What is the Mohorovičić discontinuity?(1 point)
Responses
1 the refraction of seismic waves
2 the boundary between the crust and the mantle
3 the measurement of the speed of seismic waves
4 the line where Earth's layers go from solid to liquid
2 the boundary between the crust and the mantle
2) The Mohorovičić discontinuity is the boundary between the crust and the mantle.
The correct answer is option 2: the boundary between the crust and the mantle.
The Mohorovičić discontinuity, also known as the Moho, is a prominent boundary within the Earth's interior. It separates the Earth's crust, which is the outermost layer of the planet, from the underlying mantle. The Moho is named after Andrija Mohorovičić, a Croatian seismologist who discovered this boundary in 1909.
To determine the nature and location of the Mohorovičić discontinuity, scientists use seismic waves. Seismic waves are energy waves produced by earthquakes or human-made explosions. When seismic waves pass through Earth, they can be refracted or bent, providing valuable information about the layers of the planet.
Specifically, scientists analyze how seismic waves move and change speed as they pass through different materials. By studying the behavior of seismic waves, they can identify the boundary where the crust transitions to the mantle, revealing the Moho discontinuity.
Therefore, option 2, "the boundary between the crust and the mantle," is the correct answer.