Name: Yuval Navarro. Class: Seven grade. Teacher: Alla Solvio.

Tsunami is a series of water waves caused by the displacement of a large volume of a body water, typically an ocean or large lake.

1.Drawing of tectonic plate boundary before earthquake. 2. Overriding plate bulges under strain, causing tectonic uplift. 3.Plate slips, causing subsidence and releasing energy into water. 4.The energy released produces tsunami waves.

The Tsunami detector costs 250 thousand dollars and the annual holding costs about 50 thousand dollars. In the past there was a plan to place 2-3 such instruments in the Indian ocean, one of them was to be located near Indonesia.