High School Geography Time Zone Problem Solution 5

The question of time zone involves many aspects, and the question is very flexible.

First of all, it is necessary to understand the division of time zones, longitude 15° is a time zone, 24 time zones in the world, 12 time zones in the east and 12 time zones in the west, and remember the time zones of some places, such as Beijing, Tokyo, Moscow, New York, etc.

Secondly, know the basic algorithm of time zones, the time zone is added to the east (but the date line), and the same is true for the west.

This is just the most basic knowledge, I hope you can ask specific questions, I hope it can help you.

First of all, it is necessary to understand the division of time zones, longitude 15 ° is a time zone, there are 24 time zones in the world, and there are 12 east and west time zones.

It's okay, I'll help you, I know very much, hehe.

The most critical time zone problem is to find the time of another time zone when you know the zone of one time zone. There are two basic knowledges, 1. The world is divided into 24 time zones. Take the prime meridian (that is, the meridian that passes through the former site of the Greenwich Observatory in London, England) as the 0 degree longitude, and a total of 15 degrees to the east and west is the 0 time zone (also called the middle time zone), and then continue to divide a time zone every 15 degrees from east to west, and the ** meridian of each time zone (the value is equal to the time zone serial number multiplied by 15, such as the east 2 ** meridian is 30 degrees east longitude, and the west 5 ** meridian is 75 west longitude) is the unified standard time used by the entire time zone, that is, zone time.

It is worth noting that the East 11 and West 11 regions are divided into east and west longitudes respectively, so from east longitude to 180 degrees this degree is the East 12 districts, west longitude to 180 degrees is the West 12 districts, and the east and west 12 regions are only half time zones each, which together are the complete 12 time zones. 2. One hour should be added for each time you cross a time zone to the east, and one hour should be subtracted from the zone time for each time zone to the west. For example, Beijing is in the East 8th Ward and Tokyo is in the East 9th Zone, so the Beijing time is 8:

At 00:00, Tokyo time is 9:00 and London time is 00:00

The longitude of a place + the obtained integer quotient is the time zone where the place is located or the longitude of a place 15° If the quotient obtained is greater than 1, if it is less than, the quotient remains unchanged, and the quotient is the time zone where the place is located. Time of the place sought Time of known place 4 minutes Difference in longitude (east plus west minus).

1. Within a certain area, a kind of time is used uniformly, and this kind of time is called regional time. Zone time is also called standard time, each time is used in the time zone ** longitude is located in the place of the longitude for the whole area of the time (the longitude divisible by 15 is the ** meridian of the time zone), this time becomes the zone of this time zone, in the zone time, in addition to the east and west twelve zones, any two adjacent time zones, the zone time difference is one hour, between any two time zones, a difference of several time zones, the zone time difference is a few hours.

2. In terms of time difference, there are several time zones between the two places, and the difference between the zone time is a few hours. If the location of the known zone is in the east and the desired location is in the west, the time zone difference between the two places is subtracted from the time zone between the two places. If the location of the known zone is in the west and the desired location is in the east, then the time zone is added to the time zone difference between the two places, that is, east plus west minus. So in terms of timing, the time zone in the east is earlier than the time zone in the west, in short:

It's morning and evening.

3. Find the time zone: the number of time zones is known to be longitude 15° (the quotient is rounded to an integer, which is the number of time zones). When finding the zone:

Time of the desired zone Time of known zone Time zone difference (east plus west minus). Time to find place: Time to find place Time to know place Time 4 minutes degree Longitude difference (east plus west minus).

4. In the local time, because the earth is constantly rotating, the direction of the surface of the earth is constantly changing relative to the sun, so the time of each place advances in turn. So, at the same moment, the time is different in different places on the planet.

1. Choose C

Because it can be seen from the question that the ship must have passed the international date line, so the date will definitely change, subtract one day from west to east, and add one day from east to west. If the ship crosses the 180° meridian, it is a different situation, and the test point is that the international date line does not coincide with the 180° meridian.

2. From the date of the international day of selection, the earlier you go east, the earlier, for example: Japan is earlier than Beijing, Beijing is earlier than London, and London is earlier than New York.

I'm more than yes.

