Senior 3 Geography Geography Please answer in detail, thank you 8 15 1 58

The reason for the formation of acid rain is that the sulfur dioxide, nitrogen oxides and other gases emitted by humans or natural emissions in the atmosphere are combined with oxygen to form more acidic sulfur trioxide and nitrogen oxides under the catalytic action of suspended particulate matter in the atmosphere, and these substances are dissolved in water to form sulfuric acid droplets and nitric acid droplets, because they are more acidic than carbon dioxide dissolved in the water to form carbonate acidity, so the pH of precipitation is less than that of acid rain.

There are sulfuric acid types (developing countries) and nitric acid types (developed countries).

The cause is the excessive amount of sulfur and nitrogen oxides that people emit into the atmosphere.

It generally occurs in places with a lot of precipitation.

The combustion of fossil fuels such as coal and oil is a major contributor to acid rain.

Excessive emissions of sulfur oxides and nitrogen oxides.

The simplest answer: the presence of SO2 and NO compounds, the excessive combustion of fossil fuels.

Acids and alkalis in the air with acid rain.

Modern industry, agriculture and transportation emit more pollutants (including acids and alkalis) and rise to the ground with dust, disperse, migrate, transform and then settle to the ground by gravity, or are washed by rain and snow to reach the ground. Acids can destroy vegetation, acidify soils, acidify waters, cause aquatic and terrestrial ecological imbalances, accelerate rock weathering and metal corrosion.

Acid rain is formed by the emission of certain substances into the atmosphere by natural and human activities; Some of the substances are neutral, such as sea salt, NaCl, KCL, etc., which are blown into the air by the wind and waves; Some substances are acidic, such as SOX and NOx, acidic dust (volcanic ash), etc.; Some are alkaline, such as NH3 and particles raised by windswept deserts and alkaline soils; Some are not acid-alkaline, but can play a catalytic role in the migration and transformation of acid-base substances, such as CO and ozone; The pH of precipitation is the result of their interaction and neutralization with each other during the rain washout process. The pattern of emissions from natural and human activities is completely different: over a longer period of time, such as a century or even centuries, the former's emissions remain roughly unchanged; The latter, on the other hand, has increased significantly within decades or even decades in some areas where the economy is taking off.

Acid rain formation conditions:1There are nitrogen oxides or sulfur oxides. 2.There must be precipitation. Acid rain can only be formed if both conditions are present.

The specific reasons need to be analyzed, such as the climate of the acid rain area, and the industry in the acid rain area (whether it emits nitrogen oxides or sulfur oxides).

Take the summer solstice as an example: the direct point of the sun on the summer solstice is 23°26 n, the latitude of Beijing is 40°, and the latitude of Guangzhou is about 23°.

The noon solar altitude of the two places is: 90°-|40°-23°26′|= 73°26 on the southern slope of the mountain with a slope of 17 in Beijing, the height of the sun at noon is close to 90°. The noon solar height above the horizontal plane of Guangzhou is 90°-|23°-23°26′|= 89°34, close to 90°.

The height of the sun at noon is close, and the intensity of solar radiation obtained at noon is relatively close.

Beijing: 39 degrees 54 minutes north latitude, 116 degrees 23 minutes east longitude.

Guangzhou: 23 degrees 06 minutes 32 seconds north latitude, 113 degrees 15 minutes 53 seconds east longitude.

Just take a look at it.

At the same time, the noon solar altitude of the southern slope of the mountain is +17° of Beijing, because Beijing is 40° north latitude, so the solar altitude angle of the southern slope is equivalent to 40°-17°=23°, that is, 23° north latitude, which is roughly the Tropic of Cancer, and Guangzhou happens to be in the approximate position.

This question should be understood in this way: first of all, it is seen that its terrain slope is 17, which is relatively low and flat, and the light intensity will be relatively large, and then it is located on the southern slope, so it can be affected by the southeast monsoon, so the answer is Guangzhou.

Beijing is the East Eighth District.

West 5th District, New York City.

The time difference is 8 + 5 = 13 hours.

So the district time of New York is 19-13=6

That is, 6 o'clock in the morning.

The time zone is positive and negative in the west.

Time asked = time given - (time zone given time - time zone sought) Note: If the difference is less than 0, add 24 but the date should be 1 day earlier; If the difference is greater than 24, subtract 24, but add 1 day to the date.

The district time of New York (West 5th District) is: 19-[8-(-5)]=6 i.m. at 6 a.m.

Beijing is the eighth district in the east, 13 time zones different from New York, a time zone is 1 hour, that is, 13 hours, Beijing is east of New York, subtract 13 from 19, which is equal to 6, so New York is 6 o'clock.

Beijing is the East 8th Zone, New York is the West 5th Zone, and the world is divided into 12 time zones in the east and west, each with a difference of 15 degrees of longitude and 1 hour. Go from East 8 to West, to West 5, pass 13 time zones, minus 13 hours, and then, New York is 6 o'clock!

East 8th District, Beijing.

The Earth rotates from west to east, adding one hour to each zone to the east and subtracting one hour to the west.

Calculate the time difference between two places in different zones, and calculate the nearest zone time: the nearest time zone between the East 8 District and the West 5 Zone is 11 time zones.

