Why does a tsunami follow an earthquake?

Answer 1

Why does a tsunami follow an earthquake? I think , because................ Because when earthquakes form they push tectonic plates and its causes tsunami! The more its pushes the more tsunami it causes!! If the earthquake originates under the sea it causes shock waves that create the tsunami

Answer 2

An earthquake may violently disturb the the ocean floor, forcing the deeper water upward and creating enormous waves near the surface. These waves are similar, although many thousands of times larger, than the waves caused by dropping a stone into the water. While most tsunamis are caused by powerful undersea earthquakes, an undersea landslide or volcanic eruption, or an asteroid crashing into the ocean, can also start a tsunami, but these events are less frequent than undersea earthquakes.

Answer 3

The Earth is mostly solid and made up of layers. However the land is always moving and changing due to the lithosphere (the plate tectonics) layer directly under the crust. When two of the plates come together in the ocean it is called a divergence. This divergence creates a subduction zone (one plate going under the other) which in turn creates a small dip in the floor of the ocean (called a trench.) These trenches that are created cause water to collect and fill the new area causing a overabundance of water. The bulge creates a ripple which moves away from the origin point and towards a shore. When the wave continues towards the shore it eventually will begin to feel friction from the shallowing of the ocean floor. This friction causes the wave to shorten which forces the energy and water vertically. As a result these waves pull (or oscillate) the water from the shores to get the proper height to displace the energy, allowing the once small (1 meter tall) bulge to become 10's and 10's of meters tall.

Answer 4

There are tow possible causes. The most common only occurs with a specific kind of earthquake where one tectonic plate is sliding under another. The earthquake occurs when after the upper plate slips to release built-up tension. When this happens a portion of the plate is thrust upwards, displacing an enormous volume of water, generating a tsunami.

A second possibility is that the earthquake can cause a large landslide that occurs either in the water or falls into it. This also displace a large volume of water. In fact these tsunamis can be even bigger than those cause by the process above.

Answer 5

First it depends if it's a larger earthquake, then it's more possible. Also it's because the earth is shaking so the ocean is shaking the water and makes a tsunami.

Answer 6

Because after the earthquake, one of the fault lines of the ocean rise and created two tsunamis one hited Japan and the other hited Hawaii

Answer 7

its followed by because when the ground shake of a underwater earthquake then all the waters start to move really fast and make a tsunami