Geomagnetism is the branch of geophysics that studies the Earth’s magnetic field, its origins, and its variations over time. This field is primarily generated by the geodynamo process—the movement of molten iron in the Earth's outer core. Geomagnetism is essential for life on Earth because it acts as a protective shield against solar radiation and high-energy particles. It is also a fundamental tool for navigation, as it allows compasses to function and helps scientists understand the Earth's internal structure and historical changes in the planet's crust.
- Enseignant: Hadjer HAMDI