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प्रश्न
What are known as seismic focus and epicenter with respect to an earthquake?
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उत्तर
The point of origin of earthquake waves is called the seismic focus, and the center vertically above the seismic focus nearest to the earth’s crust is called the epicenter.
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संबंधित प्रश्न
Give a geographical reason.
Buildings collapsed at the foothills of the Himalayas because of an earthquake. Before collapsing, they were moving forward and backward.
Arrange the following statements in chronological order in which an earthquake occurs.
- The earth’s surface vibrates.
- The plates suddenly move.
- Due to the movements in the mantle, compression goes on increasing.
- Along the weak points ( faultlines) rocks break apart.
- Stored energy is released in the form of seismic waves.
Fill in the blank:
Most earthquakes occur on account of the strain in the _________.
Fill in the blank:
The last of the earthquake waves to arrive on the surface of the earth are ___________ waves.
What is an Earthquake?
How an earthquake is caused?
What was the cause of the Koyna earthquake in India?
Name the causes of earthquakes.
Name three causes of Earthquakes.
Give one word for the following :
An instrument used for recording all the earth tremors and earthquakes.
Give reasons for the following:
Internal processes are different from external processes.
The earthquake waves are recorded by an instrument known as ______.
Seismology is the study of ______.
Define Earthquake.
The earthquake is measured by the ______ scale.
The earthquake is a ______ activity.
Name the point where the vibrations originate in an earthquake.
What is the point of the earth’s surface directly above the focus called?
