Question

What causes tsunami? Do all geological displacements cause tsunami?

a) Volcanic eruptions; Yes, all do
b) Earthquakes or underwater landslides; No, only specific ones
c) Magnetic shifts; Yes, but rarely
d) Meteorite impacts; Yes, always

Answer 1

Tsunamis are primarily caused by underwater earthquakes or underwater landslides, generating powerful waves that can cause significant destruction along coastal regions.

Step-by-step explanation:

A tsunami is a series of sea waves caused by an underwater earthquake, land-slide, or volcanic eruption. When the ocean is deep, tsunamis may be less than 30 cm high on the ocean's surface and can travel at speeds up to 700 km/hr. In shallow water near the coast, it slows down. The top of the wave moves faster than the bottom, causing the sea to rise dramatically, as much as 30 m. The wavelength can be as long as 100 km and the period as long as an hour.

Tsunamis are primarily caused by underwater earthquakes or underwater landslides. These geological displacements generate powerful waves that can travel long distances and cause significant destruction along coastal regions.