An elastic wave generated by an impulse such as an earthquake or an explosion is called ______.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Seismic wave.
- Seismic waves are those waves of energy that travel through the earth's layers. It is a result of earthquakes, volcanic eruptions, magma movement, large landslides and large man-made explosions that give out low-frequency acoustic energy.
- Seismic waves are studied by geophysicists called seismologists and seismic wave fields are recorded by a seismometer, hydrophone or accelerometer.