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प्रश्न
Describe how earthquakes are caused on the surface of the earth.
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उत्तर
Earthquakes are caused by the sudden release of energy stored in the Earth’s crust due to stress and strain. When the crust is unable to accommodate the stress, it results in a sudden release of energy in the form of shock waves, causing an earthquake. These shocks can occur due to several factors, such as the movement of tectonic plates and volcanic eruptions, and isostatic imbalances caused by diastrophism, which leads to the formation of faults or folds and creates upheavals and depressions on the Earth’s surface.
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संबंधित प्रश्न
For the formation of a rift valley, which of the following processes should occur in the earth’s crust?
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.
Give reasons why an earthquake occurs.
Fill in the blank:
___________ are the first earthquake waves to be recorded on a seismograph of an earthquake.
How are earthquakes useful?
What is the difference between seismic focus and epicenter?
Is it possible to predict an earthquake? Give reasons to support your answer.
What is an Earthquake?
Describe the world’s distribution of earthquakes.
Name some Earthquakes which caused great damage.
Earthquakes occur in the Mid-Atlantic belt.
What was the cause of the Koyna earthquake in India?
Give one word for the following :
The surface position immediately above the origin of an earthquake.
Give reasons for the following:
Folding and faulting frequently go together.
What is Seismograph?
How the earthquake can be recorded?
What is the point of the earth’s surface directly above the focus called?
