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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
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.
What is called an earthquake?
Describe how earthquakes are caused on the surface of the earth.
Is it possible to predict an earthquake? Give reasons to support your answer.
How is the intensity of an earthquake measured?
How an earthquake is caused?
Name the important Earthquake-belts of the world.
OR
Indicate two major belts of Earthquakes.
What was the cause of the Koyna earthquake in India?
Describe the main type of Earthquake Waves.
Answer the following:
A volcanic eruption is one of the main 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:
Folding and faulting frequently go together.
The earthquake waves are recorded by an instrument known as ______.
Choose the odd one
An earthquake of magnitude ______ scale can cause damage from things falling.
In India, the Himalayan region and the ______ valley are prone to earthquakes.
Choose the odd one.
focus, epicenter, vent, seismic waves
