The Restless Earth - Layers of the Earth




By K. West

Earth is made of several layers, each with its own unique characteristics and processes that make it a vital part of the planet. The solid inner core, for example, is the farthest layer from the planet's surface, yet it provides much of the heat needed to fuel such dramatic surface phenomena as volcanoes and earthquakes. Likewise, the outer core generates a magnetic field that protects the planet from harmful particles in space. In Layers of the Earth, learn how scientists use tools such as seismology, geodesy, computer modeling, and global positioning systems to study the workings of the inner Earth.

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The Restless Earth - Layers of the Earth (10.6 Mb)