What does geophysics mean?
Geophysics is the branch of physics that studies the physical nature of the Earth. It applies principles from mechanics, electricity, magnetism, heat, gravity, and wave propagation to questions about the planet’s structure, composition, and behavior. Geophysicists may study earthquakes, volcanoes, the Earth's rotation and gravity, the atmosphere and oceans, or the materials beneath the surface. They often work with instruments that measure seismic waves, electrical resistance, magnetic fields, gravity, and temperature. The field is especially important in mineral and oil exploration, hazard assessment, engineering geology, climate research, and the study of the Earth's deep interior. The word combines the Greek-derived element meaning “earth” with physics, reflecting the discipline’s position at the intersection of earth science and physical science. Although the field is sometimes used informally as a synonym for “geophysical science,” it more precisely refers to the study of the Earth through physical methods.
nounThe branch of physics concerned with the Earth, including its physical properties, internal structure, processes, and the use of physical measurements to investigate them.
- The branch of physics concerned with the physical properties, structure, and processes of the Earth.
"The team used geophysics to map subsurface structures before drilling."
"The course introduces students to the principles and methods of geophysics."
"Oil exploration relies heavily on geophysical surveys to identify promising subsurface formations."
Usually treated as a singular or mass noun. The plural form is also geophysics when referring collectively to distinct geophysical bodies, fields, or areas of study.
"Several geophysics programs offer training in seismic analysis."
Geophysics reveals the invisible: by listening to seismic waves, scientists can infer what lies deep beneath the ground.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does geophysics come from?
Geophysics is an English compound formed from the Greek-derived prefix geo-, meaning “earth,” and physics, a term ultimately based on Greek physis, meaning “nature.” The combination expresses the application of physical principles to the study of the Earth. Its development belongs to the history of modern physics and earth science, in which increasingly precise measurements made the planet’s hidden structure and processes observable. The element geo- also appears in related English words such as geography, geology, geometry, and geode.
Related word forms
How geophysics is actually used
Geophysics is primarily formal and academic. It is common in university departments, geological surveys, resource exploration, seismology, and related technical industries.
Easily confused with geophysics
Geophysics applies physical principles and measurements to investigate the Earth, while geology focuses more broadly on Earth materials, history, and processes.