The content of the handwritten report on earthquake prevention and disaster reduction is Dingdang: 1. In case of earthquake, take shelter first, find a gap under the table, bend down against the corner, seize the opportunity to escape and stay away from all buildings. Aftershocks crouched in the open space. When there is a fire, you are afraid of smoke. Cover your nose with a wet towel, roll on the ground on fire, run down without taking the elevator, slide along the rope on the balcony, and jump off the building blindly will hurt your health.

Earthquake is a natural phenomenon that the earth's crust vibrates in the process of rapidly releasing energy, and seismic waves will be generated in this process. On the earth, plates collide with each other, resulting in dislocation and rupture at the edge and inside of plates, which is the main reason for earthquakes. The place where the earthquake started is called the source, and the ground directly above the source is called the epicenter. The strongest ground motion of a destructive earthquake is called the extreme earthquake zone, which is often the area where the epicenter is located. Earthquakes often cause serious casualties, which can cause fires, floods, toxic gas leakage, the spread of bacteria and radioactive substances, and may also cause secondary disasters such as tsunami, landslides, collapses and ground fissures. Earthquake is a very common and common natural phenomenon. However, due to the complexity of the crustal structure and the non-intuition of the focal region, there is still no satisfactory answer to how earthquakes, especially tectonic earthquakes, are bred and occurred, and what are their causes and mechanisms. But at present, it is recognized by scientists that tectonic earthquakes are caused by crustal plate movements. Because the earth's rotation and revolution are endless, and its internal materials are constantly differentiated, the crust around the earth's surface, or lithosphere, is also constantly generated, evolved and moved, which has contributed to the global crustal tectonic movement. Scientists have experienced long-term observation, description and analysis of crustal structure and land-sea changes, and have successively formed different hypotheses, ideas and theories. The theory of plate tectonics, also known as new global tectonics, was formed in the late 1960s and has been accepted by geoscientists.

Please remember the jingle in case of an earthquake. In case of earthquake, take shelter first, find a gap under the table, lean against the corner, bend down, seize the opportunity to escape, stay away from all buildings, and the aftershocks crouch in the open space.