Q. Consider the following statements:
1.Earthquakes occur due to the gravitational pull of the moon and stars on the Earth’s surface.
2.Nearly 59% of the land mass of India is prone to earthquakes.
3.When energy is released at the focus, seismic waves travel inward from that point in all directions.
Which of the statements given above is/are correct?
Statements 1 and 3 are incorrect. An earthquake is caused by tremors due to the movement of the tectonic plates inside the earth. An earthquake originates from ‘focus’, a place inside Earth’s crust. The nearest place on the surface from a focus is called ‘epicentre’. When energy is released at the focus, seismic waves travel outward from that point in all directions.
Statement 2 is correct. According to the government of India, a total of nearly 59% of the land mass of India (covering all states of India) is prone to earthquakes of different intensities.