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प्रश्न
What is the difference between seismic focus and epicenter?
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उत्तर
| Seismic Focus | Epicenter |
| The point inside the Earth where the earthquake originates and where the seismic waves are first generated. | The point on the Earth’s surface directly above the seismic focus. |
| Also called the hypocentre. | Located at the surface above the focus. |
| Located beneath the surface, often at a depth of 8 to 35 km. | Lies on the Earth’s surface, directly above the seismic focus. |
| Seismic waves radiate outward from this point. | Earthquake tremors are often felt most strongly near the epicentre. |
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संबंधित प्रश्न
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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. |
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Earthquakes occur in the Mid-Atlantic belt.
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A volcanic eruption is one of the main causes of earthquakes.
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An instrument used for recording all the earth tremors and earthquakes.
Give reasons for the following:
Internal processes are different from external processes.
Choose the odd one
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An earthquake of magnitude ______ scale can cause damage from things falling.
What is the point of the earth’s surface directly above the focus called?
