Here's why:
* Geology is the study of the Earth, including its composition, structure, processes, and history. This encompasses understanding the forces that create these hazards.
* Volcanoes are formed by the eruption of molten rock (magma) from the Earth's interior.
* Earthquakes are caused by the movement of tectonic plates, which are the giant pieces of the Earth's crust.
Geologists specialize in different areas related to these hazards, including:
* Volcanologists: Focus on the study of volcanoes, their eruptions, and their impact.
* Seismologists: Study earthquakes, their causes, and their effects.
* Geophysicists: Use physics to understand the Earth's interior and its processes, including the formation of volcanoes and earthquakes.
While other scientists, such as meteorologists (study weather) and oceanographers (study the ocean), may also contribute to understanding the impacts of these hazards, geologists are the primary experts in their origin and prediction.