P waves, S waves, and L waves are produced by
earthquakes
the earth’s inner core
the earth’s mantle
the asthenosphere
@AlexandervonHumboldt2

Question

P waves, S waves, and L waves are produced by
 earthquakes
 the earth’s inner core
 the earth’s mantle
 the asthenosphere
@AlexandervonHumboldt2

alexandervonhumboldt2 · Answer

Seismic waves are waves of energy that travel through the Earth's layers, and are a result of an earthquake, explosion, or a volcano that gives out low-frequency acoustic energy. Many other natural and anthropogenic sources create low amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seismologists. Seismic wave fields are recorded by a seismometer, hydrophone (in water), or accelerometer.

anonymous · Answer

so what is it?