* Geosphere: The solid, non-living parts of the Earth, including the crust, mantle, and core. Earthquakes originate within the Earth's crust and upper mantle.
* Hydrosphere: All the water on Earth, including oceans, lakes, rivers, and groundwater.
* Atmosphere: The layer of gases that surrounds the Earth.
* Biosphere: All living things on Earth, including plants, animals, and microorganisms.
While earthquakes can have impacts on other spheres (like the hydrosphere through tsunamis or the biosphere through habitat destruction), their primary origin and location are within the Geosphere.
