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Earthquake: Causes and Types of Waves Video Lecture | Geography Class 11 - Humanities/Arts

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FAQs on Earthquake: Causes and Types of Waves Video Lecture - Geography Class 11 - Humanities/Arts

1. What causes an earthquake?
Ans. Earthquakes are caused by the sudden release of energy in the Earth's crust. This energy is usually generated by the movement of tectonic plates, which are large sections of the Earth's lithosphere that float on the semi-fluid asthenosphere below.
2. What are the different types of waves produced during an earthquake?
Ans. There are primarily three types of waves generated during an earthquake: primary waves (P-waves), secondary waves (S-waves), and surface waves. P-waves are the fastest and can travel through solids, liquids, and gases, while S-waves are slower and only travel through solids. Surface waves are the slowest and cause most of the damage.
3. How do primary waves (P-waves) differ from secondary waves (S-waves)?
Ans. P-waves are compressional waves, meaning they cause particles to move in the same direction as the wave is traveling. In contrast, S-waves are transverse waves, causing particles to move perpendicular to the direction of the wave. This difference in motion allows P-waves to travel through solids, liquids, and gases, while S-waves can only travel through solids.
4. What are the characteristics of surface waves?
Ans. Surface waves are the slowest seismic waves and have the most significant impact on buildings and structures. They cause the ground to move in a rolling or swaying motion, similar to ocean waves. Surface waves can have both horizontal and vertical components, leading to intense shaking and significant damage to structures.
5. How do earthquakes impact humanities and the arts?
Ans. Earthquakes can have both immediate and long-term impacts on humanities and the arts. In the immediate aftermath, earthquakes can cause loss of life, displacement of individuals, and destruction of cultural heritage sites. This can result in the loss of artistic and historical artifacts, impacting cultural identity and artistic expression. Additionally, earthquakes may inspire artistic responses, serving as a catalyst for creative expressions and narratives that explore themes of resilience, loss, and recovery.
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