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प्रश्न
Name two man-made causes of an earthquake.
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उत्तर
- Construction of huge dams: The weight of large reservoirs can trigger earthquakes in seismically active zones.
- Mining and blasting of rocks: Explosions and excavation near fault lines can induce earthquakes.
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संबंधित प्रश्न
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.
Give reasons why an earthquake occurs.
Fill in the blank:
The last of the earthquake waves to arrive on the surface of the earth are ___________ waves.
Fill in the blank:
The giant sea waves caused by earthquakes in the oceans are called ___________.
Fill in the blank:
About 70 percent of the earthquakes occur in the _________________ Belt.
What is called an earthquake?
State two natural causes of an earthquake.
What is known as the Richter scale?
How are earthquakes useful?
What is the difference between seismic focus and epicenter?
How an earthquake is caused?
Answer the following:
A volcanic eruption is one of the main causes of earthquakes.
Give one word for the following :
The surface position immediately above the origin of an earthquake.
Give reasons for the following:
Internal processes are different from external processes.
Give reasons for the following:
Folding and faulting frequently go together.
Define Earthquake.
The earthquake is measured by the ______ scale.
How the earthquake can be recorded?
Give a note on Tsunami 2004.
