Extreme Earthquakes and Tsunamis

Extreme Earthquakes and Tsunamis — page 3
Earthquakes Earthquakes are a violent shaking of the ground They are set off by a sudden snapping or shifting of the giant slabs of rock that make up the Earth’s surface Most are so faint that they are only detectable by the most sensitive equipment But a few are so powerful they can cause devastation destroying cities and killing many people 6