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प्रश्न
Write the causes of the following:
Earthquakes
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उत्तर
Earthquakes can occur due to the following reasons:
- Volcanic eruptions – These are caused by sudden eruptions and the movement of magma beneath the Earth’s crust.
- Meteors falling on the Earth’s surface – These are rare events, but the impact of large meteors can cause earthquakes.
- Underground explosions (such as nuclear tests) – These are human-induced earthquakes, occurring due to explosions underground.
- Collapse of underground structures (like mines and tunnels) – These are caused by the sudden collapse of these structures, leading to small earthquakes.
- Mining and the construction of big dams – These are human activities that increase stress and pressure in rocks, leading to earthquakes.
संबंधित प्रश्न
What are the effects of earthquakes on the earth’s surface and human life?
Show the epicentre, focus and the primary, secondary and surface waves of an earthquake with the help of a neat labelled diagram.
Give scientific reasons.
Don't use lifts at the time of earthquakes.
Give scientific reasons.
The foundation of earthquake-proof building is separated from other land.
What is the Tsunami?
Compare and contrast the constructive effects and the – destructive effects of an earthquake.
Consider the following statement and choose the appropriate answer:
Assertion (A): A greater danger in an Earthquake is the falling of buildings.
Reason (R): Earthquake may cause changes in the earth’s surface
Which of the following is not likely to cause Tsunami?
Consider the list of terms given below:
- Tsunami
- Landslides
- Floods
- Lightning
Earthquakes can cause
State whether the following statement is True or False.
The process of electric discharge cannot occur between clouds and the earth.
