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An undersea earthquake displaces a vast amount of water in a sudden jolt. Huge shallow waves rush through the ocean at great speed. On reaching a gently sloping coastline the waves slow and compress upwards. Waves surge ashore to cause devastation well beyond the beach.

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14y ago
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13y ago

Think of it almost like a snowball that grows as it collects more snow as it rolls down a hill.

A tsunami occurs typically because of a sudden displacement of water. As the displacement travels, more water is displaced until it finally reaches the shallows where it becomes visable.

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14y ago

A surfer's wave hits the beach and goes back, a tsunami keeps going inland because the sea level behind it is higher.

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11y ago

It doesn't get big when it hits land it gets big before it hits land.

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13y ago

The Tsunami waves come from very strong winds!

hope i helped :D

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Q: How come tsunami becomes larger sa it reaches the shore?
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Related questions

What happens to a tsunami as it nears the shore?

It becomes bigger :)


Does a tsunami lose power?

no, a tsunami slows down when approaching the shore. But it gains height and actually stored its power until it reaches land.


Seismic sea wave becomes more dangerous as it gets closer to shore and can be very destructive?

Tsunami


Seismic sea waves becomes more dangerous as they get closer to shore and can be very destructive?

Its is called a Tsunami.


How could the coastal fishermen be saved during tsunami?

Coastal fishermen could be saved from a tsunami by taking their boats out to sea. A tsunami does not become particularly tall until lit reaches the shallow water near shore.


Will the water along a shoreline flow towards the sea just before a tsunami crashes on shore?

As a tsunami approaches the shore line the huge wave sucks the water in front of it out to sea towards the tsunami helping build the wave even larger as it gets to the shore. There are pictures showing the ocean bed almost completely without water just before the tsunami hits.


Can a tsunami bring sharks on shore?

Yes. All manners of marine animals can be brought on shore by a tsunami. Note, though that a shark brought on shore by a tsunami would be stressed enough that it would not be interested in eating.


Is a tsunami highest when its in the middle of the ocean?

No. A tsunami is highest in the shallow water near shore.


What happens to a shore when a tsunami hits?

It disappears until the tsunami dies away. I don't know what happens to a tsunami but this is what I think.


Are you safer in the middle of the ocean or on the shore during a tsunami?

You are safer in the middle of the ocean, where a tsunamis is barely even noticeable. It only becomes dangerous when it enters shallow water.


What can cause tsunamis so much damage when they reach the shore?

tsunami are at its most deadly when it reaches shore because it has collected enough water to destroy anything in its path tsunami's are ancient strong and wild and at its core its pretty much all about destruction it can kill people destroy homes, cars , and many other things the thing is though i never have experienced one. and i hope not to


How does the speed of the tsunami wave change as it approaches the shore?

The wave would slow down as it approaches the shore.