EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Moho? I don’t know???
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An area along a fault which has surpassed its usual interval between any earthquake activity.
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A measure of the amount of energy released by an earthquake, which is derived from the amount of displacement that occurs along the fault zone, and is more precise than the Richter scale.
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The boundary separating the crust from the mantle, discernible by an increase in the velocity of seismic waves.
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Detailed explanation-1: -Andrija Mohorovicic (1857-1936) was a pioneer of the developing science of seismology in the early twentieth century, whose close observations of seismic waves gave us the concept of the Earth’s mantle. The Mohorovicic Discontinuity, named in his honor, is the boundary between the Earth’s crust and the mantle.
Detailed explanation-2: -The Moho discontinuity is the boundary between the Earth’s crust and the mantle. It has been named so because it was discovered by a Croatian scientist, Andreaja Mohorovicic. This boundary marks a change in seismic-wave velocity from the crust to the uppermost mantle within the (lithospheric) plate.
Detailed explanation-3: -Moho, or Mohorovičić discontinuity, boundary between the Earth’s crust and its mantle. The Moho lies at a depth of about 22 mi (35 km) below continents and about 4.5 mi (7 km) beneath the oceanic crust.
Detailed explanation-4: -The Mohorovičić discontinuity was first identified in 1909 by Mohorovičić, when he observed that seismograms from shallow-focus earthquakes had two sets of P-waves and S-waves, one set that followed a direct path near the Earth’s surface and the other refracted by a high-velocity medium.
Detailed explanation-5: -In 1909, Andrija Mohorovičić, a Croatian seismologist, discovered the boundary between the crust and the mantle by observing the sudden increase of seismic waves as they passed from the crust to the mantle.