Earthquake
San Francisco: Earth trembled due to earthquake in some parts of San Francisco Bay area. The intensity of the earthquake has been measured at 3.7 on the Richter scale. People said that they felt an earthquake. Although the intensity of the earthquake was less. At present there is no immediate information of any injury or any major damage to property.
The United States Geological Survey said the quake was detected at 7:02 a.m. Friday at a depth of 12 miles (19 kilometers) about 3 miles (4.8 kilometers) northwest of San Francisco. People said that they felt a strong shock and woke up.
Why do earthquakes occur?
It is natural to raise the question that why do earthquakes occur? Actually, the thick layer of the earth, which is called tectonic plates, keeps slipping from its place. These plates usually shift from their place by about 4-5 mm every year. They can move from their place both horizontally and vertically. In this sequence, sometimes one plate moves closer to the other plate and sometimes it moves away. During this time sometimes these plates collide with each other. Only in such circumstances an earthquake occurs and the earth shakes. These plates are about 30-50 km below the surface.
How to protect?
Buildings collapse due to strong earthquakes. If there is a sudden earthquake, go out of the house in the open. If you are trapped in the house, hide under a bed or a sturdy table. You can save yourself even by standing in the corners of the house. Do not use the lift at all during an earthquake. Go to open spaces, stay away from trees and power lines. Apart from this, earthquake resistant houses are also equally important. Although it is not very expensive, but due to lack of awareness among people about it, people often ignore it.
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