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प्रश्न
Define Earthquake.
उत्तर
A sudden movement of a portion of the earth’s crust which produces a shaking or trembling is known as an earthquake.
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संबंधित प्रश्न
Give geographical reason.
Buildings collapsed at the foothills of the Himalayas because of an earthquake. Before collapsing they were moving forward and backward.
Identify and name the internal movement.
Molten magma is thrown out of the earth’s mantle.
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:
___________ are the first earthquake waves to be recorded on a seismograph of an earthquake.
Fill in the blank:
About 70 percent of the earthquakes occur in the _________________ Belt.
Describe how earthquakes are caused on the surface of the earth.
Explain the three types of earthquake waves.
Is it possible to predict an earthquake? Give reasons to support your answer.
Name the instrument used to record Earthquakes.
Name some Earthquakes which caused great damage.
What was the cause of the Koyna earthquake in India?
Describe the main type of Earthquake Waves.
Name three causes of Earthquakes.
Give two major causes of earthquakes.
Give one word for the following :
An instrument used for recording all the earth tremors and earthquakes.
The magnitude of an earthquake is measured by ______.
Choose the odd one
On an outline map of the world, mark the Pacific Ring of Fire
