The instrument which records waves on the surface of the earth produced by tremors is called?
Pictograph
Octograph
Seismograph
None of these
Seismograph is the instrument which records waves on the surface of the earth produced by tremors.
The instrument which records waves on the surface of the earth produced by tremors is called ___ .
What are the waves produced by tremors on the surface of the earth called? Which instrument is used to record them?
Seismograph is an instrument that records the :