Geophysics is the study of the Earth by quantitative physical methods, especially by seismic reflection and refraction, gravity, magnetic, electrical, electromagnetic, and radioactivity methods.
Geophysics is the scientific study of the physical characteristics and properties of the solid Earth, its air and waters, and its relationship to space phenomena.
Geophysics is the branch of geology in which the principles and practices of physics are used to study the planet Earth and its environment, such as earth, air, and (by extension) space. It is also the science that deals with the weather, winds, tides, earthquakes, etc. and their effects on the planet.
Geophysics includes the soils, sediments, and rock layers of the planet's crust, both continental and beneath the ocean floors.
The meaning of the word geophysics is undergoing changes. The classical methods of geophysics are being applied to the planets now that we can reach them.
Seismological techniques are being used to study the interior of the moon, and magnetic field measurements are important probes for the planets.
The name will not change. However, because it is a most encompassing science, ranging from petroleum exploration on the Earth to the understanding of the most distant planets.