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Geophysics is an important field that combines the sciences of geology and physics. Geology is the study of the history and composition of the earth as recorded by rock formations and fossils. Physics deals with all forms of energy, the properties of matter, and the relationship between energy and matter. The geophysicist is an "earth physicist," one who works with the physical aspects of the earth from its inner core to outer space.

This alliance between the earth and physical sciences is part of the progress that science has made in searching for new understandings of the world. Like the fields of biochemistry, biomathematics, space medicine, and nuclear physics, geophysics combines the knowledge of two disciplines. However, the importance of geophysics goes well beyond abstract theory. Geophysicists apply their knowledge to such practical problems as predicting earthquakes, locating raw materials and sources of power, and evaluating sites for power plants.

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