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प्रश्न
What is known as the Richter scale?
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उत्तर
The Richter scale is a logarithmic scale used to measure the magnitude of earthquakes. It was developed by Charles F. Richter in 1935 and measures the energy released at the earthquake’s source.
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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?
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.
Fill in the blank:
The giant sea waves caused by earthquakes in the oceans are called ___________.
Name two man-made causes of an earthquake.
How are earthquakes useful?
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 an Earthquake?
How an earthquake is caused?
Describe the world’s distribution of earthquakes.
Earthquakes occur in the Mid-Atlantic belt.
What was the cause of the Koyna earthquake in India?
Give two major causes of earthquakes.
Give one word for the following :
An instrument used for recording all the earth tremors and 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 ______.
Define Earthquake.
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?
