First, there was an earthquake with a magnitude of 8.9 on the Ricther scale. There was also a shift underneath the water. All the water above it was disturbed. All that water formed into a wave which gradually grew bigger. When it arrived, it washed out everything in it's path.
A tsunami hit japan after the earthquake.
The Earthquake occurred before the tsunami as it is what caused the tsunami.
Friday
earthquake in ocean
The Tsunami was caused by the large earthquake that preceded it.
A huge earthquake off the coast of Japan and it's aftershocks caused the tsunami.
The 2011 Japan tsunami was caused by a powerful undersea earthquake off the coast of Japan. The earthquake triggered a massive displacement of water, leading to the tsunami that devastated coastal areas of Japan.
The 2011 Japan tsunami was triggered by a massive undersea earthquake with a magnitude of 9.0, causing a sudden uplift of the ocean floor. This abrupt movement displaced a large volume of water, resulting in the tsunami waves that devastated the coastline of Japan.
The earthquake and tsunami in Japan occurred on March 11, 2011.
Japan had Tsunami and an Earthquake Kansas had an earthquake
If you mean how then here it is because the earthquake might of happened in the sea and went to japan and then the earthquake was strong enough to make a tsunami
Just after the Earthquake.