WILD EARTH Most of the time and in most places in the world Earth is quite safe Natural Now and then however Earth disasters are turns wild A volcano erupts destructive An earthquake splits open the land events caused A flood covers fields and villages by forces of in raging water Hurricanes blow nature and down trees and homes I not by
687 Floods sanitationers real nai Amy Kl can destroy houses making people homeless Natural disasters affect thousands of people every year They cause injury and death They destroy homes and buildings We should never underestimate the power of nature THINK ABOUT IT Look for patterns in the natural disasters you read about in this book People have found ways to limit the damage such disasters cause Why then do natural disasters continue to happen year after
T VOLCANOES A volcanic eruption happens when fountains of hot melted rock called lava spurt out of a hole in Earth's surface When big volcanoes explode they shoot out broken rocks along with lava The rocks fall to the land and smoke makes the air black Before lava escapes from the volcano it is known as
The cone shape of a volcano is made up of layers of old lava from earlier eruptions The surface of Earth is a thin layer of hard rock called the crust Below THINKABOUT IT it is hot liquid rock called magma What do you A volcanic eruption begins when think the effect is magma rises up through the crust when volcanoes As it rises the hot rock melts cause eruptions anything in its way making a tunnel under the sea How do you think to the surface Then the volcano volcanic islands erupts Volcanic eruptions can be are created very destructive But they can also create new
