A tsunami is a huge wave caused by underwater earthquakes that can grow to 30 meters tall and destroy entire cities. Tsunamis are very dangerous and destructive natural disasters that are difficult to protect against due to their massive size and power. Some protective measures like gates that close after earthquakes in Japan provide some defense, but larger tsunamis can still overwhelm these defenses.

1. THE TSUNAMIS
THE GREAT WAVE BY KANAGAWA PUBLISHED IN 1830

2. WHAT IS IT ?
●
A tsunami is a huge wave with an extreme height which
has enough power to destroy a whole city. These waves
are exceptionnal, very impressive and very dangerous.

3. HOW DOES IT APPEAR ?
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A tsunami is mainly caused by an underwater earthquake
which will create small, but very fast waves. While
approaching the coast, the depth of the water will decrease
fast. That will cause the waves to slow down and grow to an
height which can reach 30 meters.

4. ITS EFFECTS
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A tsunami has an enormous destructive power. They are
the cause of many disasters, like in Japan in 2011.

5. ●
Here is a before /after picture for you to understand its
effects.

6. WHAT DO WE THINK
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We think that the tsunamis are one of the most dangerous
natural disasters because it is hard to be protected from
them. They are very destructive and fascinating.

7. HOW TO BE PROTECTED ?
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In Japan,in the port of Nomazu, there is a 9,3 meters gate
which closes if it detects an earthquake. This device can
be very effective, but it can't protect from a giant tsunami.