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Geophysics Meaning and Definition in Dictionary

Definitions from Wordnet 2.0

  • geology that uses physical principles to study properties of the earth

Definitions from Wiktionary

  • geology that uses physical principles to study properties of the earth

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Geophysics Meaning and Definition in Wikipedia

Geophysics (/dʒiːoʊfɪzɪks/) is the physics of the Earth and its environment in space. It is also the study of the Earth by measuring things and collecting data. Sometimes geophysics means only studying the geology of the earth such as its shape, gravitational and magnetic field, internal structure and composition. It is can also mean how those create plate tectonics, magmas, volcanism and rock formation.

Some geophysicists now also study the hydrological cycle including snow and ice. They study how the oceans and the atmosphere move. They study electricity and magnetism in the atmosphere, ionosphere, and magnetosphere. How the earth and sun affect each other is also part of geophysics.

Geophysics was only recognized as a special area of study in the 19th century. But, there were geophysicists in ancient history. The first magnetic compasses were made in the fourth century BC and the first seismoscope was built in 132 BC. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox. Instruments were developed to measure the Earth's shape, density and gravity field, as well as parts of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean.

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