The second answer is definitely true, a time is 12:10 on the 8th

b 8 no. 5:10

c No. 8 8:10

D 7 23:10

The first question should be correct, I'll take a look at it.

Answer: aAt 17:45 on the 29th.

Analysis: Beijing time is the 8th East Zone, and New York and New Jersey are in the Atlantic time zone of the United States, that is, the West 5th Zone, and the East 8th Zone is 13 hours ahead of the West 5th Zone.

So, when Hurricane Sandy made landfall from New Jersey at 6:45 a.m. Beijing time on October 30, 2012, New York time at 17:45 a.m. on October 29, 2012.

Addendum: In fact, all the answers are wrong, the correct one should be at 18:45 on the 29th, because October is in the United States Daylight Saving Time (starting from the second Sunday in March and ending on the first Sunday in November), it should be adjusted forward by 1 hour, so in the United States, the 5th West is 12 hours behind the 8th East Daylight Time.

And then add: the formula for calculating the time zone.

Calculated zone time = known zone time - (time zone when known zone - time zone when the zone to be calculated), (Note: East time zone is positive, West time zone is negative).

It is known that the Beijing time is 6:45 on October 30, and the district time of New York (West 5th District) is found.

New York time = 6:45 - [8 - (-5)] = 17:45 (i.e., 17:45 New York time on October 29).

Note: When the calculated zone time is negative, 24:00 should be added and the date should be subtracted by one day, i.e. from October 30 to October 29).

a At 17:45 on the 29th.

Beijing East 8th District.

West 5th District, New York.

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.

That is, at 17:45 on the 29th.

New York is located in the West 5th District, Beijing time is the time of the East 8th District, a difference of 11 hours, crossing the 180° meridian minus one day, so New York time is 17:45 on the 29th.

Answer: a

From my own experience, we have to think more about physical geography by ourselves, regardless of what the teacher says, as long as we have our own ways to use our knowledge, it is good!

First of all, we must understand that the longitude interval of 15 ° on the earth is one hour, and the principle of dividing time zones is to take every 15 ° as a time zone, but due to the influence of national geographical and political divisions, some countries span several time zones but still use the time zone where the capital is located as the time standard! For example, our country starts from 135° east longitude in the east to 73° east longitude in the west! If I divide it according to the theory, I have crossed nearly 4 time zones, but in order to unify the time, my country unanimously uses the zone time of Beijing time (East 8 districts)!

Secondly, after understanding the relevant division principles, we should try to memorize them. This must be remembered, don't be afraid, it's easy to say, countries are mainly according to their own political divisions to divide the boundaries of the time zones of each country, of course, some countries use several time zones at the same time, that is because of the large longitude spanned by the land area! It takes memorization, but in the case of high school, we just need to memorize the time zones of several important countries.

Time zones are not difficult, hehe.

The time difference comes from the rotation of the earth, so first figure out the direction of the rotation of the earth.

Suppose the sun rises at 6 o'clock in the east and the sky is still at 0:00 in the middle of the night in the west place. By 6 o'clock in the west, it will be 12 noon. The east side should go ahead, remember this order, and you won't be mistaken about the addition and subtraction of time zones.

There are not many time zones on the earth, as long as you distinguish the addition and subtraction, and calculate the wrench index! That's how I've always counted.

When crossing the date line, it is easy to make people dizzy? You can ignore it and count around the earth from the other direction.

Although the method is a bit stupid, the time zone of the exam is not a few points, so it will not delay much time.

I don't need to talk about the 0 time zone and the 12 east and west zones.

15 degrees per time zone, 1 hour of time.

Finally, the 12th East and West Districts each span longitude degrees, bounded by 180 degrees east and west longitude.

There is a 1-hour difference in time between two adjacent time zones.

Time in the area sought = time in the known zone + or - (East plus West minus) Time zone difference (same subtraction and difference addition) East plus West minus: what is sought is added to the east than the known, and what is sought is subtracted from the known west.

Same subtraction and different addition: subtract if it is the same eastern time zone or the same western time zone; An eastern time zone and a western time zone are added, and the absolute value obtained is the time zone difference.

If you know the 12 points in the East 2nd District, find the number of points in the East 8th District, and put in the formula:

Time = 12 + (8-2) = 18 points.