Which of the following statements is not correct regarding earthquakes?a)Shallow earthquakes are more devastating than deep earthquakes.b)Deeper earthquakes spread over a longer area than shallow earthquakes.c)Magnitude of an earthquake is measured in Mercalli scale.d)Earthquake of magnitude 6 will be ten times stronger than that of magnitude 5Correct answer is option 'C'. Can you explain this answer?

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Which of the following statements is not correct regarding earthquakes?

a)
Shallow earthquakes are more devastating than deep earthquakes.
b)
Deeper earthquakes spread over a longer area than shallow earthquakes.
c)
Magnitude of an earthquake is measured in Mercalli scale.
d)
Earthquake of magnitude 6 will be ten times stronger than that of magnitude 5

Correct answer is option 'C'. Can you explain this answer?

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Which of the following statements is not correct regarding earthquakes...

Turkey (Turkiye) and Syria experienced a series of powerful earthquakes recently, with the first one, a quake of magnitude 7.8, being described as the strongest the country has experienced in over a century.
The region where the earthquake struck lies along a well known seismic fault line called the Anatolia tectonic block that runs through northern, central, and eastern Turkey. It is a seismically active zone — though not as active as, say, the Himalayan region which is one of the most dangerous regions in the world from the perspective of earthquakes.
The seismicity in this region is a result of interactions between the African, Eurasian, and Arabian plates. The Arabian plate is known to be pushing northward, which results in a slight westward movement for the Anatolian plate, where Turkey is located.
The earthquakes emerged from relatively shallow depths which made them devastating. The first earthquake, of magnitude 7.8, originated 17.9 km below the Earth’s surface. All the subsequent ones, including the one of 7.5 magnitude, emerged from even closer to the surface. Shallow earthquakes are generally more devastating because they carry greater energy when they emerge on the surface.
Deeper earthquakes lose much of their energy by the time they come to the surface. The deeper quakes spread farther though — the seismic waves move conically upwards to the surface — even as they lose energy while travelling greater distances, and hence cause less damage.
Earthquake magnitude is a measure of the “size,” or amplitude, of the seismic waves generated by an earthquake source and recorded by seismographs. In 1935, the American seismologist Charles F. Richter set up a magnitude scale of earthquakes as the logarithm to base 10 of the maximum seismic wave amplitude (in thousandths of a millimetre) recorded on a standard seismograph (the Wood-Anderson torsion pendulum seismograph) at a distance of 100 km (60 miles) from the earthquake epicentre. So, seismic waves produced by a magnitude 6 earthquake have 10 times higher amplitude than the ones produced by a magnitude 5 earthquake. Hence, option (c) is the correct answer.

Answered by Notes Wala · View profile

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Which of the following statements is not correct regarding earthquakes?a)Shallow earthquakes are more devastating than deep earthquakes.b)Deeper earthquakes spread over a longer area than shallow earthquakes.c)Magnitude of an earthquake is measured in Mercalli scale.d)Earthquake of magnitude 6 will be ten times stronger than that of magnitude 5Correct answer is option 'C'. Can you explain this answer?

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