what are 3 facts about tsunamis?

Question

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Answer 1

• A tsunami is a series of great sea waves caused by an underwater earthquake, landslide, or volcanic eruption. More rarely, a tsunami can be generated by a giant meteor impact with the ocean.

• Tsunami (pronounced soo-NAH-mee) is a Japanese word. Tsunamis are fairly common in Japan and many thousands of Japanese have been killed by them in recent centuries.

• A tsunami is not a single wave but a series of waves, also known as a wave train. The first wave in a tsunami is not necessarily the most destructive. Tsunamis are not tidal waves.

• Tsunami waves can be very long (as much as 60 miles, or 100 kilometers) and be as far as one hour apart. They are able to cross entire oceans without great loss of energy.

Answer 2

A Tsunami can be generated when the plate boundaries abruptly deform and vertically displace the overlying water. Such large vertical movements of the Earth’s crust can occur at plate boundaries. Subduction earthquakes are particularly effective in generating tsunami.

Submarine landslides (which are sometimes triggered by large earthquakes) as well as collapses of volcanic edifices may also disturb the overlying water column as sediment and rocks slide downslope and are redistributed across the sea floor. Similarly, a violent submarine volcanic eruption can uplift the water column and form a tsunami.

The geological record tells us that there have been massive tsunami in Earth's past. These tsunami were so large that they caused landslides on the opposite coast triggering another massive tsunami, or "bounce back" tsunami. An example today would be a landslide equivalent to everything west of Portland, Oregon falling into the Pacific Ocean, resulting in a tsunami that would then hit the Chinese coast with enough force to erode the coast, triggering a landslide large enough to send a tsunami that would in turn inundate the U.S. West Coast and would wipe out Portland.

Answer 3

what are 3 facts about tsunamis?

1. They move the entire body of water from floor to surface
2. They move at high speed, for example 500mph
3. They have massive wave length

how dangerous can tsunamis be?
They are dangerous to anything in their way
where in the world is tsunamis mostly common?

The pacific ring the ring of fire, this is due to the techtonic instability in the region

how does tsunamis begin?
1. A shift upwards or downwards in the sea floor causing a displacement of water that then ripples out in waves (usually no higher than 10m)
2. A large body entering them water causing a displacement of water that moves as a wave (if the body is large enough this is a megatsunami)

Remember I have answered all your questions

Answer 4

earth quakes
Flooding
death tolls or property destruction

Earth quakes case water to follow as a huge wave.
That wave can be under water
and finally when it reaches shallow water that wave arises out of the ocean and drenches the shore causing property value and death.

Answer 5

you can't surf them because of their shape

they are fast at sea - 600mph

boats at sea don't notice them

they are 1ft high in the sea and only grow because a shelf slows them down and the back rushes in