Question

11. A low-frequency infrasonic
sound is produced before the
main shockwaves during what​

Answer 1

Answer:

Earthquake

Earthquake is basically the sudden movement of tectonic plates of earth which causes tremor of earth crust and it produces infrasound before the main shock wave begins during this process there is a sudden release of seismic waves that makes the ground shake and these seismic waves are classed as infrasound waves.

Answer 2

intro please bro or sis...