Identify whether the given statements about an earthquake are correct or incorrect.

Statement 1: When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through Earth's crust and causes the shaking that we feel.

Statement 2: An earthquake cannot be identified as a foreshock until after a larger earthquake in the same area occurs.

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  1. Both Statements 1 and 2 are incorrect
  2. Only Statement 1 is correct
  3. Only Statement 2 is correct
  4. Both Statements 1 and 2 are correct

Answer (Detailed Solution Below)

Option 4 : Both Statements 1 and 2 are correct
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SSC CPO : English Comprehension Sectional Test 1
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The correct answer is Both Statements 1 and 2 are correct.

Key Points

  •  The Earthquake occurs when movement of plates generates stress which overcomes the friction. The release of energy causes shaking of earth known as Earthquake. 
  • The Foreshock is an earthquake that comes before the larger seismic event, known as the Mainshock.
  • The smaller earthquakes which comes after the Mainshock are called Aftershocks.
  • Foreshocks helps in understanding the stress in the Earth's crust and can provide insights for the larger mainshock.
  • The Mainshock is the most significant earthquake in a sequence that release the majority stress

Additional Information 

  • Earthquake releases two types of waves: Body waves and Surface Waves.
  • Body waves are Classified as P-waves and S-waves. S-waves are more harmful.
  • Surface waves are classified as Love waves and Rayleigh waves.
  • The point where earthquake arises is known as Focus or Hypocentre.
  • The vertical point of Focus on the surface of Earth is called Epicentre.
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