Historic tsunami

Okay, so a tsunami is like a giant wave that can happen when there's a big earthquake under the ocean. This can make the water move in a big way, like when you jump in the pool and make a big splash.

Sometimes, these tsunamis are really big and can cause a lot of damage. People have been talking about tsunami for a very long time because they happen all over the world.

When we talk about a historic tsunami, we mean one that happened a really long time ago that people still remember or study today. Some of the most famous historic tsunamis happened in Japan and were caused by big earthquakes.

People study historic tsunamis to learn more about how the earth works and what we can do to stay safe if a big tsunami happens again.