The earthquake is the natural disaster accompanied with tremors and fluctuations of the earth's surface. Earthquakes differ on the force and degree of destructive consequences, force of an earthquake is estimated on a 12-ball scale.
Instruction
1. The earthquake of one point of force is felt by nobody, but is registered rather precision seismic instruments. The earthquake of two points — is sometimes felt by people.
2. Some people living on the top floors can feel three-point earthquakes. In case of underground fluctuations of four points, it will be felt by already many, and especially - being in the room. At the same time ware can ring, jingle glasses, clap doors. At night people quite often wake up from such earthquake.
3. The earthquake measuring five points will be noticed practically by all; at night hardly someone will continue to sleep. Trailing objects are considerably shaken, whitewashing and plaster begins to be showered, in glasses of houses cracks appear.
4. Underground fluctuations, the valid six points, will feel everything. Plaster is showered, buildings sustain small damages.
5. At an earthquake in seven points of the building collapse already more considerably: from plaster separate pieces break away, walls burst. Sitting in the car, it is already possible to feel pushes.
6. At further strengthening of an earthquake (to force estimated at eight points), cracks in walls expand and become big, pipes, eaves, monuments fall. Cracks in the soil are observed.
7. If walls fall, roofs of houses fly, underground pipelines are broken off — the earthquake in nine points is so shown.
8. The strongest earthquake bearing catastrophic consequences is the earthquake ten-mark. Many buildings fall off, railway rails are bent. Cracks, collapses and landslides appear in soil.
9. The earthquake intensity in eleven points is fraught with very destructive consequences for a relief. The appearance of epicenter undergoes cardinal changes: in the earth, numerous wide cracks are formed, there are collapses in mountains, bridges collapse. To survive in such conditions it is unreal.
10. Twelve points - maximum, according to scientists, the magnitude which in principle the earthquake can have. At natural disaster of such scale significant changes in a relief, global destruction of buildings, deviations in the course of the rivers will be observed, and objects will be thrown in air.