GEOLOGY

Detailed explanation-1: -As discussed in Lesson 5, earthquakes occur when elastic energy is accumulated slowly within the Earth’s crust as a result of plate motions and then released suddenly at fractures in the crust called faults. The released energy travels in the form of waves called seismic waves .

Detailed explanation-2: -An earthquake is the vibration, sometimes violent, of the Earth’s surface that follows a release of energy in the Earth’s crust.

Detailed explanation-3: -Earthquakes are usually caused when underground rock suddenly breaks and there is rapid motion along a fault. This sudden release of energy causes the seismic waves that make the ground shake.

Detailed explanation-4: -Strong vibrations on the surface of the Earth is called an earthquake.

Detailed explanation-5: -The primary effects of earthquakes are ground shaking, ground rupture, landslides, tsunamis, and liquefaction.