A tsunami or tidal wave is just like a normal wave.Tsunamis are powerful and can go up to 30 metres high.

Tsunamis are caused when an underwater earthquake happens. Two tectonic plates are pushed together and it causes the ground to rumble. A volcanic eruption can also cause a tsunami. In fact, any movement in the earth’s crust can cause a tsunami.

When a tsunami happens, part of the ocean’s water pushes up and part of it goes down to make a bigger wave.

A landscape after a tsunami is very bad. Everything is all dull and colours are ruined. Even the water in a swimming pool is polluted! The water in a swimming pool looks like a river!

Remember tsunamis are dangerous, so make sure you check for any updates about tsunamis!