Question

What was Mohorovičić's observation?(1 point)
Responses

Seismic waves penetrated all Earth's layers.
Seismic waves penetrated all Earth's layers.

Seismic waves travelled at constant speeds.
Seismic waves travelled at constant speeds.

Seismic waves could not go through the brittle crust.
Seismic waves could not go through the brittle crust.

Seismic waves travelled at varying speeds.
Seismic waves travelled at varying speeds.

Answer 1

The correct observation of Mohorovičić was that seismic waves could not go through the brittle crust.