An elastic wave generated by an impulse such as an earthquake or an explosion is called ______.

seismic wave

The correct answer is option 3. seismic wave.

An elastic wave generated by an impulse such as an earthquake or an explosion is called Seismic wave.

Seismic waves are waves of energy that travel through the Earth's layers, and they are typically generated by sudden movements of the Earth's crust, such as earthquakes or volcanic eruptions. Seismic waves include various types, such as P-waves (primary waves), S-waves (secondary waves), and surface waves, each with distinct properties and behaviors as they propagate through the Earth.