GEOLOGY

Detailed explanation-1: -Tectonic plates sometimes cause earthquakes, but they can’t cause tsunamis.

Detailed explanation-2: -Tsunami Waves A tsunami is a large wave that is caused by the violent movement of the seafloor. This is most often caused by the movement of tectonic plates (especially subduction) or an earthquake, but can also happen due to events such as landslides or volcanoes.

Detailed explanation-3: -At the “seams” where tectonic plates come in contact, the crustal rocks may grind violently against each other, causing earthquakes and volcano eruptions. The relatively fast movement of the tectonic plates under California explains the frequent earthquakes that occur there.

Detailed explanation-4: -Volcanic activity caused by hotspots is not the result of plate tectonics.