While the Earth's surface may seem stationary and rock-steady it is always in motion. Scientists have studied earthquakes, volcanoes and other seismic activity and have evolved theories that explain the movement and deformation of the Earth's crust over millions of years. Includes suggestions for careers in this field of study.
Terms Covered In This Edition Include:
Crust, Cushion Lava, Deformation, Dormant, Dynamo, Fault Lines, Latitude, Molten, Pressure, Radius, Seismic, Silicates, Stratified, Tectonics
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