Multiple choice

Consider the following statements regarding earthquakes:

  1. In earthquakes, shocks are generated at a point known as the epicentre
  2. The point of origin of shock may be within the crust or mantle
  3. The more earthquake-prone areas are the margin of tectonic plates Which of the above statements are correct?

  1. 1, 2 and 3

  2. 1 and 2

  3. 1 and 3

  4. 2 and 3
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement 1 is incorrect because earthquake shocks originate at the focus (hypocenter) deep underground, not at the epicentre which is merely the surface point directly above the focus. Statement 2 is correct as earthquake foci can occur in either the crust or mantle depending on tectonic setting. Statement 3 is correct as plate margins (especially convergent and transform boundaries) are the most seismically active zones due to constant tectonic stress accumulation and release.

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