Senior 1 Geography I hope to tell me how to solve the problem

1) In the summer of the Southern Hemisphere, point C is on the morning line Reason: It can be seen from the figure that there is a polar day phenomenon in the Antarctic Circle, from which it can be judged that the sun is directly hitting the Tropic of Capricorn at this time, so the date should be December 22, which is the summer in the Southern Hemisphere; In the diagram, point c is at the junction of white and black, so we first judge that it is on the morning and dusk line, and secondly, because the day hemisphere is the side facing the sun, so the sun should be in this position in the figure, and according to the rotation of the earth from west to east, we can conclude that the diagonal line where c is located is the side facing the sun, therefore, c is on the morning line.

2) 12 o'clock; 12 hours; 4 hours; 10:00 Reason: Because the sunrise is 6 o'clock and the sunset is 18 o'clock at all times on the debut, we can judge that the time at the focus of the morning line (that is, the oblique line where point C is located) and the equator should be 6 o'clock, and the meridian in the figure divides the earth we see in the figure into 6 parts on average, so we can calculate that the longitude difference between the two adjacent meridians is 30 degrees, which is 2 hours different in time, and the meridian where a is located is 90 degrees different from the focus of the morning line and the equator, that is, the difference in time is 6 hours, according to " East plus West minus" can be calculated at the time of the meridian where A is located at this time, which is 12 o'clock; As mentioned earlier, on the equator, it is sunrise at 6 o'clock and sunset at 6 o'clock, and point D is on the equator, so the day length at point D is 12 hours; Or the algorithm just now, the meridian where point C is located is 60 degrees different from the meridian where the morning line is located and the focus of the equator is located, so the sunrise time at point C should be 10 o'clock, according to the sunrise time = 12 - day length 2 can be calculated, the day length of point C at this time is 4 hours.

3) C reason: Because on the morning and dusk line, the sun stone is on the horizon, and among the three points a, b, and c, only c is on the morning line.

4）adbc；CDAB Reason: Because the sun is directly hitting the Tropic of Capricorn at this time, point A is exactly on the Tropic of Capricorn, so its noon solar altitude angle should be 90 degrees, point B is located on the Antarctic Circle, according to the calculation formula of the solar altitude angle, it can be calculated that its noon solar altitude angle is 46 degrees 52 minutes, and the latitude of point C is lower than the Arctic Circle, so its noon solar altitude angle must be greater than 0 degrees, and point D is on the equator, so it can be calculated that its noon solar altitude angle is 66 degrees 34 minutes, and the comparison is concluded; Point B is located on the Antarctic Circle, at this time there is a polar day phenomenon in the Antarctic Circle, so its day length is 24 hours, the time of point A is 12 o'clock at this time, and the difference between it and the meridian where the intersection point of the morning line and the Tropic of Cancer is located is 120 degrees, that is, the difference is 8 hours, according to the "East plus West Minus" can be calculated at 4 o'clock of the sunrise time of this point, and then according to the sunrise time here the day length of point A is 14 hours, point D is at the equator, its day length is 12 hours, and the day length of point C is 4 hours. Hence the conclusion above.

5) 66 degrees 34 minutes; 46 degrees 52 minutes Reason: It can be calculated according to the formula for calculating the altitude angle of the sun.

I hope you can see it, hehe.

This question involves the following knowledge points, let's solve them one by one.

First of all, to do this kind of question, you must accurately judge the direction, and distinguish the direction of the northern and southern hemispheres and the east and west. Distinguishing between latitude and longitude is the most basic.

a) Judge the season. Looking at the length of day and night, it is the area size of the two colors of black and white, which is applicable to both the northern and southern hemispheres: the length of the day and the short night are summer, the length of the day and the length of the night are winter, and the equal length of day and night is spring and autumn.

Summer in the Southern Hemisphere is winter in the Northern Hemisphere, winter in the Southern Hemisphere is summer in the Northern Hemisphere, and the answer is spring and autumn. The southern hemisphere in the question is obviously whiter than black, that is, the days are longer and the nights are shorter, so the southern hemisphere is summer.

b) Distinguish between morning and dusk lines. This kind of question only needs to understand the phrase "the east rises and the west falls". See the sun in the east on the morning line (daytime) and the sun in the west on the dusk line. At the junction of black and white in the question, the east is day and the west is night, so this line is the morning line.

c) Momentary issues. Find the equator first, because the equator is always the same length of day and night, 12 hours each. The intersection of the equator and the morning line is 6:

00, the intersection of the equator and the dusk line is 18:00, which will not change. For every 15° difference in longitude, the time difference is exactly 1 hour, which is the knowledge point of the time zone lesson.

