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प्रश्न
The magnitude of an earthquake is measured by ______.
विकल्प
Seismograph
Richter scale
Ammeter
Rotameter
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उत्तर
The magnitude of an earthquake is measured by Richter scale.
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संबंधित प्रश्न
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.
What is called an earthquake?
Name two man-made causes of an earthquake.
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.
What is the difference between seismic focus and epicenter?
Name the important Earthquake-belts of the world.
OR
Indicate two major belts of Earthquakes.
Name some Earthquakes which caused great damage.
Earthquakes occur in the Mid-Atlantic belt.
Why are earthquakes related to volcanoes?
Give reasons for the following:
Internal processes are different from external processes.
The earthquake waves are recorded by an instrument known as ______.
Seismology is the study of ______.
On an outline map of the world, mark the Pacific Ring of Fire
What is the point of the earth’s surface directly above the focus called?
