Powerful waves generated in the ocean by seismic activity are known as Tsunamis. While the term “tidal wave” is often used incorrectly, tsunamis have nothing to do with the tides. They are purely the result of geological disturbances—primarily earthquakes—that transfer ...
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Most of the world’s earthquakes (about 63–68%) occur in the Circum-Pacific belt, famously known as the “Ring of Fire.” This belt encircles the Pacific Ocean and is characterized by a continuous series of oceanic trenches, volcanic arcs and plate boundaries, ...
Statement (B) is incorrect because the Richter scale is a mathematical formula (a scale), not a physical instrument. The instrument used to detect and record earthquakes is the seismograph. Additionally, the Richter scale measures magnitude (energy released), while intensity (damage/shaking) ...
Statement (D) is incorrect because isoseismic lines are almost always irregular. They connect points of equal earthquake intensity, which depends on local geology, soil type and building density. Since ground conditions and rock types vary significantly across a region, the ...
Long surface waves (L waves) cause the most damage during an earthquake. While Primary (P) waves are fast and Secondary (S) waves are strong, it is the surface waves that have the largest amplitude and longest duration. Their complex side-to-side ...