Then the time is determined according to the principle that time is east plus west minus, 15° east of the intersection point is 7:00, 15° west of the intersection point is 5:00, and so on.

Only half of the world is shown in this diagram, that is, only half of the equator, or 180 degrees of longitude. In the figure, 7 meridians are used to divide the 180° into 6 parts, each part is 30°, which is 2 hours. The point A asked is east of the intersection of the morning line and the equator, and the difference is 90°, so it is 6 o'clock plus 6 hours, and point A is 1 2:

00。d) Day and night time. Count the longitude along the parallel, 1° is 4 minutes, 15° is 1 hour. Remember the rules:

The length of the day plus the night field is equal to 24 hours, the morning time is equal to the afternoon time, the first half of the night time is equal to the second half of the night time, the equator is always the same length of day and night, the polar day is 24 hours long, and the polar night is 0 hours long. The picture is halfway up the world, so there is only the second half of the night and the morning, a total of 12 hours. Point d is at the equator and is fixed at 12 hours.

In the picture, point C is on the morning line, and the difference from 6 o'clock is 60 degrees longitude, which is 4 hours, so point C is the sunrise at 10 o'clock. Because the morning and afternoon hours are equal, and noon is 12 o'clock, the sun must set at 14 o'clock in the c place, and the day length in c is only 4 hours. The same is true for the rest.

e) Sunrise time. It is to look at the intersection of the meridian and the morning line where c is located, and the difference is several hours from 6 o'clock. The same goes for sunsets.

f) Solar altitude angle. It is 0° on the morning and dusk line, and 90° above the direct point of the sun. The closer you are to the point of direct sunlight, the higher the solar altitude angle.

g) Sun elevation angle at noon. The height of the Sun at 12 noon is the angle of the Sun's altitude at 90° minus the number of degrees of latitude between the point and the point where the Sun is directly shining on the meridian where the Sun is directly shining at this point.

It's a bit hasty, but these are basic, the knowledge points of grabbing points, I hope it can help you, and the seniors can only help you get here!

1: Antarctic polar day, so it's summer in the Southern Hemisphere, and from black to daytime is morning line a

2:12 o'clock 12 hours 10 o'clock First of all, the earth on the map opens up and you can see that there are 12 meridians, and the midpoint of the equator is 6 o'clock, and each meridian is separated by 30°, according to 15° for an hour, a total difference of 6 hours, and the equator always rises at 6 o'clock and falls at 18 o'clock, so the d day is 12 hours long, and it is still the same as before, and the equator is 6 o'clock sunrise, and the difference between two meridians is 6 o'clock, which is 4 hours, so it is 10 o'clock sunrise.

3: c The altitude of the sun is 0 on the morning and dusk line

4: On the ADBC chart, the Sun is directly on the Tropic of Capricorn, so A is at the equator, the height of the Sun at noon is 66°34' min, B is 23°26' C, it is located in the Northern Hemisphere, and it is above 60°, so do not count (Noon Sun Altitude = 90 - the latitude distance between the direct point and the desired point).

As you can see from the chart, the closer you get to the equator, the closer the day length is to 12 hours. b. Polar day, the southern hemisphere day is greater than night, and the higher the latitude, the longer the day.

5: 66°34' The equator and the Tropic of Cancer differ by 23°26' b 46°52' b at the Antarctic Circle and the Tropic of Cancer (the height of the Sun at noon = 90 - the latitudinal distance between the point of direct radiation and the point sought).

So tired--

The Antarctic Circle is fully bright, indicating that the sun is directly shining on the Tropic of Capricorn The season is there The intersection of black and white is the morning and dusk line, and it is judged by the direction of rotation whether it is morning or dusk.

At point A, first find the morning and dusk line, find a standard time, and then push A to eat... Geography is interesting, so let's take your time.

Continue: d At the equator, it is recommended to see what are the characteristics of the length of day and night in the four seasons of the equator, and then you can push the time of point c, the time of sunrise, and the length of the day.

The height of the sun on the morning and dusk line is 0

ABCD solar altitude arrangement; The closer to the direct parallel, the higher the altitude when it is direct, the day length is arranged, the closer to the south pole is longer, and the noon solar height can be obtained by the difference between the latitude of the 90-finding point and the latitude of the direct sun.

The white part is the night hemisphere, and the South Pole has a polar night, indicating that it is summer in the Southern Hemisphere, the earth turns from west to east, and the diagonal line where point C is located is the morning line.

