20 Questions
What type of eruption is characterized by a large solid plug that shoots out to begin the eruption?
Vulcanian
Which eruption type is associated with sustained eruptive columns reaching heights of over 45 km?
Plinian
What is the key characteristic of extinct volcanoes?
Scientists predict they will never erupt again
Which volcano has been continuously erupting since July of 1774?
Yasur volcano
What is the most dangerous aspect of Pelean eruptions?
Material quickly falling and flowing down the side of the volcano
Which eruption type is characterized by magma reaching heights between 1-10 km?
Vulcanian
What differentiates an active volcano from a dormant one?
Currently erupting or will erupt soon vs. has erupted in the past but not soon
What was the name given to a type of eruption on the island of Vulcano, known for its moderate strength?
Vulcanian
What event led to the burial of the towns of Pompeii and Herculaneum by an eruption?
A Plinian eruption
What categorization do scientists give to a volcano that has erupted in recorded history but is not expected to erupt soon?
Dormant
What distinguishes Pelean eruptions from other types of volcanic eruptions?
They involve a large amount of gas, dust, ash, and lava blown out from a central crater.
What is the defining feature of Vulcanian eruptions based on the text?
Having a large solid plug that shoots out to begin the eruption
Why are Plinian eruptions sometimes referred to as Vesuvian eruptions?
After the detailed account written by Pliny the Younger
How are active, dormant, and extinct volcanoes classified?
By whether they are currently erupting, have erupted in history, or are unlikely to erupt again
What differentiates dormant volcanoes from extinct ones?
Dormant volcanoes have erupted in recorded history, while extinct ones have not
Why is predicting when a volcano will erupt considered challenging?
Because there is unpredictability in the timing of volcanic eruptions
What process can make an extinct volcano active again?
'Rejuvenation,' where the volcano becomes active once more
What feature characterizes Vulcanian eruptions at the start of the eruption?
A solid plug often falling as large blocks back to the ground
What characteristic do Plinian eruptions share with Vesuvian eruptions?
The association with high death tolls and destruction
What is considered a significant challenge in classifying volcanoes into active, dormant, or extinct categories?
The constant changes in volcanic behavior and predicted activity over time
Test your knowledge on volcanic eruptions, including the characteristics of initial and effusive eruptions, associated materials, and their impact. Learn about the eruption of Mount Nyiragongo in 2021.
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