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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.
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.
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.
Undersea earthquakes cause tsunamis because the ocean floor is moving which causes an extremly long wave yhat can travel across the ocean.
Tsunamis are caused when the seafloor has an Earthquake, it pushes the water up and forms a big wave (a tsunami).
because of the vibration coming from the earthquake "awakes" the ocean causing huge waves known as tsunamis
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Did the 1906 earthquake cause a tsunami if yes where?
No, the San Francisco earthquake of 1906 did not cause a tsunami.
What was the cause of the Japanese tsunami in 2011?
An earthquake caused the tsunami!
What event happens underwater to cause tsunami?
Earthquake
What event happens underwater to a cause a tsunami?
Earthquake
Which of the following could cause a Tsunami?
A earthquake on a sea floor
Did the 1906 earthquake cause a tsunami if yes where?
No, the San Francisco earthquake of 1906 did not cause a tsunami.
What was the cause of the Japanese tsunami in 2011?
An earthquake caused the tsunami!
Did the earthquake in japan occur at the same time as the tsunami?
No, the earthquake in the ocean cause the water to make the tsunami
Why tsunami happened in Japan?
The tsunami in Japan occurred because when the tectonic plates under ground move they cause an earthquake. Sometimes an earthquake can cause a tsunami from shaking underwater.
Did Tohoku earthquake cause tsunami?
yes!
Did the 1985 earthquake in Mexico cause a tsunami?
No.
Can an earthquake with a low magnitude cause a tsunami?
No
Did the Haitian earthquake cause a tsunami?
yes
What caused the earthquake that resulted in the tsunami of 2004?
The cause of the earthquake was that the boundaries were sliding past each other and caused an earthquake in which resulted in a tsunami.
How are volcanoes earthquakes and tsunamis related?
A volcanic eruption can cause an earthquake and an earthquake underwater can cause a tsunami.
What event happens underwater to cause tsunami?
Earthquake
What was the cause of tyhe 2004 tsunami?
Underwater earthquake