On the equator, sunrise at 6 o'clock and sunset at 6 p.m., according to the morning and dusk line, a difference of 15° is one time zone.

The time at point A in the figure is 12 o'clock, and the day length at point D is 12 o'clock. The day length at point C is 4 hours, and the sunrise time at point C is 10 o'clock.

1) Summer, morning line.

2) 12 o'clock, 12 o'clock, 4 hours, 10 o'clock sunrise.

3) C (4) ADBC, BADC (5) 66 degrees 34 minutes 46 degrees 52 minutes.

The Earth's hourly autotransmission angular velocity from west to east is 15 degrees per hour, compared to the Earth, the direct point of the sun and the morning and dusk line move from east to west every hour 15 degrees of longitude, to keep the solar altitude angle unchanged, it can only cross 15 degrees per hour to the west

2.No answer To solve this question, you need to know the two date dividing lines, i.e., the meridian at 180° and 0. The ratio of the two date ranges is 1:

3. If the proportion of the new day is 1 and the proportion of the old day is 3, because the east of the meridian at 0 o'clock to 180 ° is a new day, the longitude difference between the meridian at 0 o'clock and 180 ° is 90 °, that is, the meridian at 0 o'clock is 90 ° E, then the 30 ° E local time is 20 o'clock. In the same way, if the proportion of the old day is 1, then the difference between the longitude of 180° east and 0 is 90° longitude, that is, the meridian at 0 is 90°W, then the 30°E time is 8 o'clock, answer: 8 o'clock or 20 o'clock.

The first question, chasing the sun, the time is early in the east and late in the west! The constant height of the sun means that the local time is the same, so to the west, the earth is divided into 360 degrees for 24 hours, and one hour is 15 degrees for one hour. Therefore, the first question chooses D!

The second question, if the ratio is 1:3, then 24 1+3=6 But it is not stated whether the new day is 1 or 3, then the 180-degree meridian time is 6 o'clock or 18 o'clock, then 30 degrees east longitude is the second district of the east 180 degrees is the 12 districts of east and west, and the two places are separated by 10 time zones, and at 6 o'clock push west for 10 hours and 18 o'clock push west for 10 hours, that is, the time is 8 o'clock or 20 o'clock, then there is no correct answer to this question! I hope the landlord can understand, if you don't understand, please ask!

Question 1: d

The Earth's rotation direction is from west to east at a speed of 15°, and in order to remain at the same height of the Sun, it must catch up with the West at a speed of 15°.

So, the answer is d.

Question 2: The four options listed a, b, c, and d are incorrect, and the answer is e......8 o'clock or 20 o'clock when the ratio of the range of two dates in the world is 1 3, there are two cases:

First, today yesterday = 1 3;

Second, yesterday today = 1 3;

It can be inferred that at 90°W or 90°E, Greenwich Mean Time (UTC) is 6 or 18 o'clock. The difference between 30°E and the prime meridian is 2 time zones, so the time at 30°E and 10°S is 8 or 20 o'clock.

(2011 Baoji Simulation) 8If you want to "chase the sun" and stay at the same height with the sun, you must:

a.30 ob. per hour across longitude to the east30 oC per hour to the west15od. of longitude per hour to the east15o longitude per hour to the west

9.In this case, the international standard time is ( ).

Always, always, always.

10.At the time of the Youth Olympic Games, the following statement was correct ( ) aThe length of the day in Beijing reached its highest in a year.

b.Cape Town is starting to enter the dry season.

c.It was the period when the number of icebergs in the seas near Antarctica was the lowest.

d.Ships heading east through the Strait of Gibraltar were against the wind and water.

Answer] 9 choose B, 10 choose C.

Yes, there is no correct answer in the above 4 options for the answer to question 2. 10° south latitude has no practical use here.

The global ratio of the range of two dates is 1:3. The first possibility is that 90°w is the meridian at 0, so the longitude at 30°E is at 8;

The second possibility is that 90°E is 0 time longitude, so 30°E is 20 hours.

The answer to the second question is 20 hours.

I tried my best. I forgot about it after the exam.

The first c the second, the title is not clear, what date?

c Radio communications were interfered with and the Internet was severely disturbed by bridge clearance.

Because solar storms disturb the ionosphere.

Influence on the Earth's magnetic field Aurora (Aurora) is a brilliant and beautiful light that appears at night due to the high dissipation of the sun's charged particles (solar wind) into the Earth's magnetic field in the vicinity of the Earth's north and south poles.

c When a meteorite falls on the ground, it is not a celestial body.