High Chinese subject geography problems, high Chinese subject geography

There are two date lines, one at 0° and the other at 180°. The time zone is memorized, starting from the 0° meridian, the 0° meridian to the east and west, that is, between east longitude and west longitude is the 0 time zone, and then every 15 ° east or west is divided into a time zone, called the east 1 area, the east 2 area... The 11th district of the eastern part of the province, the 1st West Zone to the 11th West Zone to the west, and the 12th time zone from 180° east to west. If you cross the 180° date line from west to east, you will lose one day, and if you cross the 180° date line from east to west, you will add one day.

For example, if you go from China to the United States and take the Pacific route, you have to subtract one day from the Chinese date when you cross the 180° meridian, and if you go to November 11 in China, you will have to go through November 10Coming to China from the United States is the opposite.

If the time zone is different, it is the same east longitude or west longitude, so use a large decrease, and if you have an east and a west, you will add it up.

Teach you one of the stupidest methods, when you take the exam, you really can't draw the time zone map, and you should always be able to draw the time coordinate map, right? Mark the time zone and count them one by one.

That's it, about the example of longitude and latitude plus one day minus one day, well! For example, a plane wants to fly from Beijing in the eastern hemisphere to Western Europe, Western Europe belongs to the western hemisphere, according to geographical knowledge, the time in the eastern hemisphere is one day faster than that in the western hemisphere, to avoid confusion in passenger time, change the time according to the provisions of the international date line, add one day to the time of flying to the eastern hemisphere, and subtract one day from your time when flying to the western hemisphere. The problem of counting time zones is determined according to the prime sub-mother, which line is located in London, England, and you go to the map to familiarize yourself with which time zone all the countries on the earth are located, and then you don't have to count, you can understand everything at a glance, which is how I learned it at the beginning.

Time zones are classified according to longitudes.

The further east you go, the earlier it is.

1 It should be the Ob River in Russia, because it is located in Siberia, which is a small population and economically weak region of Russia, and the temperature is cold, and most of the time it is frozen, which is not conducive to shipping and has no economic push.

2 The natural cause of the shrinkage of the sea area is the movement of the continental plates, and the new land created by the movement of land and sea occupies the sea area. Anthropogenic causes are land reclamation, river sediment (perhaps also due to natural causes).

3 Periodic flooding first brings floods, but also fertile soil. In addition, it is a regular flood in summer and autumn every year, which not only brings sufficient water, but also brings a lot of sediment and humus to both banks, which is very conducive to the growth and irrigation of crops. The ancient Egyptian civilization was born here long ago.

There are popular local proverbs that say "the Nile is the mother of Egyptian civilization" or "Egypt is the gift of the Nile".

I used to be a little confident in geography in high school.

1. Russia is located at a high latitude First of all, it is due to natural reasons Low temperatures and long ice ages of water Most of Russia is an endorheic river, so the shipping value is not large.

2. I think it's about the same as upstairs.

3. Impact scores positive and negative impacts.

Positive impact: Although the river is overflowing, the upper and lower layers of water are exchanged, bringing abundant nutrients and providing a lot of nutrients to the land.

and is the soil with sufficient moisture.

Negative marketing: Floods may have a certain impact on crops.

1) The northern latitude is high, and the winter is frozen, and the freezing period is long, and the shipping period is short. 2) The water flow is not large, and the shipping volume is small. 3) The river is sparsely populated, the soil is poor, the mineral resources are few, and the development value is insufficient.

The climate is cold, there are ice periods, and rivers flow from low latitudes to high latitudes.