Where is the highest city in the world? What should we pay attention to in high altitude areas?

If you have been to high altitude areas, you will definitely be impressed. It is a slightly different feeling from your normal life. High altitude areas have high terrain, low air pressure, and thin oxygen. Most people may suffer from lack of oxygen when they go there, which is the so-called altitude sickness. So everyone must be prepared and have a strategy in advance before going!

Contents of this article

1. The highest city in the world

2. What should you pay attention to in high altitude areas?

3. The reason why rice cannot be cooked well in high altitude mountainous areas is

The highest city in the world

The highest city in the world is Nagqu, with an average altitude of about 4,500 meters. Nagqu, a prefecture-level city in the Tibet Autonomous Region, is located in northern Tibet, in the heart of the Qinghai-Tibet Plateau. It is the source of the Yangtze River, Nujiang River, Lhasa River, Yigong Zangbo River and other major rivers.

Nagqu City is the "northern gate" of Tibet and an important part of the country's five major pastoral areas. It is known as the "source of rivers" and the "water tower of China".

Nagqu City belongs to the subarctic climate zone, with a high altitude, insufficient heat, and a severely cold and dry climate, with oxygen content only half that at sea level.

Nagqu City is located in the northern part of Tibet Autonomous Region, in the heart of the Qinghai-Tibet Plateau. It borders Qinghai Province to the north, Xinjiang Uygur Autonomous Region to the northwest, Qamdo City to the east, Lhasa, Shigatse, and Nyingchi to the south, and Ali Prefecture to the west.

What should you pay attention to in high altitude areas?

The oxygen in high-altitude areas is relatively thin, so you can carry an oxygen tank with you to avoid hypoxia. At the same time, you should also reduce the number of times you wash your hair and take a bath to avoid colds. It is best to wear a sun hat and sunglasses, because the ultraviolet rays in the plateau area are strong and direct exposure to the skin can cause greater damage to the skin.

High altitude areas have high terrain, low air pressure, and thin oxygen. Most people may suffer from lack of oxygen when they go there, which is the so-called altitude sickness. People with high blood pressure or severe anemia should not blindly go to high altitude areas. At the same time, you should consult people who have been there and check the precautions online.

People who do not live in high altitude areas should fully understand their physical condition before going, and it is best to have a strict physical examination. People who have never been to high altitude areas should pay attention to rest and get enough sleep before leaving. In high altitude areas, try to reduce the number of times you wash your hair and take a bath to avoid colds.

The air is thin and the ultraviolet rays are strong in high altitude areas. Direct exposure to the sun can cause great damage to the skin. Wear a sun hat and sunglasses when staying outdoors for a long time. Keep the room ventilated at night and keep the air flowing. Drink plenty of water, try not to drink alcohol, and avoid strenuous exercise.

The reason why rice cannot be cooked well in high altitude mountainous areas is

The reason why rice cannot be cooked in high-altitude mountainous areas is low air pressure. The boiling point of water changes with the change of atmospheric pressure. The higher the altitude, the thinner the air and the lower the air pressure, and the lower the boiling point of water in this place. For example, when boiling water on Mount Everest, as long as it reaches 73.5℃, the water will be "boiled", and such "boiled water" cannot cook food.

Therefore, geologists and mountaineers use high-pressure cookers when working on high mountains. Pressure cookers are made using the principle that the boiling point increases under high pressure.

The sealed lid prevents the steam in the pot from escaping, so the air pressure increases, the boiling point increases, and the food cooks faster. In high altitude areas, using a pressure cooker can avoid the problem of lowering the boiling point of water and making it difficult to cook food.