What was Mohorovičić's observation?(1 point)
Seismic waves could not go through the brittle crust.
Seismic waves travelled at constant speeds.
Seismic waves travelled at varying speeds.
Seismic waves penetrated all Earth's layer
Seismic waves could not go through the brittle crust.
Mohorovičić's observation was that seismic waves could not go through the brittle crust.
Mohorovičić's observation was that seismic waves could not go through the brittle crust.
To validate this observation, Mohorovičić studied seismic waves generated by earthquakes and observed that the waves encountered a boundary where their velocity suddenly increased. This boundary, named the Mohorovičić discontinuity or Moho, marks the boundary between the Earth's crust and the underlying mantle. Mohorovičić's observation led to the understanding that the Earth's interior is composed of distinct layers, with seismic waves behaving differently in each layer.