Traditional Culture Encyclopedia - Weather inquiry - Chongqing weather time-sharing

Chongqing weather time-sharing

Time topic

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Division of time zones. International standard time. Beijing time. Time domain application.

College entrance examination trend

Time calculation is conducive to cultivating students' geographical thinking ability and spatial imagination ability, which is widely used in production and life and is also the focus of college entrance examination over the years. This kind of questions has novel image design and flexible questions. Specific propositions can be combined with a major geographical event (such as leaders' visits, earthquakes, typhoons, spacecraft launches, etc.). ), and the sunshine map is often used as the starting point of a long-span comprehensive investigation.

Basic necessities

1. local time: due to different longitudes, the clock time is different, the longitude difference is 1, and the local time difference is 4 minutes. The time in the East is always earlier than that in the West.

2. In order to unify the time, the world adopts the method of dividing a time zone every longitude 15, and divides the global * * * into 24 time zones. Based on the prime meridian, the east-west longitude range of 7.5 degrees is zero time zone (also called intermediate time zone); The east 12 area and the west 12 area each occupy 7.5 longitudes, that is, each is half a time zone, so they are combined into a complete time zone, which is called the east/west 12 area.

3. Each time zone takes the position on the central meridian of the region as the time and instant zone used by the whole region.

4. International international date line: It takes one day to cross the international international date line from west to east and one day to cross the international international date line from east to west. Theoretically, the international international date line is 180 longitude, while the actual international international date line has several bends.

5. According to international regulations, in principle, the meridian 180 is regarded as the dividing line between today and yesterday on the earth, which is called the international international date line, and it is an artificial boundary. It takes one day to cross the Japanese border from west to east and one day to cross the Japanese border from east to west; The meridian at 0 o'clock (local time) is a natural boundary, which constantly changes with the rotation of the earth. The meridian date from west to east at 0 o'clock should be increased by one day, and the meridian date from east to west at 0 o'clock should be decreased by one day. The date line and the meridian at 0 o'clock may coincide, that is, the local time of meridian 180 is 0 o'clock, and the whole world is a date at this time.

6. Beijing time is the legal time in China, when Beijing was located on the central meridian 120 E of the East Eighth District.

7. Universal Standard Time is the time when 0 crosses the line, which is also the time zone of the central time zone.

8. What is the method of calculating time zone with known longitude?

Answer: Number of time zones = known longitude ÷ 15.

Note: the remainder is less than 7.5, and the integer obtained by division is the number of time zones; The remainder is greater than 7.5, and the number of time zones is the integer+1; One place is in east longitude, which is the eastern time zone; West longitude, that is, the western time zone.

For example, calculate the time zone 1 16 E:

If 1 16 ÷ 15, the remainder of 7 is 1 1, then the time zone of16 e is 7+ 1, which is Dongba.

9. Given the number of time zones in a certain place, what is the method to calculate the central meridian and range of time zones?

Answer: longitude of central meridian in this time zone = number of time zones in a certain place × 15 o.

Description: The east time zone is east longitude, and the west time zone is west longitude, east longitude 180o and west longitude 180 o are collectively called 180 o longitude; The range of a time zone is the sum and difference obtained by adding and subtracting 7.5 degrees from the degree of the central meridian of a time zone.

10. Is there a simple method to calculate the time without considering the actual direction, the moving direction of the object and the international international date line?

A: Yes, it is the method of borrowing Japanese by counting axes.

Every step should be advanced and consolidated.

Step 1: Very basic time calculation problem

(2005 National College Entrance Examination Volume III) At 23: 09 (East 7) on March 28th, 2005, a strong earthquake of magnitude 8.7 occurred in the waters near Nias Island, Indonesia. When the earthquake occurred, new york (West Fifth District) was working.

29 10: 09

C.29, 12:09; D.28, 1 1: 09。

Thinking of solving the problem: this is called time calculation problem. The essence of the test question is: When the area of East Zone 7 is 23: 09 on March 28th, what time is West Zone 5? Obviously, 23: 09-(7+5) =11:09, the date has not changed.

Answer: d

Step 2: Compare the basic time calculation problems.

A seagoing vessel set sail from port city ② of country B at 8: 00 am (local time) on June 5th, 2006, and arrived at port city ① of country A at 65: 438+03 28 days later. It's local time. The local time is: June.

Answer: (1) February 3rd at 5 o'clock.

Analysis: Question (1), the American port city of San Francisco is located in west eight District, and the seagoing vessel arrives in the time zone of London, England, so the time zone of 65438+8: 00 on October 5th, 2006 plus 28 days of 13 hours will be converted into zero time zone.

The third step is the time calculation of implicit information.

It is reported that the partial solar eclipse occurred on June 10 and June 14, 2004, starting at 9: 20 and ending at 10: 57. At the end of the eclipse in Harbin, Alaska 16: 57 was 13. The partial solar eclipse people saw there began on June 3rd 17: 55 and ended on June 3rd 18: 46. Look at the picture and complete the 9 ~ 1 1 question.

