How does an earthquake cause a tsunami?

Answer 1

The most common underwater causes of tsunami are earthquakes and volcanoes. The event causes a large column of water to be displaced and moved out from the source. See the related question about the causes of tsunami for more detail about this question and about other causes of tsunami that may not start underwater.

Answer 2

If there is an Earth quake under the bed of the ocean and as a result the bottom is lifted upwards, then all of a sudden there is a whole heap of water being pushed upwards as well. If this happen on land the land would become higher and stay there, however when it happens to water it forms a wave as the surface of the ocean levels out again, this wave can have an enormous amount of water and force behind it depending on how much the seabed has lifted and can be bad news for any one on shore in its path.

Answer 3

When an earthquake occurs underwater, it can cause the seafloor to move abruptly, displacing a significant amount of water. This displacement generates a series of powerful waves, known as a tsunami, that can travel across the ocean at high speeds and eventually reach coastal areas, causing devastating flooding and destruction.

Answer 4

Undersea earthquakes cause tsunamis because the ocean floor is moving which causes an extremly long wave yhat can travel across the ocean.

Answer 5

Tsunamis are caused when the seafloor has an Earthquake, it pushes the water up and forms a big wave (a tsunami).

Answer 6

They don't, earthquakes can cause tsunamis

Answer 7

because of the vibration coming from the earthquake "awakes" the ocean causing huge waves known as tsunamis

Answer 8

tectonics plates