geomagnetisms
/ˌdʒioʊˈmæɡnəˌtɪzəmz/
noun
- The natural magnetic field of the Earth, or the scientific study of it.
- Scientists measure geomagnetism to understand changes in Earth's core.
- Birds use geomagnetism to navigate during migration.
- Geomagnetism protects our planet from harmful solar radiation.