GEOLOGY

Detailed explanation-1: -Usually, it takes an earthquake with a Richter magnitude exceeding 7.5 to produce a destructive tsunami. Most tsunamis are generated by shallow, great earthquakes at subductions zones.

Detailed explanation-2: -No, all earthquakes do not cause tsunamis. There are four conditions necessary for an earthquake to cause a tsunami: The earthquake must occur beneath the ocean or cause material to slide in the ocean. The earthquake must be strong, at least magnitude 6.5.

Detailed explanation-3: -Lightning is a sudden electrostatic discharge that can be seen in the sky, and it doesn’t generate any vibrations on the surface of the Earth or in the ocean, so it doesn’t cause a tsunami.

Detailed explanation-4: -A tsunami is a series of enormous waves created by an underwater disturbance usually associated with earthquakes occurring below or near the ocean. Volcanic eruptions, submarine landslides, and coastal rock falls can also generate a tsunami, as can a large asteroid impacting the ocean.