9. In the picture, A and B are located in Alaska.

A. You can see the whole process of this partial solar eclipse at the same time.

B. the partial solar eclipse first appeared at b, and then at a.

You can see the partial solar eclipse in C.B., but not in A.

D.b can only see the beginning of the partial eclipse, and A can only see the end of the partial eclipse.

10. Alaska time used in the report is

A. local time B. west 10 area

C. west ninth district. West eight district.

Analysis: Reading materials, Beijing time 65438+1October 14, 2004, 10: 57, Alaska time 16: 57, Beijing time 18 is earlier than Alaska time, so the time used in Alaska. Moreover, on June+10/October 13, 65438, the sun directly hit the southern hemisphere, and near the west longitude 150, the sun had set after 18 local time, so the partial solar eclipse could not be seen, and it could only be seen in the second place. The essence of this topic is time calculation and illumination mapping. A small number of students are obsessed with the word partial eclipse and fall into a misunderstanding of thinking.

President Hu Jintao arrived in Seattle (west eight District) at about 10: 50 local time on April 8, 2006. The local government adopted daylight saving time (earlier than local time 1 hour) and began a state visit to the United States and other countries for a period of 12 days. Answer the question 1-3 accordingly.

1, Beijing time at this time is

A, April 18, 1: 50, April 18: 50.

C, April 19, 1: 50 d, April 19, 2: 50.

2. At this time, it is on the equator, and the same day as Seattle belongs to the old hemisphere. The calendar is

A, 20 W to 2° 30' b E, 20 W to 92 30' E.

C, 2 30 ′ e to 92 30 ′ e and 92 30 ′ e to160 e.

3. During the visit

A. The afternoon shadow of Zengmu shoal changes from long to short and then to long.

B, Kaohsiung afternoon shadow changed from long to short.

C the midday sun shadow in Hawaii changes from long to short and then to long.

D, Seattle afternoon shadow changed from short to long.

1.c [analysis] It is difficult to examine the ability of information acquisition and processing in this topic group. Excluding the interference of daylight saving time, Seattle standard time is 9: 50 on April 18; According to the law of time change, it can be inferred that Beijing time is April 19 1: 50.

2.a [Analysis] At this time, the whole East Seventh District is at 0: 50 on April 19, and further east is the range of April 19, that is, the longitude from 97.5 east longitude to 180 is the same date, which is the same as that of Beijing. The rest of the old hemisphere, from 20 W to 97.5 E, has the same date as Seattle. Then according to the equator, day and night will be divided equally forever, and the local time is 18, which means the longitude is 2.5e.

April is spring in the northern hemisphere, and the direct point of the sun passes through the equator and moves towards the tropic of cancer. At noon, the shadow of Zengmu shoal at 4 north latitude gradually becomes longer; The midday shadows in Kaohsiung, Hawaii and Seattle all changed from long to short.

The fourth step is to calculate and judge the local situation with time.

(Tianjin Wen Zong, 2006) Scientists from China set out from A to B, C and D (the latitude and longitude of arrival and Beijing time are marked in the figure). Look at the picture 1 and answer the question 1 ~ 2.

1. When scientists arrive at the following places, the reality is that

A.b. ... has gone up. BC ... It's noon here.

CD。 ... the sun is below the horizon. ... the local date is 19.

2. Observing the sun in D, the correct combination of observation time (local time) and the direction of the sun is

3 o'clock in the northeast and 8 o'clock in the southwest.

C. 15: 00 northwest D. 19: 00 southeast

1.c [analysis] It is difficult for this topic group to investigate the geographical destination and spatial imagination through the time comparison and knowledge points of Sun's operation. According to the latitude and longitude of the four places in the figure, it can be inferred that when scientists arrive at various places, they arrive at B, C and D in turn:1October 29th 165438+4: 56, February 6th1104,1. At this time, it is winter in the northern hemisphere, summer in the northern and southern hemispheres, and the B day north of the equator is slightly shorter, so B won't get up until 6 o'clock; C it's not noon yet; The date of d is 18. Because of latitude, there is no extreme day and night phenomenon, and 0: 04 can only be night, so the sun is below the ground.

2.c [analysis] For the high latitude D in the southern hemisphere, it is the summer with extremely long days and extremely high sun height. In the local area, the sun rises much earlier than 6 o'clock local time, rising from the southeast; In the morning, the sun moves northward, from noon to the sky in the north; In the afternoon, it moved to the southwest, and it fell in the southwest much later than 18.

Xiaoying examination

1. (Final Exam in Pudong New Area) (Basic Questions) At 1 19, 15: 00 local time in 2006, the two-day informal APEC leaders' meeting 14 came to an end in Hanoi, Vietnam. In the afternoon, President Hu Jintao left Vietnam by special plane for Laos for a state visit. The geographical coordinates of Hanoi (East Seventh District) are (218 ′ n,10541′ e) and Vientiane (East Seventh District) are (1758 ′ n, 103 26). Answer the question accordingly: () C.

