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प्रश्न
Give two major causes of earthquakes.
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उत्तर
Two major causes of earthquakes are faulting associated with tectonic forces and the movements due to volcanic eruptions.
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.
Fill in the blank:
___________ are the first earthquake waves to be recorded on a seismograph of an earthquake.
What is known as the Richter scale?
Match the Columns.
| Column A | Column B |
| 1. Tsunami | (a) The waves that make the inhabitants feel the ground motion. |
| 2. Seismograph | (b) The instrument for measuring the intensity of earthquakes. |
| 3. S-waves | (c) Harbour waves generated by oceanic earthquakes. |
| 4. Richter scale | (d) The point on the earth surface directly above the seismic focus. |
| 5. Epicentre | (e) An instrument for recording the movement of earthquake waves. |
Describe how earthquakes are caused on the surface of the earth.
Explain the three types of earthquake waves.
What is an Earthquake?
Name the important Earthquake-belts of the world.
OR
Indicate two major belts of Earthquakes.
Why are earthquakes related to volcanoes?
Name three causes of Earthquakes.
Give one word for the following :
The surface position immediately above the origin of an earthquake.
The earthquake waves are recorded by an instrument known as ______.
What is Seismograph?
How the earthquake can be recorded?
An earthquake of magnitude ______ scale can cause damage from things falling.
