What is Richter scale?
Destructive energy of an earthquake is measured on the Richter scale. The earthquake measuring 7 or more on Richter scale can cause severe damage to life and property.
What is fault zones ?
Earthquakes tend to occur at the boundaries of earth’s plates. These boundaries are known as fault zones.
Protection against Earthquakes
Protection against EarthquakesWe know from the earlier pages that earthquakes cannot be predicted. We have also seen that they can be highly destructive. It is, therefore, important that we take necessary precautions to protect ourselves all the time. People living in seismic zones, where the earthquakes are more likely to occur, have to be specially …
What is seismic waves ?
The tremors produce waves on the surface of the earth. These are called seismic waves. The waves are recorded by an instrument called theseismograph . The instrument is simply a vibrating rod, or a pendulum, which starts vibrating when tremors occur. A pen is attached tothe vibrating system. The pen records the seismic waves on …
What is Richter scale ?
The power of an earthquake is expressed in terms of a magnitude on a scale called the Richter scale.Really destructive earthquakes have magnitudes higher than 7 on the Richter scale. Both Bhuj and Kashmir earthquakes had magnitudes greater than 7.5.
Seismic or fault zones
Since earthquakes are caused by the movement of plates, the boundaries of the plates are the weak zones where earthquakes are more likely to occur. The weak zones are also known as seismic or fault zones. In India, the areas most threatened are Kashmir, Western and Central Himalayas, the whole of North-East, Rann of Kutch, …
What is an Earthquake?
An earthquake is a sudden shaking or trembling of the earth which lasts for a very short time. It is caused by a disturbance deep inside the earth’s crust. Earthquakes occur all the time, all over the earth. They are not even noticed. Major earthquakes are much less frequent. They can cause immense damage to …
Earthquakes
EarthquakesThese natural phenomena can cause large scale destruction of human life and property. Fortunately, these phenomena can be predicted to someextent. The weather department can warn about a thunderstorm developing in some area. If a thunderstorm occurs there is always a possibility of lightning and cyclones accompanying it. So, we get time to take measures …
What are the uses of Lightning Conductors ?
Lightning ConductorsLightning Conductor is a device used to protect buildings from the effect of lightning. A metallic rod, taller than the building, is installed in the walls of the building during its construction. One end of the rod is kept out in the air and the other is buried deep in the ground . The …
Do’s and Don’ts during a Thunderstorm
Do’s and Don’ts during a ThunderstormOutsideOpen vehicles, like motorbikes, tractors, construction machinery, open cars are not safe. Open fields, tall trees, shelters in parks, elevated places do not protect us from lightning strokes. Carrying an umbrella is not at all a good idea during thunderstorms. If in a forest, take shelter undershorter trees. If no …