• A. Landslide
  • B. Firestorm
  • C. Earthquake
  • D. Cross-ignition of gas and lava

💡 Need help?

This natural phenomenon often occurred prior to volcanic eruptions during that era.

✅ View the answer

The correct answer is C. Earthquake. The eruption of Mount Vesuvius in AD 79 was preceded by several earthquakes that could be seen as warning signals. Earthquakes indicate that magma is moving beneath the Earth’s surface, which can lead to a volcanic eruption.

📚 More background information

The eruption of Mount Vesuvius in AD 79 is one of the most famous volcanic eruptions in history. The city of Pompeii, located at the foot of the volcano, was buried under ash and pumice, leaving the city almost perfectly preserved until it was rediscovered in the 18th century. What many people don’t know is that the residents of Pompeii had already been warned by a series of earthquakes in the months leading up to the disaster. However, the severity of these warnings was not understood, leading to fatal consequences.

Interestingly, this tragedy has also greatly contributed to our current knowledge of volcanology and geology. The term ‘Plinian eruption,’ which refers to a type of explosive volcanic eruption, is derived from the accounts of Pliny the Younger, who meticulously described the events in letters to Tacitus, a Roman historian. His eyewitness reports have been invaluable to scientists studying eruption patterns.

Mount Vesuvius remains an active volcano and is closely monitored by modern scientists to prevent similar disasters in the future.