with a machine
As a result of its viberation
the sound wave
Sound is vibration that propagates to be a audible mechanical wave. It uses pressure and displacement, through air or water to be sensed whether by hearing or feeling.
it creates a earthquake!
The first shock wave of an earthquake is known as the P-wave or primary wave. It is the fastest seismic wave and can travel through both solid and liquid materials. P-waves are responsible for the initial jolt felt during an earthquake.
A tidal wave is caused by an earthquake.
The Secondary or S-wave.
A mechanical wave.
The P wave
An earthquake.
It can be either.
I'm pretty sure that an earthquake gives off a seismic wave and that seismic wave is then written on a seismograph that tells how strong it was and what kind of wave it was. with that knowledge a scientist can estimate how far away the earthquake was when it started and where it was