Which of the following are the most common geological threats to Mexico?

• A. Volcanoes and earthquakes
• B. Hurricanes and droughts
• C. Tornadoes and blizzards
• D. Tsunamis and floods

Answer: (A)

Geological threats come from processes inside the Earth, and Mexico’s position along active plate boundaries makes earthquakes and volcanic eruptions the most common hazards. The Pacific and Cocos plates interact with the North American Plate along the western side of Mexico, creating frequent shaking and many active volcanoes such as Popocatépetl and Colima. This tectonic activity is what people most need to plan for in terms of geological risk.

Hurricanes and droughts are weather- and climate-driven events, not geological ones, so they aren’t the primary geological threats. Tornadoes and blizzards are not typical hazards across most of Mexico, and floods are hydrological events rather than rooted in the Earth’s interior. Tsunamis can occur when large earthquakes happen, but the steady and widespread geological hazards in Mexico are earthquakes and volcanic eruptions.