Geography calculates time, latitude and longitude questions. Come and help me!!!!!!

1 ** gives the length of the day on the summer solstice, and this length of time is the night length of the winter solstice, so it can be concluded that the day length of the winter solstice is 9 hours, the day is bounded by 12 noon, and the morning and afternoon days are 4 and a half hours long, so the answer is introduced.

2. When calculating longitude, you need to find a longitude that knows the longitude and local time, and there is only Beijing time in the question, and only the spring and autumn equinox can know the local time, because everywhere, the spring and autumn equinox is the sunrise at 6 o'clock local time and the sunset at 18 o'clock. Therefore, using the sunrise (or sunset) time of the spring and autumn equinox given in the material, it is obtained: at 6 o'clock local time, Beijing time is 6:40, and the longitude difference is 10 degrees, so it is 110e

The first question he gave the summer solstice day length, this time is the night length of the winter solstice, and then look at the summer solstice sunrise and sunset time to calculate the local longitude 110, because the summer solstice day is 15 o'clock, then the sunrise time (Beijing time) is 4:30, but the local time is 5:10 sunrise, in fact, you can calculate it directly with two minutes, the local area is forty minutes later than Beijing, I hope to help the landlord Ha...

If the equinox is the standard, we can know that the sunrise time on the summer solstice is 1 hour and 30 minutes earlier than the equinox, and the sunset time is 1 hour and 30 minutes later than the equinox. Then you can calculate the pull of the winter solstice, because it is the winter solstice, that is, the day when the sun is the lowest from the earth, so it is the late sunrise and the early sunset, so 8:10 and 17:10 can be calculated according to the previous law

This question solves the problem of geographical location first.

1.Equinox: Sunrise and sunset at 6 a.m. globally, 6:40 a.m. Beijing time; At 18:40, the sunrise here is later than Beijing, and its longitude 120 is used to get the longitude where it is located, and I will not talk about the latitude.

2.If you have latitude and longitude, ask for the first question. First, calculate the meridian m with a sunrise time of six o'clock at the intersection point with the equator. Using (m,0), the sunrise and sunset time is calculated from the just-derived (x,y).

110 is calculated using time, a longitude difference of fifteen minutes.

1.Draw the number line, and draw the conditions in each question on the number line.

2.Do poorly. 3.The difference in longitude is divided by 15

4.East plus West minus.

The question asks the point where the sun shines directly, which must be the place at 12 o'clock in the local time, and use 17 o'clock - 12 o'clock = 5 hours 5 * 15 = 75 120 east longitude - 75 = 45 east longitude.

Analytical method: The longitude where the direct point is located is 12 o'clock, as long as you know how much time the difference between the local area and the 12 o'clock is how much time you can find the difference in longitude. The longitude when taking advantage of the place where the local place is located.

The local area is 120 degrees east longitude, which is 17:01 minutes, and 12 o'clock is more than 5:01 minutes, and in the use of 15 degrees per hour or 4 minutes per degree, you can know the difference of 75 degrees and 15 minutes (because 4 minutes per degree, 1 degree is divided into 60 minutes, and the number of longitudes that is different in 1 minute is 60 4 degrees that is 15 minutes), so 120 degrees minus 75 degrees 15 minutes, and 44 degrees 45 minutes east longitude The answer is: 44 degrees 45 minutes.

A: In the first picture, the two meridians are 165 degrees, and the latitude is also the same (15 degrees).

Here's the idea: except for 0 degrees and 180 degrees, the other meridians are one in the east and one in the west (the same degree, e.g. 165 degrees east longitude and 165 degrees west longitude), right? So, the coordinates of point a, the meridian can only be 165 degrees west longitude (it's on the left).

The meridian of b is 165 degrees east longitude.

In fact, on this diagram, its 0-degree meridian is between two 165-degree (such a long-span meridian, and drawn as a straight line, is wrong, and the person who asked the question may think that it is very proud, because such a large span meridian must be curved, which is what the following figure looks like).

In the same way, latitude can be known. The equator is between two 15 degrees, a is 15 degrees north latitude; b is 15 degrees south latitude. Which hemisphere is not much to say.

The brother did the right thing, but he didn't explain.