The cross-border international date line from the East 8th Zone to the east needs to be subtracted by one day (left plus right, Magellan's circumnavigation days in the geography book are examples).

That is, when Beijing time is 19:00, New York (West 5th District) district time is 6:00 on the same day.

Think of it as a calculation on the number line: Beijing is the East 8th District (seen as +8), New York City West 5th District (seen as -5), the time difference is 8+5=13 hours (the distance is 13), and according to the principle of East plus West Subtraction, the District Time of New York is 19-13=6

That is, 6 o'clock in the morning.

Beijing is the eighth district in the east, and the fifth district in the west of New York, with the same subtraction and difference", because they are one east and one west, so plus.

So the time difference is 8+5=13

Because a time zone 15 degrees of longitude, that is, 1 hour.

And then"East plus West minus", New York minus 13 hours west of Beijing, i.e. 19-13=6 results in New York time is 6 a.m.

b Erosion refers to the process by which surface material is separated from the ground under the action of external forces.

AC is easy to explain.

The formation is the result of sedimentation.

Answer (b) Erosion:

Definition 1: Abrasion, erosion and migration of soil or rock from one point to another due to seawater, flowing water, moving ice, precipitation or wind. Unlike weathering, which is distinctly different, weathering does not necessarily involve material migration.

Discipline: Atmospheric Science (first-level discipline) ; Atmospheric Chemistry (Secondary Discipline).

Definition 2: Erosion in a broad sense refers to the action and process of various external forces destroying the surface and setting off the surface material. Erosion in the narrow sense refers only to the destructive effect of flowing water on the surface of the earth. Discipline: Geography (first-level discipline); Geomorphology (secondary discipline).

This can be analyzed from this:

Option A is too one-sided; Option C should be erosion; Option d The formation of the Loess Plateau is the result of wind sedimentation, and the formation of the surface morphology on the plateau is the result of water erosion. Option B is correct.

We know that the northerly wind blowing in Xinjiang is dominated by the northwest wind as the prevailing wind direction. Then because the direction of the ridge extension is perpendicular to the prevailing wind. Yo choose B.

The A you choose is the prevailing wind direction.

Option B Xinjiang is controlled by northeasterly winds from the Asian high for most of the time, and only in summer is controlled by westerly winds for a short time. The direction of the ridge should be consistent with the prevailing wind direction.

Hello, the direction of the groove is consistent with the direction of the wind, and there are many northeast winds.

First of all, this is our country, our country is located in the northern hemisphere, and the autobiographical direction of the earth is north and south in view, which is counterclockwise in the northern hemisphere and clockwise in the southern hemisphere.

The Earth turns from west to east, which is counterclockwise in the Northern Hemisphere.

Because the North Star can be found, it means that the place where the photo was taken is in the Northern Hemisphere, and the Earth is autobiography from west to east, and the camera rotates counterclockwise from the farthest point of the north (the north of the star). In turn, using the camera as a reference, the star rotates clockwise relative to the camera as seen from the farthest point in the north. Then change the angle of view from the far north to the camera, and change the rotation of the star to counterclockwise.

From the information given: 1. The latitude is a parallel line in the northern hemisphere, because only in the northern hemisphere can a parallels pass through the north of the two continents. 2. The center of the latitude line is the North Pole, and its solar altitude angle is 20 degrees, according to the formula of the noon solar altitude angle equal to 90 degrees minus the latitude difference between the local and direct points, it can be known that the sun directly shines at 20 degrees north latitude on that day.

3. The two degrees in the figure are 15 degrees east longitude and 60 degrees east longitude, and the first place is 120 degrees west longitude 9. The day length of the ba place is 14 hours, so the local time of sunrise is 7 hours before 12 noon (half of the length of the day), that is, the sunrise at 5 o'clock; b If the day is 14 hours and 51 minutes, then the local time at sunrise is 7 hours, 25 minutes and 30 seconds (half the length of the day) before 12 noon, that is, 4:34:30 minutes and 30 seconds of sunrise. When the sun shines directly on the northern hemisphere, the days become longer the further north you go, so when A is located southerly, and when the sun rises at the same time in both places A, 5 o'clock in place A is on the east side of 4:34:30 minutes and 30 seconds in place B (east plus west minus), so position A is easterly. So a is southeast of b 10, ca, should be the northern hemisphere, b, should be the day when the sun shines directly on a place in the northern hemisphere, d, should be the extinction boundary (near the west coast of North America) 11, c (the reason why C is chosen is because the other three are wrong) a, the latitude of A must be relatively high, north of the Tropic of Cancer, its noon solar altitude angle maximum should appear on the summer solstice, that is, the day when it directly hits the Tropic of Capricorn; b. If 15 degrees east longitude is 21 o'clock, then the 0 point meridian is 60 degrees east longitude, that is, 60 degrees east longitude to 180 degrees east is a new day, spanning 120 degrees of longitude, accounting for one-third of the world.

c. Unable to judge. d. Only the noon solar altitude angle of the latitude where the direct sun is located can be 90 degrees, and the direct sun point on this day is at 20 degrees north latitude, which cannot be in the high latitude area.