase the level of modernization.

1.The northwest and northeast regions are mainly affected by grassland, climate, and temperature!

2.Natural conditions: temperate oceanic climate, year-round temperature, favorable for the growth of succulent pastures socio-economic: high level of urbanization, high consumption capacity.

3.Give full play to natural factors and socio-economic factors, and adapt measures to local conditions!

Northern, Northwest and Northeast regions, vast and sparsely populated, grassland oasis, far away from urban areas, temperature and other suitable for the survival of dairy animals, Western Europe refers to the Alps, look at the development of dairy livestock in Western European countries to drive the local economy.

def。Because b is the same distance from the center of the circle as def. v = angular velocity * radius. The angular velocity is equal everywhere except for the poles.

b. Pay attention to the cold weather and warm river water in the answer. In severe cold weather, when the river water is warm, the surface river water is easy to escape and condense on the surface of the plants to form rime, so the key to this question is to focus on where the warm river water comes from in the severe cold weather. Therefore, it is not difficult to choose the correct answer B

It should be A

The purpose of burning straw is to increase the inverse radiation of the atmosphere and to keep the river water warm.

b Discharge of water from hydropower stations in the upstream direction.

The temperature is different, and the water changes in three states.

b Discharge water is warm river water, which is easy to evaporate into water vapor (the higher the temperature of the water, the easier it is to evaporate), and the cold weather will make the water vapor condense into rime!! So the main reason is b

Burning smoke, because smoke plays a role in heat preservation, can increase atmospheric inverse radiation at night, and night smoke will transfer heat to the river.

d The height of the troposphere varies from latitude to latitude, ranging from about 17 to 18 km at low latitudes, 10 to 12 km at mid-latitudes and 8 to 9 km at high latitudes.

Answer: d From the stratosphere into the troposphere.

The Antarctic region is only 8 to 9 km, while the equator can reach 17 to 18 km.

First of all, determine the type of diagram: the front is a part of the top view, and the latter is a part of the side view deformation.

Then the direction of rotation is judged according to the law of longitude change: east longitude increases to east (i.e., direction of rotation); West longitude increases westward and decreases eastward (i.e., in the direction of rotation). Therefore, the previous figure is clockwise according to the 180° and 90°W rotation directions, and the figure is a bird's-eye view of the southern hemisphere; The right direction of rotation in the back figure is the direction of rotation (to east), so the east longitude in the figure is in the figure; Needless to say, latitude, right?

In the first question, try to draw two points of AB into the same diagram, and judge the direction according to the latitude and longitude. If your logical thinking is okay, you don't need to draw pictures. For example, according to the map just read, it can be seen that A is in the southern hemisphere and B is in the northern hemisphere, then B must be in the south of A, and the two options will be ruled out immediately.

The ABCD option of the second question should first determine the approximate geographical location of the two places according to the latitude and longitude (not looking at the map), and then combine the knowledge of ocean currents, climate, rotation and revolution. It's not a matter of saying it in one or two sentences, depending on how well you base your knowledge. If you don't have a clue, ask your geography teacher.

Question 1 C Question 2 B

First of all, we have to make sure that the previous picture is a top view from the sky over the South Pole, and the person who went upstairs said it as if they didn't say it, and note that it is over the South Pole, so you can make sure that point A is (180, 60s) and point B is easy to identify, because like a normal map, you have already marked point B correctly (70e, 0), so after you have determined it, if you are familiar with the map, it is best if you are not familiar with it, refer to the reference map, and you will know the location of the two points as soon as you look for it, and the problem becomes very simple.