SOLAR SYSTEM

UNIVERSE

PLANETARY INTERIORS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which two Earth layers are separated by the Moho boundary?
A
rigid mantle and plastic mantle
B
outer core and stiffer mantle
C
stiffer mantle and asthenosphere
D
crust and rigid mantle
Explanation: 

Detailed explanation-1: -Answers. The Moho boundary separates the the Earth’s mantle and Earth’s crust.

Detailed explanation-2: -The crust and mantle are separated by a curious break called the Moho (or Mohorovicic discontinuity), which was discovered by analysis of seismic waves. The Moho is much deeper under mountain ranges and continental crust than under oceanic crust.

Detailed explanation-3: -The Mohorovičié discontinuity is the boundary (also referred to as the M-discontinuity, or Moho) that separates the Earth’s crust from the subjacent mantle at depths of 30–50 km below the continents and 5–10 km below sea level in the oceans.

Detailed explanation-4: -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. Modern instruments have determined that the velocity of seismic waves increases rapidly at this boundary.

Detailed explanation-5: -Mohorovicic (Moho) discontinuity forms the boundary between the crust and the asthenosphere (upper reaches of the mantle) where there is a discontinuity in the seismic velocity. It occurs at an average depth of about 8 kilometres beneath the ocean basins and 30 kilometres beneath continental surfaces.

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