Answer:
3. earthquakes
Explanation:
Earthquakes are episodes of release of mechanical energy accumulated in the tectonic plates through plastic deformation, causing sudden tremors on the Earth's surface. Most earthquakes are caused by underground shocks of rock plates (tectonic plates), other reasons may be the large displacement of gases, volcanic activities and anthropic action (explosions, dam ruptures, mining, underground fluid extraction, etc.). However, the earthquakes caused by the movement of tectonic plates are the most intense and most far-reaching.
Earthquakes are formed from strong displacements of giant plates underground. When this occurs, the energy that was accumulated at the site is released in the form of elastic surface waves. They spread in all directions, making the earth tremble.
