What do you know about tornadoes? Can you share the science with us?

The central part of the United States is called the port of tornadoes, where there is the terrain that is the easiest to form tornadoes in the world. The economic losses caused by tornadoes are immeasurable. A large number of houses were blown down and cars were twisted into twists. So how did tornadoes form? What should I do if I encounter a tornado? Where is the safest place?

The temperature inside the tornado is lower than that outside 10 to 20 degrees Celsius, and the air inside is thinner. According to researchers' estimation, the air density inside a tornado is about 20% lower than that in high altitude areas, which means that standing in a tornado is like standing on an 800-meter-high mountain peak. Breathing thin air will make you suffocate quickly, and at the same time, due to the ultra-high wind speed, a lot of debris, glass, iron sheets and wood will be swept away. However, many people say that they were caught by the eyes of a tornado and were not injured. They left safely after being dispersed. So where is it safer to hide?

The sign of tornado is very obvious, and the sound of wind whistling is very loud, which will form funnel clouds in the sky. At the same time, the meteorological bureau can predict the arrival of tornadoes in advance, which is one of the reasons why tornadoes cause fewer casualties. The best hiding place for tornadoes is the basement. Secondly, there are thick concrete buildings and heavy buildings, but don't hide under the bridge opening of the bridge and the overpass. A huge tornado may blow them down at any time, and a large number of building fragments will be swept into the wind. Meanwhile, don't hide in the car. According to statistics, 7% of the victims in the tornado were killed by the tornado in the car. For example, this tornado disaster in the central United States, a car was twisted by a tornado, which could blow the car to tens of meters high. Once you fall, the chance of survival is very small.

At the same time, don't let your guard down even if you are dozens of kilometers away from a tornado. You know, the direction of a tornado is unpredictable. They may change their direction, speed and width every second, and their moving speed can reach 100 km per hour. Even if the tornado dissipates, don't leave the safe area, because a big tornado may be accompanied by several small tornadoes, and these small tornadoes can also kill you. Fortunately, tornadoes exist for a short time, usually a few minutes, and the longest is no more than a few hours.