⚙️ how
How do tsunamis form after an undersea earthquake?
Quick Answer
A sudden seafloor movement displaces a huge volume of water, sending long waves across the ocean.
The Full Story
Most tsunamis are caused by large undersea earthquakes, especially at subduction zones where the seafloor is lifted or dropped abruptly. That vertical movement pushes water upward and creates waves that can travel at jet-like speeds in the open ocean. In deep water, tsunami waves may be only a small height apart, but they grow dramatically as they approach shallow coasts. The 2004 Indian Ocean tsunami and the 2011 Tohoku tsunami both showed how devastating this process can be.
Key Facts
1.Tsunamis are often triggered by undersea earthquakes
2.They travel very fast in deep water
3.Wave height increases near shore
YouTube Angle
Suggested video title for this topic:
"How a hidden seafloor shove turns into a giant wave"
Was this answer helpful?
Tap a reaction — it helps us pick what to cover next.