The Awesome Power of Volcanoes and Earthquakes Author: Helen Sillett The red-hot rock in this picture comes from a volcano. Volcanoes and earthquakes can be very powerful, and very dangerous. In this book you'll learn about four giant volcanoes and earthquakes. In 1906, an earthquake and fire destroyed most of the city of San Francisco. In 1883, a volcano blew up a whole island. In 1991, a group of scientists risked their lives to study the hot clouds of wind that poured out of a volcano. In 2004, an earthquake caused giant ocean waves that killed thousands of people.
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