Geophysics

Geophysics is the field of geology that uses physics to understand what’s happening inside the Earth — from how seismic waves move during earthquakes to how gravity, magnetism, heat and electrical signals reveal hidden structures beneath our feet. Geophysicists study everything from the deep interior of the planet to shallow subsurface layers used in engineering, mining and environmental work. With methods like seismic surveys, magnetic mapping, ground-penetrating radar and resistivity testing, geophysics helps locate natural resources, assess hazards and build safer infrastructure. In this category you’ll find clear, practical explanations of how these tools work and why geophysics is essential for understanding the physical behavior of our planet.