What was Mohorovičić's observation?(1 point)

Question

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

Seismic waves could not go through the brittle crust.

Answer 1

The correct response is:

Seismic waves travelled at varying speeds.

Mohorovičić observed that seismic waves travel at different speeds depending on the material they pass through, which helped in understanding the structure of the Earth's interior.