Question : Most of the devastating earthquakes are usually caused by
Option 1: Eustatic movement
Option 2: Isostatic movement
Option 3: Collision of earth plates
Option 4: Volcanic eruptions.
Correct Answer: Collision of earth plates
Solution : The correct answer is collision of earth plates.
Earthquakes literally means the shaking of earth. It is caused by the sudden release of energy at any point inside earth because of abrupt movement of tectonic plates. The worst earthquakes are usually caused because of the collision of tectonic plates. The point inside the earth where the earthquake begins is known as hypocenter and the point just above it on the earth's crust is known as epicenter. This sudden release of energy causes the seismic wave movements on the earth crust. Seismic waves are of two types- surface waves and body waves. Surface waves are the destructive waves, while body waves are of two types P waves and S waves.
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