The second picture is easier.

The weft is easy to see, not much to say.

The meridians, according to the law of decreasing degrees from right to left, the meridians on the chart are all east longitudes, I will write them for you directly:

A: 60 degrees north latitude, 35 degrees east longitude.

b: Latitude 0 degrees (equator), longitude 95 degrees East.

C: 30 degrees south latitude, 35 degrees east longitude.

D: No, hehe.

Point A coordinates (165°W, 15°N) are located in the (northern) hemisphere (western) hemisphere.

Point b coordinates (165°E, 15°S) are located in the (southern) hemisphere (eastern) hemisphere.

According to the geographical plane, the position is determined as "up, north, down, south, left, west, right, east" to obtain the latitude and longitude, and then divides the hemisphere through the north-south boundary of 20°W and 160°E. The same is true for the next question.

The conditions for this question are incomplete, because the length of the day in different latitudes is different on different days, and it is also said that it is impossible to know the place of a certain point only when it is determined that it is in the morning line (the equator is always equal in day and night, so the point on the morning line on the equator represents 6 o'clock, and the point on the evening line represents 18 o'clock).

Conclusion: This question only tells that 30 degrees west longitude is on the morning line, and if there are no other conditions, a precise time cannot be determined, so the longitude of :00 cannot be calculated.

1. Calculated for local time and district time.

1) The time difference between the two places is calculated by using the absolute difference of the prayer bench between the two places, the time difference of 1 degree of longitude is 4 minutes (15 degrees of difference of 1 hour), and the time zone is calculated every other time zone, and the time difference is one hour.

2) If you know the time of a certain place and find the time of another place, you should mainly determine whether the place you are looking for is located on the east or west side of the known time, and the calculation rule is to add the time difference to the east and subtract the time difference to the west.

3) In the calculation process, if the 180-degree meridian is crossed, that is, the international date change line, then one day will be subtracted when crossing the date line to the east, and one day will be added when crossing the date line to the west.

2. If the time is known to find the longitude, the above method can be applied in reverse.

This question is very simple, let me remember it for you later, and it is a common test question.

First of all, 30 ° west longitude is on the morning line (, indicating that the day and night at this time are of equal length, that is, i means that it is reading the spring equinox or autumn equinox (otherwise the morning line cannot be on a meridian line, there is only one intersection point of the infancied sparrow), according to an hour of 15 °, so at 12 o'clock should be added 6 * 15 ° = 90 °, so the longitude should be -30 + 90 = 60 ° E. In the same way, we know that the dusk line and the morning line correspond, which should be 150°E

A dot is a dot. It is 6 hours apart, so the longitude difference is 6*15=90°, because the time is earlier and later than the difference, so further west, the longitude is 30°+90°=120°WDid you get it?

1 choose b, from the question, it can be seen that the local day length is 10 hours, using the formula: sunrise time = 12 - day length 2

The local sunrise time is 7 o'clock. Therefore, the difference between local time and Beijing time is 20 minutes, 1° = 4 minutes, so the difference with Beijing time is 5°, and the time here is earlier than Beijing time, so the longitude is greater than Beijing time, and Beijing time is the time of the East Eighth District, so it is 120°E

So locally it's 125°E

2 choose A, because the day length is 10 hours, you can know that the sun is directly in the southern hemisphere, so May and July are excluded. And there is a difference of 2 hours from the equinox, so it will not be around the autumnal equinox, so September is excluded.

Time questions, to remember 1 ° = 4 minutes, 15 ° = 1 hour, follow the east morning and west evening, the earliest in the world is the East 12 districts, the latest is the West 12 districts, so the closer to the East 12 districts, the greater the time!!

In the first question, the sunrise time plus sunset is divided by two to get the local noon sun reaching its highest of 12 o'clock.

But it was 11:40 a.m. Beijing time

Indicates that the latitude of the place is west of 120°.

20 minutes short.

It's 5° worse, so it's 115°

Choice C Question 2: First, you subtract the sunrise time by the sunset time.

Get 10 hours.

That is to say, the days are now short and the nights are long, and it is in our country.

Northern Hemisphere. So it can only be the winter half of the year.

I can only choose a November.

If you still don't understand, you can ask.