Correct Answer: tremor

Solution : The correct answer is tremor.

An earthquake also termed a tremor, manifests as a sudden land shake, typically caused by the abrupt movement or energy release of tectonic plates. The hypocenter is where energy is unleashed, and the corresponding point on the ground is the epicentre. Energy propagates through body and surface waves, specifically P waves and S waves. Earthquake intensity is measured using the Richter and Mercalli scales.