China National Radio and CCTV broadcast the closing ceremony live. At this time, Beijing time is

A. 1 19 October 15 hours B. 1 19 October 14 hours.

C. 1 1.09 16 hours D.1.1.0815 hours.

2. (Eleven experimental demonstration schools in Shanghai) (Mid-range topic) A plane flew directly from Shanghai to Los Angeles (west eight District) at 3 pm on March 8, and arrived at 10 local time on March 8, with a flight time of () b.

A. 19 in B. 1 1 in C.8 in D. 15.

15 The closing ceremony of the Asian Games was held in Doha, Qatar, at 20 pm local time on June 65438+February 2006 15 (East Zone 3), and Guangzhou, as the host city of the next Asian Games, sent a delegation to attend. The flight time is about 10 hour, and the delegation should be in Beijing time.

15, 15 hours

On September 27, 2006, as night fell, Jupiter was in close contact with a bright new moon, forming a beautiful astronomical landscape of "Jupiter combined with the moon". As far as most parts of China are concerned, the best time to watch this full moon of Jupiter is from 7: 00 pm to 7: 50 pm. When the public looks up at the sky, they will find that Jupiter is accompanied by a crescent moon, just like a pair of lovestruck men and women whispering, which is really beautiful. Jupiter is above and the moon is below, and the distance between them is only about 5 degrees. Then, Jupiter will fall on the horizon around 8: 30 pm, and this astronomical landscape will disappear. Answer questions 4-5 in the reading material.

The statement about Jupiter is correct.

Jupiter is the largest planet in the solar system.

B. There is an asteroid belt between Jupiter's orbit and Mars' orbit, so there are many Jupiter satellites.

Jupiter, Mars and Saturn are called "giant planets" because of their huge volume and mass.

D. "Jupiter combined with the moon" may cause an astronomical disaster in which Jupiter collides with the moon.

In the best time to watch Jupiter's full moon, the statement about new york is credible.

A. The sun is shining and the farm is busy. B.the wind is biting and the leaves are falling.

C. The night is deep and the electricity consumption is at its peak. D. the morning market is very busy.

Christian era

The opening ceremony of the 5th Asian Games/KLOC-0 was held in Doha, Qatar (25.5N, 52 E) on February, 2006 1(25.5 N, 52 E) local time. Answer questions 6-7 according to what you have learned.

6. The Doha Asian Games was held in 65438+February because

A. There is more precipitation and moderate humidity in this season.

B. This season, the point moves directly south, and the temperature is moderate.

C due to the high-altitude westerly wind, there is more precipitation in this season to avoid water shortage.

D. in summer, dusty weather can easily interfere with the game.

7. At the opening of the Doha Asian Games,

A. The White House is at its peak. B.the Taj Mahal is crowded with tourists.

C. The sunset reflects the Thames. D. The La Plata River is full of sunrises.

B.C.

(Middle School Affiliated to Jiangxi Normal University) (High Question) One day 1 (Beijing time) A plane took off from Beijing (40 N,116 E) and flew to Urumqi (44 N, 88 E) at 3: 30.

8. The comparison of sunrise and sunset time between Beijing and Urumqi on that day is correct ()

A. Sunrise in Beijing is earlier than Urumqi, and sunset is later than Urumqi.

B: Sunrise in Beijing is later than Urumqi, and sunset is earlier than Urumqi.

C. Sunrise and sunset in Beijing are earlier than in Urumqi.

D. Sunrise and sunset in Beijing are later than those in Urumqi.

Xiao Qiang, who lives in Beijing, flew to Urumqi to visit relatives. The day he experienced was ().

A. 14 hours 18 minutes B. 16 hours 22 minutes C. 15 hours 30 minutes D. 14 hours 42 minutes.

8.C 9。 B

(Weifang City, 2007) (High Question) The picture below shows the photos taken by a member of China scientific research team in the Yellow River Station (78 55 ′ N,1156 ′ E) within 24 hours, and answers the questions accordingly10-1/kloc.

10. Beijing local time (1 16 E) is about the time when the sun is at its lowest.

a . 7:00 b . 65438+8:56 c . 6:56d . 65438+7:00

1 1. When shooting, the latitude position of the direct sun point is most likely in

North latitude 1 degree 05 minutes, south latitude 1 degree 05 minutes.

10.C 1 1。 B

(Comprehensive Test for Graduating Class of Guangzhou Ordinary High School) (High Question)

The following table is the observation record of the sky conditions in Beijing and M on that day. Analyze and answer the question 12- 14.

12. This day is

A. Around the vernal equinox B. Around the May Day International Labor Day C. Around the solstice in summer D. Around the solstice in winter

13 There was no nighttime phenomenon on that day. M, mainly because

A. The sun never sets B. Atmospheric reflection C. Atmospheric scattering D. Aurora appears

14.m is located at.

A. equatorial region B. tropic of cancer C. mid-latitude region D. polar region

A C D