Thunder is a natural phenomenon in which clouds with different electricity in the sky, when close to each other, produce a large-scale discharge phenomenon.
When clouds are discharged, sparks and sounds occur, sparks are lightning, and the sound produced is thunder.
The thunder produced inside the cloud and between the cloud body is a high-altitude mine; the thunder generated in the cloud-ground lightning is a "land-to-ground mine".
Ray's voice was loud and we could hear it clearly.
The huge current formed by the thunder, the hot high temperature and electromagnetic radiation, and the accompanying shock wave have a great destructive force, which is enough to cause human casualties and damage to buildings.
In daily life, we must do a good job of lightning protection measures, such as the installation of wires must meet the requirements.
In the event of lightning, keep the room dry away from metal objects that are easily conductive.
The damage of lightning to the human body has the direct effect of current and the effect of overpressure or power, as well as the effect of high temperature.
When thundering, they should stay indoors and close their doors and windows; outdoor workers should hide indoors as soon as possible.
When thunder and rain, it is strictly forbidden to stay at the top of the mountain or in the high hill, and it is even more important to avoid continuing to pedal to a high place to enjoy the rain.
When thundering, do not hide under large trees, near telephone poles, do not walk or stand in open fields, and should hide in low-lying places as soon as possible, or find rooms or dry caves as much as possible.
In thunderstorms, do not go to rivers, rivers, lakes for swimming, boating, fishing, etc. Reduce the use of telephones and mobile phones.
Thunder is a natural phenomenon, we know it, grasp its laws and hazards, learn to protect ourselves in thunderstorms, reduce outdoor activities. In daily life, rational use of electrical appliances. Through the study of Lei's knowledge, guide teenagers to understand nature, understand nature, learn to be independent, and pay attention to safety.