Tsunami are a huge ocean wave that is caused by an earthquake. Most tsunamis are caused by earthquakes. An earthquake occurs when a large area of the Earth's crust suddenly moves. When this happens underwater, big gaps may appear on the ocean floor. When water moves in to fill this gap, a tsunami is born.
The most common cause of a tsunamis an earthquake, which is a sudden shifting of the earth's crust, which releases energy.
When changes happen to the seafloor like an earthquake it causes the ocean to flow away from the disturbance, creating waves.
A Tsunami occurs out in the deep ocean. The deeper the water the bigger the waves will be when they hit land.
A tsunami is so massive it is capable of wiping out a whole town and heaps of people and destroy heaps of buildings
A tsunami is a large wall of water that can destroy buildings towns and hurt people
