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Earthquakes Video Lecture - Geography for UPSC CSE
FAQs on Earthquakes Video Lecture - Geography for UPSC CSE
| 1. What causes earthquakes? |  |
Ans. Earthquakes are caused by the sudden release of energy in the Earth's crust. This release of energy occurs when the Earth's tectonic plates, which are constantly in motion, suddenly slip or collide with each other. The stress and pressure built up along the plate boundaries are eventually released in the form of seismic waves, causing an earthquake.
| 2. How is the magnitude of an earthquake measured? | |
Ans. The magnitude of an earthquake is measured using the Richter scale or the moment magnitude scale (Mw). The Richter scale measures the amplitude of seismic waves recorded by seismographs, while the moment magnitude scale measures the total energy released by an earthquake. Both scales provide a quantitative measure of the earthquake's strength, with higher numbers indicating a larger magnitude.
| 3. Can earthquakes be predicted? | |
Ans. Currently, it is not possible to accurately predict when and where an earthquake will occur. While scientists can monitor seismic activity and identify areas prone to earthquakes, predicting the exact timing and magnitude of an earthquake remains a significant challenge. However, advancements in seismology and geophysics continue to improve our understanding of earthquake processes, which may eventually lead to better prediction capabilities.
| 4. What are the primary effects of an earthquake? | |
Ans. The primary effects of an earthquake include ground shaking, surface rupture, and the displacement of rocks and soil. Ground shaking can cause buildings, bridges, and other structures to collapse, leading to casualties and property damage. Surface rupture occurs when the Earth's crust breaks along the fault line, causing visible cracks and displacements. Additionally, earthquakes may trigger secondary effects such as landslides, tsunamis, and even volcanic activity in some cases.
| 5. How can individuals prepare for an earthquake? | |
Ans. Individuals can take several steps to prepare for an earthquake and minimize its potential impact. It is essential to create an emergency plan that includes identifying safe spots at home or work, establishing communication methods with family members, and preparing an emergency kit with essentials like food, water, and first aid supplies. Additionally, securing heavy objects, reinforcing buildings, and educating oneself on proper earthquake response actions (such as "Drop, Cover, and Hold On") can significantly improve personal safety during an earthquake.
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Mar 13, 2026 Last updated
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