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प्रश्न
For the formation of a rift valley, which of the following processes should occur in the earth’s crust?
पर्याय
Compression
Tension
Weathering
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उत्तर
Tension
Explanation:
When the energy waves within the earth’s mantle move away from each other, they create tension on the layers of rock surrounding the waves leading to fractures in the earth’s crust. Sometimes, two fractures can occur parallel to each other and the crust between these fractures subside forming the rift valley.
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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:
Most earthquakes occur on account of the strain in the _________.
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.
Explain the three types of earthquake waves.
How are earthquakes distributed over the globe?
Name three causes of Earthquakes.
What is Seismograph?
On an outline map of the world, mark the Pacific Ring of Fire
